DEPARTMENT OF HEALTH AND HUMAN
SERVICES
FOOD AND DRUG ADMINISTRATION
SCIENCE BOARD MEETING
9:10 a.m.
Friday, November 16, 2001
Conference Room 1066
5630 Fishers Lane
Rockville, Maryland
PARTICIPANTS
Science
Board Members
Marion
W. Anders, D.V.M., Ph.D.
Michael
P. Doyle, Ph.D.
Owen
Fennema, Ph.D.
Robert
S. Langer, Sc.D., Chair
Robert
M. Nerem, Ph.D.
Cecil M.
Pickett, Ph.D.
Jose
Principe, Ph.D.
FDA
Participants
Norris
E. Alderson, Ph.D., Acting Senior Advisor for Science, FDA
Dennis
Baker, Associate Commissioner for Regulatory Affairs, FDA
Celeste
F. Bove, CCC-A, Acting Executive Secretary, Office of Coordination and
Communication
David W.
Feigal, Jr., M.D., M.P.H., Director, Center for Devices and Radiological Health
(CDRH)
Ajaz
Hussain, Ph.D., Deputy Director, Office of
Pharmaceutical
Science, CDER
David
Lepay, M.D., Senior Advisor for Clinical Science, FDA
Joe
Levitt, Director, Center for Food Safety and Nutrition (CFSAN)
Bernard
Schwetz, D.V.M., Ph.D., Acting Principal Deputy Commissioner, FDA
Steven
Sundlof, Director, Center for Veterinary Medicine (CVM)
Linda
Suydam, D.P.A., Senior Associate Commissioner for Communications and
Constituent Relations
Janet
Woodcock, M.D., Director, Center for Drug Evaluation and Research (CDER)
Kathryn
Zoon, Ph.D., Director, Center for Biologics
Evaluation
and Research (CBER)
Invited
Guests and Speakers
Frances
Bruttin, PrincewaterhouseCoopers, Pharmaceutical Sector Team
Alexa I.
Canady, M.D., Co-Chair, CDRH External Science Review Committee
Doug
Dean, Ph.D., PricewaterhouseCoopers, Pharmaceutical Sector Team
Steve
Hammond, Manager, Process Analytical Group, Pfizer
G.K.
Raju, Ph.D., Executive Director, MIT Pharmaceutical Manufacturing Initiative
Norman
Winskill, Ph.D., Vice President, Manufacturing, Pfizer, Inc.
Public
Comment Speakers
Robert
Chisolm, International Technology Manager,
AstraZeneca
Gideon
Kantor, Ph.D., personal statement
Nouna
Kettaneh-Wold, Umetrics
Gabi
Levin, Ph.D., Brimrose Corporation of America
Scott C.
Ratzan, M.D., M.P.H., M.A., Editor, Journal of Health Communication
Svante
Wold, Ph.D., Umetrics
AGENDA
Page
Call to Order
Robert
S. Langer, Sc.D., Chair 5
Introductory Remarks
Bernard
A. Schwetz, D.V.M., Ph.D. 7
Update on Action from April 2001 Meeting
Norris
E. Alderson, Ph.D. 22
Emerging Science Issues: Pharmaceutical Manufacturing
Janet
Woodcock, M.D. 28
Doug
Dean, Ph.D. 46
Frances
Bruttin 57
G.K.
Raju, Ph.D. 74
Norman
Winskill, Ph.D. 111
Steve
Hammond 123
Ajaz
Hussain, Ph.D. 149
Discussion
FDA
Science Board 166
Open Public Comment
Nouna
Kettaneh-Wold 194
Gideon
Kantor, Ph.D. 198
Scott C.
Ratzan, M.D., M.P.H., M.A. 205
Gabi
Levin, Ph.D. 221
Robert
Chisolm 230
Update on CDRH External Science Review
Robert
M. Nerem, Ph.D. 241
Response to Update
David W.
Feigal, Jr., M.D., M.P.H. 260
Discussion
FDA
Science Board 286
Emerging Issues in FDA's Oversight of
Clinical Research
David A.
Lepay, M.D. 298
Discussion
Science
Board 324
P R
O C E E D I N G S
CHAIRMAN
LANGER: Good morning. I would like to call the meeting to
order. My name is Bob Langer. I wanted to do two things. First, my major task is to remind all the
Board members to pay Donna $8 for lunch during the break. And, secondly, I thought we could just maybe
go around the table and introduce everyone just briefly.
DR.
PRINCIPE: My name is Jose
Principe. I am Professor of Electrical
Engineering. My expertise is biosignal
processing. I work at the University of
Florida.
DR.
PICKETT: I am Cecil Pickett. I am Executive Vice President of Research and
Development at Schering-Plough Research Institute.
DR.
FENNEMA: Owen Fennema, Emeritus
Professor of Food Chemistry, University of Wisconsin.
DR.
NEREM: Bob Nerem from Georgia Institute
of Technology. I am Professor of
Mechanical Engineering and Biomedial Engineering.
DR.
CANADY: I am Alexa Canady. I am not on the Science Board but was on the
Review Committee, Co-Chair, and I am Professor of Neurosurgery at Wayne State
University.
DR.
DOYLE: I am Mike Doyle. I am Director of the Center for Food Safety
at the University of Georgia.
DR.
ANDERS: Greg Anders, now a Professor
Emeritus of Pharmacology and Physiology at the University of Rochester.
DR.
SUYDAM: I am Linda Suydam, FDA Senior
Associate Commissioner for Communications and Constituent Relations.
DR.
SCHWETZ: Bern Schwetz, Acting
Commissioner of the FDA.
CHAIRMAN
LANGER: I am Bob Langer. I am Chair of the Science Board and a
Professor at MIT in Chemical and Biomedical Engineering.
DR. ALDERSON: I am Norris Alderson. I am the Senior Acting Director--I am Acting
Senior Advisor for Science. I'll get it
right. It's a good job.
[Laughter.]
MS.
BOVE: I am Celeste Bove. I'm the Acting Exec. Sec. in the Office of
Science.
MR.
BAKER: I am Dennis Baker. I'm the Associate Commissioner for
Regulatory Affairs.
MR.
SUNDLOF: I am Steve Sundlof. I am the Director of the Center for
Veterinary Medicine.
DR.
WOODCOCK: Janet Woodcock, Director,
Center for Drugs.
CHAIRMAN
LANGER: Okay, so now I would like to
turn this over to Bern Schwetz, who is the Acting Principal Deputy
Commissioner, to make some introductory remarks.
DR.
SCHWETZ: Thank you, Bob. I'm in the precarious spot of beginning to
talk and my notes are still in my office over in the other building, which is a
position I try not to get caught in very often.
Let me
follow up from where Norris was going with his title. When the Science Board met last time, Liz Jacobson was still with
us as the Acting Senior Advisor for Science, and in the meantime Liz has
retired, and is still helping us in some ways.
But she is no longer in the position that she was in when we met last
time, and instead Norris has agreed to come in and help in this regard.
Norris
has spent many years in the Center for Veterinary Medicine, and in his most
recent position--recent in the last 15, 16, 17 years--has been the Director of
the Office of Research within the Center for Veterinary Medicine. And in consultation with Steve, who
reluctantly agreed to let Norris out of CVM for a while, Norris agreed to come
and fill this position as the Acting Senior Advisor for Science, and I am very
happy to have Norris helping me in that regard.
There is
another change that has been made within my immediate Office of the Commissioner
that I want to update you on. Dr. Mac
Lumpkin is now serving as the Acting Deputy Commissioner of the agency. Mac was in the Center for Drugs with Janet
for many years, and more recently has served as the senior medical advisor to
me during this time when I have been the Acting Commissioner.
So we
have now given Mac a more permanent title, if you will, of the Acting Deputy
Commissioner, so I am glad to have his help.
It helps to have, when you're not a physician in charge of the agency,
it's nice to have a physician as a right-hand person helping with the
day-to-day running of the agency.
I also
want to thank our two new members of the Science Board. Dr. Cecil Pickett, as he has already
identified himself, is from Schering-Plough Research Institute, the Executive
Vice President of Discovery Research, a cell biologist by training, and was on
the Science Advisory Board of NCTR. And
I had a conversation, a couple of conversations with Dan Casciano about the
possibility of having Cecil work on the Science Board at this time, instead of
on the NCTR Science Advisory Board, and Dan agreed. So, Cecil, we're very happy to have you with us.
And Dr.
Principe is also new. We welcome both
of you to the Board. A professor of
electrical engineering, has an interest in something that is important to a lot
of us, computational neuroengineering.
That is something that a lot of us have talked about in one way or
another as it relates to drug research or a new approach for looking at the
nervous system function. That is
something that I'm hoping we will be talking about more as we go. So welcome to both of you.
I have in
my notes to talk about where we are from the standpoint of a new Commissioner,
not that I can bring you information, but in hopes that maybe you have some
information.
[Laughter.]
Because
while I don't think we're in a different position that we were several months
ago, where names were being mentioned but there isn't any specific action. So as far as I am in this position, the
agency is still stuck with me, and for how long we don't know. But at any rate, things continue as they
have been.
I want to
talk a bit about counter-terrorism and the impact of the recent two months on
the priorities and the operation and the activities of the agency. Everybody says things aren't the way they
used to be. Things haven't gone back to
normal. I can assure you that things
haven't been very normal in the agency since then. And I'm not going to go into detail on anyone of these things,
but I just want to kind of give you a flavor of the kinds of day-to-day issues
that we've had and what has been consuming our time and energies at a time when
we're trying to keep the usual business of the agency flowing.
We have
very thoroughly reviewed the emergency preparedness plans that we have within
each of the Centers, because they all have them, for dealing with emergencies
that relate to the products that are in the domain of that particular
Center. We have certainly spent a lot
of time backing up the rest of the department and the other agencies from the
standpoint of the availability of vaccines and drugs and medical devices,
because whether it was the terrorist actions in New York City or anthrax since
then, we needed to have everything from blood to skin, drugs, vaccines.
Many of
our products were out there and of concern in one way or another, so we spent a
lot of time reviewing product security, and how would we know if our products
were the subject of some terrorist action or not? To say nothing of the fact that we have an adequate supply in the
event that they are needed in case of some action. So product security has been reviewed.
Food
security has been a big issue, and a lot of us have spent time talking to the
press, talking to the public, talking to the industry, communicating about
where we are on food security as a possible means of terrorist action.
The
threat of anthrax in our mail rooms had a major impact. It's one thing to talk about having drugs
available for those other people who might be exposed to anthrax, but when we
have anthrax that supposedly--we had the presumptive positives in five of our
mail rooms. After routine sampling and
culturing, the word came back that we had presumptive positives, and then there
were many days before it was confirmed negative.
Well, in
the meantime our people, like others, were put on antibiotics, and thousands of
questions, many hours spent in front of our employees trying to provide
perspective and answer questions, and hope that we wouldn't get positive
confirmed results back, and what were we going to do in the event that they
did? So I think that was another test
of our ability to deal with an internal emergency that certainly had
ramifications on the outside, as well.
Again,
the expertise that we have that comes into play at times like this, an example
is the recent interest in the irradiation of mail as a way of getting rid of
anthrax or some other organisms through the mail. And in the Center for Devices and Radiological Health we have the
expertise to be able to help answer those questions. So our people have been in there with the Postal Service and the
others on a daily basis trying to figure out, is that an effective and safe
way, and what kind of operating conditions would you have to have? What are the capabilities? Is it just flat surface letters, or is it
boxes? How thick can something be?
Another
wrinkle to this is, if we go into the irradiation of mail aspect, what about
things, products that we regulate that are shipped in the mail? And that's everything from drugs to
biologics to devices to food, a number of other things that end up going in the
mail, that if it was irradiated, wouldn't be effective if you used it. So there are a whole bunch of other
questions.
So then
do we have to go back to the manufacturers and say, "In the event that
your product is shipped in the mail, is it stable under these
conditions?" And what do you have
to tell the consumer to worry about? So
it's amazing how many ripples come out of this kind of thing.
Some of
this has translated into a supplemental budget that we have put in, and from
the standpoint of the money that has been requested by the administration, of
that $20 billion that is earmarked so far, we have a request for $106 million. $61 million of that would be used to help
protect us against things that would be imported, so a lot of this would go to
the field.
A lot of
it has to do with food security, but Joe Levitt isn't getting it hands-on. It's really going to the field operations,
so Dennis Baker and his people are the ones who will get a lot of this to help
improve our presence at the border, as well as our presence, our capacity
behind the border for doing the laboratory work that is increased in the event
that we have activities at the border and have to do a lot of sampling. Or the domestic side of it, where in the
event that we have to do a lot of sampling because of questions that have
arisen from domestic supplies, that we need the capacity to be able to do the
lab work that this kind of increased action drives.
So that's
$61 of the $106 million, and the rest of it has to do with other parts of the
agency where we're trying to increase the stockpiles, make sure we have the
materials that are needed in the stockpiles that CDC manages and the rest of
the department manages for emergencies.
We have
spent a lot of time in the product centers--we, I mean generously, the people
who are in the product centers have spent a huge amount of time communicating
with the manufacturers to be sure that products that are critical are in fact
not only available but in a supply that would be sufficient to meet the needs
that we might anticipate under emergency conditions, antibiotics and vaccines
in particular, and the possibility that we would develop new capacity for
producing vaccines. There have been a
lot of discussions with the industry that hasn't been manufacturing vaccines,
or at least the ones that we need for anthrax, smallpox, and so on.
So there
has been a lot of discussion, and the pressure that we get to get out there and
make it tomorrow and have it ready is one that is very difficult for us,
because the last thing we want to do is to approve a vaccine that's coming from
a new source, that isn't safe or isn't effective, and to build up hopes only to
find out that it wasn't what we thought and we may have created a worse problem
than we hoped to solve.
So at a
time when everybody wants to be protected right now and have everything in
place, we are trying to make sure that in the event that we increase the
capabilities for manufacturing or developing new products, that when they are
made available, they are safe, but do it as fast as we can so that we are not
seen as "business as usual" and there's an emergency and we stood in
the way.
We of
course have continued to raise attention to the fact that we have some
pathogens in laboratories of ours, and so does the industry that we regulate
that's developing vaccines and other products, and to get out and find out the
security of all of those pathogens that could be of interest to somebody
else. So that has been a focus of ours,
and part of this money that I'm talking about goes to increase our own internal
security.
And of
course the amount of coordination with other agencies, inside and outside the
department, has consumed hours per day of a lot of us, just talking and being
sure that we keep the Secretary informed, or other members of our department
who are out in the press informed, or to be sure that as decisions are made on
how we should deal with these kinds of issues, that the best thoughts are put
on the table to help focus the discussion and make some of these decisions.
One of
the things that we have developed internally as a result of this is what we're
referring to, and the name isn't necessarily nailed down yet, but a new Crisis
Management Center. Dr. Woodcock has
agreed to help pull this together for us, so for now, Janet is detailed to the
Office of the Commissioner and Dr. Steve Galson, who is her new deputy, is
helping to run the Center from day to day, but Janet is nearby. But Janet is helping us develop a plan to
have a Crisis Management Center.
The
agency has decades of experience in dealing with emergencies. That is one thing that has been part of our
menu all along, because we have an average of two to three tampering incidents
per week, and those tamperings might be anything from a hoax, some of them have
been real, some of them have been not only real but very serious. And the possibility now on our mind is that
you never know when a tampering--this has been true before, but especially true
now--when one of those tampering incidents might be the beginning of a
terrorist activity.
And
because we see a lot of these on a day-to-day basis and the Centers are well-prepared
to deal with food poisoning issues and other product tamperings, there is a
threshold of that at which we need to engage as a whole agency, as we have for
the anthrax, as opposed to the Center for Foods dealing with a food crisis that
they have dealt with in a normal way all along and it doesn't come to the
attention of the whole agency.
So this
management center will help to keep us communicating and help to sort out those
more routine variety of emergencies that the Centers take care of all the time,
as opposed to one that could rise to the level that the whole agency needs to
deal with it and be prepared to work with CDC and maybe the USDA and EPA and
other agencies. So we appreciate that
Janet has agreed to help bring this center to fruition.
Let me
switch gears now. We end up spending a
lot of our time talking about terrorism and preparedness for it, but I want to
talk about some other things, too.
Peer
review. The CDRH peer review has been
completed to the stage where Bob and Alexa are going to comment on the review
that has been done of CDRH. We are
happy to see that this has been a productive process, and Dr. Feigal is going
to respond to the comments that will be made.
We
continue to talk to Dennis in the Office of Regulatory Affairs, with the
expectation that a review of ORA--because of the science within the field
operation--would be the next peer review, and then CVM and CDER will follow, so
one-by-one we keep moving on this.
Just a
very small comment on budgets from the standpoint of the 2002 budget. We are under continuing resolution. Both the House and the Senate have passed
conference reports, and the agency is doing pretty well for 2002.
And we
are pleased to know that we are receiving the pay increase, the salary increases
as an item this year, as opposed to in past years having to take the required
pay increases of our employees out of our operating budget. Well, this year the operating budget is
there and, in addition, there is money for the pay increases, so that is a significant
step forward. And if we had had that
for the last five or six years, we wouldn't have been in the trouble we were
programatically.
In
addition, I mentioned the supplemental budget request of $106 million. That will help. One of the things that we realize is that while we have spent a
lot of money on the food safety initiative in the last three or four years, a
lot of the investment that we've made in food safety is very important from the
standpoint of food security, so it has been a good investment.
And it
goes the other way, as well, so that as we get money for people at the borders,
as we get more money to help with vaccines and drugs and what not, that helps,
the security money helps safety surveillance and maintenance as well. So it isn't that we are investing in
something that has a use only under those peculiar circumstances, so that's
good for us.
We're
working on the 2003 budget, but that is something that we will continue on for
the next couple of years.
As I
close, let me come back to Board members.
Two of our members are here for the last time. In fact, only one of them is here. Dr. Marian Nessle couldn't be here today, but today is her last
meeting. But in addition, Greg Anders
is here as his last meeting this time, and I very much appreciate the help that
both of you have been during this time.
Greg helped me as a member of our Science Advisory Board at NCTR for a
number of years while I was still there, and I convinced him to come and be
part of our Science Board here, as well.
So, Greg, it has been a long time that you have committed your attention
to us, and I really appreciate it, and thank you a lot.
In
addition, I would remind you that over the next year--and please don't stand up
and cheer when I say this--we do have more members whose term will be coming to
an end, so I would ask you to be thinking about other colleagues of yours whom
you would like to recommend as replacements, as we look at five new members
coming on next year. So we can deal
with that down the road, but be thinking of names.
Bob, I
think I'll turn it back to you.
CHAIRMAN
LANGER: That sounds great. Let me now turn it over to Norris Alderson
to give us an update on the action items from the April 2001 meeting. Norris?
DR.
ALDERSON: Thanks, Bob. Let me tell you that, first, I'm looking
forward to working with all of you at the coming meetings, assuming I'll be
here. That is still an unknown. But I promise that the next time we meet, I
will have the title correct.
I do want
to remind you that Dr. Schwetz mentioned the two Board members, that this would
be their last meeting, we have selected two members to replace them and I want
to tell you about those.
First is
Dr. Jim Riviere. He's from the College
of Veterinary Medicine at North Carolina State University, and he's a
veterinary pharmacologist. The second
is Dr. Josephine Grima, who is Director of Research and Legislative Affairs for
the National Marfan Foundation. Her
expertise is in biochemistry, molecular biology, and cell biology.
Another
little update is, I'm sure all of you remember Sue Bond. I'm glad to tell you that Sue and Rod Bond
are the proud parents of a baby girl born in October, and so Sue is out on
maternity leave at this time, and she will be back in February. In her absence, Celeste Bove, to my right,
has been filling in extremely well, and I'm extremely proud of the fact that
we've had the staff to fill in behind Sue.
Two other
people I do want to recognize that have helped in this, and that's Donna Mentch
and Monica Spence. And particularly
Monica today, if you've got problems with travel and things like that--I
already heard one person that needs some help--Monica can help you take care of
those problems. She will also be
dealing with you in getting your reimbursement for your expenses, so don't
forget that.
Now, an
update from the last meeting. Bern has
mentioned the peer review, so I won't mention that anymore. One other suggestion that came out of the
April meeting was that we have an Ethics Advisory Committee, and remembering
back, this came up in a discussion, I believe by Dr. Zoon, on tissue
engineering and cloning.
The
leadership council of the FDA has looked at this and decided to establish a
list of ethicists that we will maintain in the Office of Science Coordination
and Communication for our use. We
looked at that and felt this was the best way to address it. So we took your consideration and we put
something in place to have that for us when we need it.
The
second item is, if you recall last meeting, Dr. Skulnick made some comments
regarding institutionalizing our peer review system. Since he is not here today, we'd like to hold off on discussing
that because I think he has a big interest in that, so we will bring that up at
future meetings.
I do want
to bring your attention to the upcoming FDA achievement awards. If you will recall, that's a process that
you are the final determining body on who gets those awards. Our in-house review committee has completed
their review of these. We will be forwarding
to you in the next two weeks two candidates for each of the categories, and
you'll get the opportunity to vote, I hope by December the 7th, on your
recommendations for each of those awards.
These
awards will be presented at our Science Board in February. So this is very key to us. We've got a lot of good scientists in the
agency. This is one way we are able to
recognize those, and we think it's very important to them.
One final
point. We communicated to all of you
this summer about coming in early for one of the meetings to visit our
laboratories. I think all of you
responded to that in an affirmative way.
You've told us before that you wanted to hear more about how we
establish priorities for our research, and this is one way we can start that
discussion with you, is with you going out to our laboratories and really
talking to the scientists and the managers there to address this issue.
So this
will require you to come in a little earlier.
We would like to do this the afternoon before this meeting. So at the same time we've had to change the
date of our April meeting because of a conflict with the Food and Drug Law
Institute meeting. So we want you to respond
back to us as soon as possible about your available dates, April and May time frame. If we don't hear from you shortly, we will
take the initiative to get back to you.
So that's
my comments, Bob.
CHAIRMAN
LANGER: That's terrific, and very
concise. That's very helpful. Thanks a lot.
Well, I
think we've got a very exciting morning ahead of us, and the issue that we're
going to discuss is the emerging science issue of pharmaceutical manufacturing,
and Janet Woodcock is going to lead that discussion. I'll really turn this over to her. Janet?
DR.
WOODCOCK: Thank you. Good morning, everyone. If I can get the shift P--shift key? All right.
Now, what else do you want me to do?
You'll do it? All right.
While
we're getting our audiovisual stuff working, what I want to talk about today,
and the program we have put on, relates to science issues in the regulation of
pharmaceutical quality. Now,
pharmaceutical quality we think is really--it's the roots of drug regulation
for the FDA. It was quality problems
that, in the early part of the 20th century, that really led to the formation
of the Pure Food and Drug Act, the Food, Drug and Cosmetic Act.
CHAIRMAN
LANGER: Janet, microphone.
DR.
WOODCOCK: Oh, microphone, sorry. Okay.
That led to the formation of the FD&C Act eventually. There were improper constituents, there were
impurities based on manufacturing and so forth that led to various tragedies.
Since
that time, drug quality is really felt to be the basis of our findings of
safety and effectiveness, because if the quality of the product fluctuates, the
findings from the clinical trials of safety and effectiveness can't be relied
upon to project into what the drug actually is. So this is a fundamental issue for the FDA, but we feel that is
currently being challenged, and let me explain how.
How do we
regulate drug quality right now? Well,
I'm going to go over this a little bit because some of you may not really be
aware of this. The pharmaceutical
industry manufacturing sector is extremely tightly regulated by the FDA. That's the first fact.
As most
of you may know, before a product is approved by the FDA, before a drug product
is approved, there has to be pre-review and approval of both the process, the
synthesis, the manufacturing process and so forth, all the documentation that
has been assembled by the firm, and aspects of the facility submitted. All of that is reviewed in a prior approval
way before a new drug would get onto the market.
In
addition, the facility is inspected by FDA inspectors and everything is gone
through extremely carefully there. And
once a drug is on the market, if there are changes to the product or the
process, these usually have to be submitted to the FDA and reviewed prior to
being instituted.
And in
addition the ongoing manufacturing facility is subject to FDA inspection and
has to conform to standards called Good Manufacturing Practices. And according to the statutory framework,
that is supposed to be done at least every two years, so every firm should be
inspected by the FDA every two years.
So this
scheme, which has been in effect for many decades, is how a pharmaceutical
quality is currently regulated by the FDA in the United States. Now, we think, one of the reasons we are
coming here today is that we think there are some issues regarding this.
The goal
of regulating pharmaceutical quality this tightly is that the product be of the
highest possible quality. In other
words, that's why we do this regulation, to ensure the highest possible quality
of the pharmaceutical products that are regulated, but we feel that we may not
be totally achieving this goal in some ways.
We are
seeing at FDA an increasing trend toward manufacturing-related problems. These include things like recalls. When there are manufacturing problems, it
may disrupt manufacturing operations, and we may see shortages or loss of
availability of important drugs. And
this also can have, manufacturing problems or issues can have a negative impact
on getting new drug approvals out.
So that
is one issue. Although we think the
products now are of high quality, we will have some presentations today that
discuss the fact that the pharmaceutical manufacturing sector may have low
manufacturing and quality assurance process efficiency. And this is an issue because the cost of
drugs is a real issue for health care in the United States, and this
contributes, a lack of efficiency in this sector contributes to the cost.
Now, not
a lot of people have talked about this.
I don't think it's a real popular subject. So I think this may be a somewhat controversial set of
presentations that you're going to hear this morning.
And, in
addition, we find, we feel that innovation, modernization, and adoption of new
technology in this sector has been slowed.
And what do we base that assertion on?
Well, we know that in other countries where products are manufactured
not for the U.S. market, there has been a more rapid introduction and adoption
of new technologies of various kinds.
And that might be for the same product that is actually manufactured for
U.S. use where those technologies are not employed. And these technologies we're talking about usually lead to a
better level of quality assurance.
Now, the
final issue for us in the current system of how we regulate pharmaceutical
quality is, it really does place a high burden on FDA resources. Our regulation of pharmaceutical quality is
resource-intensive for the FDA.
We get
about 4,000 supplements submitted yearly.
These are what I talked about earlier.
When a change is going to be made in the manufacturing process or in the
product in some way, a supplement must be submitted to the FDA. Some of these have to be reviewed by
us. Some of them are simply noted by
us.
Our FDA
inspectors are unable to meet, currently, the biennial GMP inspection
requirement, so we are not in the plants every two years, as Dennis very well
knows. And unfortunately for the
non-domestic industry--and globalization is causing a major shift, especially
in the bulk drug manufacture, to overseas facilities all around the world--our
presence is even less there.
And some
of the cause of this is the financial issues that I think Bern and others have
introduced the Board to, some of the financial challenges that the FDA
faces. However, nevertheless, whatever
the cause, the bottom line is, we are not in the foreign plants even as often
as we are in the U.S. plants, which is much less often than we are required to
be under the statute.
This
graph just shows, from the previous 10 years, sort of the rate of increase of
us getting these manufacturing supplements.
You can see as we approve new drugs, very frequently they go through a
lot of changes in the next few years.
Especially with current drug development, where things may not be
completely worked out or optimized at the time the drug goes on the market,
we're seeing a lot of supplements filed, and I think this reflects that. It also reflects the success of our generics
program. We're getting a lot of generic
drugs on the market, and they have a lot of manufacturing supplements filed to
them.
Now, due
to the efforts of our chemists in developing new guidance, many of these in
recent years have changed from requiring pre-approval, where the firms have to
wait when they submit these until they're approved by the FDA, they have
changed to what we call changes being effected, where they simply can notify
us. They simply can send in the
supplement, notify us, and go ahead and implement the change. But nevertheless you can see this is an
increasing burden for the FDA at a time we don't have additional resources to deal
with this.
Now, how
did this system--how did we get here?
Well, this whole system evolved starting about 30 to 40 years ago, at a
time when the sectors of industry, many of them, by no means universal, but
there were parts of industry that really lacked rigorous manufacturing
procedures, so it was totally appropriate, the changes in regulation that were
implemented at the time.
But more
importantly than lacking SOPs, there was really--at that time the science had
not advanced to the point where there was some predictability in what factors
affect a formulation's performance, if you follow me. So it was really what I call sort of a "know nothing"
approach. We know nothing about what
impact a change will have on a formulation.
Therefore, we must control and check everything, because we cannot
predict, we cannot model what's going to happen if we make a change.
And
subsequent to that, the science and technology base--and again, this is going
to be controversial--it hasn't evolved as quickly as in other manufacturing
sectors, and there are probably a number of reasons for that, which I'll go
into a little bit.
Now, the
standards that I referred to earlier, the Good Manufacturing Practice
standards, which are the standards that we impose for inspecting plants,
process standards for manufacturing facilities, these are empirical
standards. They are not scientifically
based standards. And the reason for
that, again, is that we didn't have the underlying science to be able to
predict what factors were important.
Now, over
the last 10 years, the Center for Drugs and the Center for Biologics have
worked on the International Conference on Harmonization, which is a sort of
international standards harmonization setting body that developed
consensus-based standards in a number of quality areas. And most of these had to do with the review
aspects, what we review in terms of stability, how you test for stability and
things like that. So some of those may
have a more modern science base to them, but nevertheless they were primarily
consensus-based, based on the experience and standards of the three regulatory
agencies, Japan, EU, and U.S., that actually were putting these standards
together.
And
finally, I have to mention this because I think it's a very strong factor, why
has the science base and technology base--and I see people nodding in the
audience--not evolved rapidly like it has in other sectors, aerospace or, I
don't know, computer chips or what have you?
Well, for
the innovative pharmaceutical industry, the most important thing is to get the
products on the market rapidly, and we all know that. Manufacturing is really an impediment, in a way, something that
shouldn't get in the way of that happening.
And so
the industry, in the face of this intense regulation, I think has been very
risk-averse in introducing new technologies or in challenging the FDA
standards, because the bottom line was to get the product on the market or keep
the product on the market. And this has
sort of played into, I think, the issues around adoption of new technologies.
Now,
where are we now? That's how we got
here. Where are we now? Well, you know, the drug discovery
revolution, which I'm sure you all have talked about quite a bit, has really
increased the early pipeline, and there's really not that many barriers to
developing candidates, molecular candidates, so there's a push at the very
early part of the pipeline.
There are
a lot of ongoing efforts in companies to improve how drugs are developed, the
pre-clinical to early clinical paradigm, to move that along quickly. What we are seeing, I think, is that as the
clinical drug development time shortens, as there is an emphasis on speed,
there is less and less attention paid during the clinical drug development
phase to formulation development, manufacturing process development.
Now, all
of this we think is feeding into some of the issues I talked about earlier,
some of the problems that we're seeing, so that we feel it's probably unlikely
that the innovator industry will slow down drug development in order to get
their formulations finished, and so forth, and perfect. So what we really think is needed is some
innovation in manufacturing process R&D, introduction of new technologies,
so when these products come onto the market, we can all have confidence that
they will perform reliably, and that innovation can continue to be incorporated
into the manufacturing sector.
Now, the
challenges for FDA in this regard are--and this is our challenge
everywhere. It's our challenge in the
clinical area and everywhere, in regulating an innovative industry. It's how do we encourage innovation while
ensuring that the quality is maintained.
That's one of our big issues.
We know,
or we certainly all hypothesize, I think, that successful adoption of new
technologies will actually improve overall quality of pharmaceuticals, and also
probably efficiency, and you'll hear about this in the presentations. But how do we do that? How do we enable the introduction of new
technologies while maintaining the quality standards? And this is the essential issue that we're dealing with.
In
particular, in this case, how do we successfully shift from empirical, the art
of manufacture based standards, to science-based standards for manufacturing
process quality? How are we going to do
that? It's a huge challenge.
In
addition, we need to try to further decrease reliance on pre-approval review
and on the physical, actually getting in there and touching the product and the
lines and so forth, not because that's a bad model, but in fact we don't have
the resources to do it, and that has been clearly demonstrated over the last
decade. We are not getting in there all
the time. So what other ways can we use
to evaluate quality? And, finally, how
to recruit and train a scientific work force that would be proficient in the
application of these new technologies.
Now,
today's approach, what we're going to do, we're going to present the problem to
you from a variety of perspectives and go into much more detail, and we're
going to use Process Analytical Technology as an example of new
technology. By no means are we saying
that this is the only new kind of technology that needs to be introduced, but
we felt that we needed some firm example that people could look at to see what
we were talking about, and so we'll be using some process analysis technologies
as an example of the kind of new technologies that could be helpful.
Our
speakers, we're first going to have Doug Dean and Frances Bruttin from
PricewaterhouseCoopers talk about it.
Then we're going to have G.K. Raju, who is from academia at MIT, their
Pharmaceutical Manufacturing Initiative, so an academic perspective on the
study of manufacturing processes.
Norman Winskill and Steve Hammond from Pfizer are going to give you the
industrial perspective from their point of view, and Pfizer has been adopting
some of these technologies, not in their regulated lines but in other aspects
of their R&D. And finally we'll have
an FDA perspective from Ajaz Hussain, who is the Deputy Director of our Office
of Pharmaceutical Science.
Hopefully,
by presenting from these various perspectives, you'll get a broad view of what
the problem is and also some of the various approaches that we might take to
this problem. For the Science Board
specifically, we'll be asking you at the end of the day if you are able to
support our approach and what your comments are on this approach. What resources, external, scientific,
academic or whatever, what resources do you suggest we would draw on to bring
this about, assuming you do support the approach? And, finally, are there additional aspects to the regulation of
pharmaceutical quality that we should focus on, that we are not adequately
highlighting in this presentation and approach?
So, with
that, I'll call on the first speaker.
DR.
ANDERS: Janet, do you have time for a
quick question?
DR.
WOODCOCK: Certainly. Go ahead.
DR.
ANDERS: In your third slide, you--I'm
trying to quantify the magnitude of the issue.
So you talk about recalls and loss of availability of essential
drugs. Can you educate us a little bit,
what's the magnitude of this problem?
DR.
WOODCOCK: All right. Well, sometimes it's difficult for us to
talk about these things, which is unfortunate.
But I think even in the era of bioterrorism, for example, there are
certain antibiotics and other drugs that used to be manufactured, that are in
short supply or are not manufactured.
One of
the contributing factors to not manufacturing drugs is that the process, it is
felt it would be so expensive to bring those processes up to the modern
standards, do all the validation and all the other work that is required to be
done, that companies abandon the manufacture, abandon that product. And so we get into situations where we have
more single-source manufacturers, where we have manufacturers, we have products
where people abandon the manufacture.
DR.
ANDERS: Is it 5 percent of the drugs
that are recalled, or 50 percent?
DR.
WOODCOCK: Oh, you mean what is the
relationship of recall to manufacturing problems?
DR.
ANDERS: What's the magnitude of this
problem? And then, again, the loss, I
guess you just now addressed the loss of essential drugs that a manufacturer
may say, "Well, I'm going to quit making this compound," and so we
have one provider.
DR.
WOODCOCK: Right.
DR.
ANDERS: But what's the recall? What are recall numbers like?
DR.
WOODCOCK: We can get you the
numbers. They have been rising over the
past few years, but that's only one aspect.
Let us go through the entire presentations, set of presentations,
because that's just one facet of this problem.
I'm not
saying that manufactured pharmaceuticals are of low quality now. That's not really the issue. All right?
But getting into problems that lead to recalls and other shortages and
so forth, that represents a problem, a system problem, you know, and we are
constantly dealing with that. We're
dealing with shortages that are generated by different manufacturing problems. I can tell you that we are constantly
dealing with this. And I can't give you
a figure, like how often it happens, but it's a constant theme that the FDA has
to deal with.
All
right, we'll move on to the first speaker.
DR.
DEAN: Good morning, everyone. My name is Doug Dean. I am from PricewaterhouseCoopers. I'm based in Basel, Switzerland. And I am not an accountant.
You're
going to get a double act this morning.
I'm here with my colleague, Frances Bruttin. Together we have been working in the pharmaceutical sector for a
number of years, myself for about 25 years in pharmaceutical manufacturing, and
we're going to share with you some of the observations that we have had working
with our clients all over the world for the last decade or so.
And I
really like this image to start with, because I think it sums up where we're
coming from. It's a combination of
cost, time, and regulation. Before we
get into this, I'd like to just declare some biases here and make sure that you
understand the perspective that we're coming from.
First and
foremost, we're engaged by our clients to solve business problems. This typically means looking for ways to
improve the way the business operates and generate greater return to
shareholders. We've been doing this
exclusively in the manufacturing sector, largely looking at new processes, new
ways of working, and new systems to support those ways of working for the past
decade or so, primarily focused on working with R&D based large
pharmaceutical manufacturing organizations.
I think
what we'd like to shortly talk to you about today are the perspectives that we
have seen in the past decade and the conclusions that we're reaching, basically
that the way things currently are in the sector and in the industry is
something that can't be sustained going forward. I think we've already heard from Janet this morning a couple of
comments about the state of pharmaceutical manufacturing in general, and I'd
like to emphasize that. Compared to
other sectors, the capabilities and the state of pharmaceutical manufacturing
is actually quite poor.
We are
going to show you how the way that we traditionally go about measuring our
performance in manufacturing actually hides the opportunity for improvement,
and we need to consider some different ways to measure it. The infrastructures that we put in place to
support the need for the regulations that we have to work within tend to be not
very economically feasible.
So
there's opportunities there for improvement, and that through the introduction
of new technologies, but I think critical to emphasize, technologies that are
not put in in isolation. And I would
like to draw that point out very clearly today.
And we
will conclude by showing you that there is a massive potential for win-win,
both for the consumers, for the industry, and for the shareholders, chiefly
through four different aspects here.
We're going to show you how we can reduce risk; increase the
effectiveness of our ability to be compliant with the various regulations that
we have to deal with. In so doing, we will
show how it's possible to dramatically reduce cost in manufacturing; and by
doing that, to give some increased return to the shareholders.
And these
things combined together, then, are going to create a win for the regulators
and the consumers and a win for the business, and we'll show you how these
things are strongly linked.
I think
it's important to understand the environment that we are currently working
in. I mean, here big pharma. If we look at what has happened in the
industry over the past 30 years, we've seen a dramatic decline in growth, from
double-digit growth 30 years ago to what seems to be a level of growth in the
market that's leveling out at about 6 percent per year. Every economist has got a different opinion,
but when you talk to them, they are generally in agreement that the industry
will continue to grow in an environment of about 6 percent per year.
If we
look at the total annualized return to shareholders over a five-year period,
and look at that over the last number of years, it's been steadily
declining. It's the investment from the
shareholders that provides the capital to grow the business, to look for new
products, so it's important that the shareholders do get a return. But I think it's important to draw out here
that in this environment of reduced growth, there has been reduced return to
those shareholders.
If we
look in the engine room of the industry here, the innovation and the discovery
and bringing to market of new drugs, we've seen a dramatic fall-off overall in the
productivity in research and development.
We as an industry are pouring tens of billions of dollars into research
and development but we're getting less and less out of it, measured in terms of
the number of NCEs or NMEs that are brought successfully to market each year.
When we
are bringing new drugs to market, what we're finding is that over the past 30
or so years there has been a dramatic decrease in the window of opportunity
that we have to get a return on that massive investment. So decades ago one could enjoy a window of
therapeutic exclusivity on the order of years, but lately we've seen that
shrinking down to a matter of months or even weeks. So bigger investments, market growing more slowly, less opportunity
to make a return on those investments, emphasis on time, time, time, get to
market more quickly.
When we
look in more detail at manufacturing in general, and I would say this is across
the board in virtually every dosage form, whether we're talking about active
ingredients or secondary production, we generally see that the levels of asset
utilization in the sector are very, very low, typically about 15 percent. But because of the way that we measure the
way we use our assets, we often fool ourselves into thinking it's a lot higher,
and I'll draw this out more clearly for you later.
We tend
as an industry to accept the fact that we're going to have to throw away 5 to
10 percent of everything that we produce, or we're going to have to rework it,
and we plan it in.
It
typically takes, in a new product introduction environment, a good deal of time
to actually get the scaled-up commercial level processes effective, working to
the levels that we would like them to work at, and this is taking far, far too
long. And it's basically accepted, I would
say.
And as
we'll show you, very typical across the board to see a total cost of quality
approaching 20 to 25 percent in some cases of period costs in a given
pharmaceutical manufacturing plant, and this is accepted as being just the way
it has to be in the business. So that's
the environment that we find ourselves in.
Conclusions
here is, it's tough and it's going to get tougher, so there's going to be an
increasing, an intensification of competition within the business for
resources. So if we're asking for
capital investment to improve manufacturing, well, R&D are asking for more
capital as well, so we have to have and be able to demonstrate a very good
return on that investment.
And I
think the other key conclusion here is that manufacturing has been really
regarded as a Cinderella function in the industry, the poor stepchild, and
there has been a "cause no problems" mentality which has really led
to what I can only characterize as benign neglect of the need for higher and
better performance in manufacturing operations. Steven Wheelwright did a number of studies showing that
manufacturing as a function has to stop being internally negative or internally
neutral and become an external supporter to organization strategy. So manufacturing is going to have to
contribute more than it currently is.
Now, when
we start looking at why is it like this and where do the problems come from, we
find that actually the problem happens downstream. It happens, begins to happen long before we ever get to commercial-scale
production. We find that processes are
transferred into manufacturing that are in most cases not well understood, and
in many cases are not capable at the scales that we have to manufacture at. They are capable in laboratory or at
clinical scales but not at commercial scale.
We find
that the emphasis and the focus on new product introduction has resulted in
masses of data that are going into the CMC section, but somehow we are missing
a lot of critical information that helps people to actually understand the
processes to be able to operate them effectively in a production environment.
We have
done a number of studies that have showed that long before we get to Phase III
clinical trials, approximately half of the manufacturing costs are already locked
in, and therefore we're not able to do anything about it in terms of reducing
them when we finally do get to production.
And,
finally, we find that there is little basis, little scientific basis to take a
decision to trade off the pressure to get a new compound to market more
quickly, to trade that time off in exchange for maybe a month or two more to
spend more time understanding the process in order to enjoy the benefits of
increased quality downstream.
Just to
give one example here, a client that we worked with a number of years ago, a
very simple example, this is an emulsion product. The critical quality attributes relate to the size of the
droplets in the emulsion, and it's measured in an in-line process environment
by shining light through and looking at the degree of absorption of the light.
And there
were some upper and lower control limits set on this process in order to get
the emulsion the way that it should be.
The usual validation studies were done, three batches at exactly the
middle of the upper and lower bounds there.
The
problem was, the process was not well understood, and in fact it had been noted
earlier in clinical manufacturing that the function of absorption as a function
of the control parameter created a situation where we were actually out of
limit in one of the quality attributes, but this was somehow not understood in
transferring the process to manufacturing.
So we've
now got a situation where we have a process in manufacturing, we've got an
upper and lower control limit, we have operators who are doing their best to
keep the process within those boundaries, but it's fundamentally flawed. Even though we're within those boundaries,
we're still producing a product that does not meet its quality attributes and
will have to be scrapped or reworked.
What we'd
like to show you, and I'll turn over to my colleague France Bruttin here to
take you through this, three key things here in order to start to address this
problem.
One is
that in looking at manufacturing operations, we need to clearly understand
where the value-adding activities are and where the non value-adding activities
are. We find that non value-adding
activities add cost and time but they don't add value to the product.
We'll
take you through one or two examples that show how, as an industry, our
traditional approach to measuring performance in manufacturing hides the
potential to improve and reach higher levels of performance that we really
need. So as a non-accountant, I can
blame the accountants for this, and we'll take you through some of that.
And we'd
like to show you some rigorous approaches that are being used in other
industries to apply a more rigorous and scientific-based approach to determine
the ability of a process to be right the first time.
I'll turn
it over to my colleague Frances Bruttin now to take you through this. Frances?
MS.
BRUTTIN: I think, building first of all
on a point that Janet was trying to bring across, where she was saying that the
manufacturing, the pharmaceutical manufacturing tend not to be taking
opportunities of the new technologies and the innovation and bringing them into
their daily work hangs around them being adverse to change, hangs around them
being afraid of bringing change into the manufacturing process because of the
impact with the regulators and the amount of paperwork that they would have to
go through, so they prefer to stay with today's inefficient processes and ways
of working and continue to get the product out the door.
I think
we are going to tell you a little bit today that it goes a little bit deeper
than that; that in reality, within the basis of manufacturing, there are a lot
of inefficiencies, there is a lot of emphasis on trying to test quality in and
prove quality, whereas if we take a few steps back and go back to basics, there
are some fundamental things that we can change, and we will get quality and
regulatory compliance out as a consequence.
So I'm going to take you through some of them.
First of
all, if we look at what actually happens in the plants and we distinguish
between value-added activities and non value-added activities, this is an
example of a dispensing process. The
process actually takes three days to be completed. Of those three days, 1 percent of that time is actually value-added. That is the weighing of the material before
it goes into the hopper or the dispenser.
The rest of that time is dedicated either to transportation of material;
scanning in bar codes. It's waiting
while the QA come back with the results of the bar code. It's moving the pallets from one area to
another area. So over three days, 1
percent of all that time is actually value-adding.
If we
take all of the subprocesses that make up the process from the raw materials to
finished goods, the actual value-added time as we go through dispension,
granulation, compression, coating, and packaging, over a 35-day process, three
days are actually value-added. And
these are real numbers. These are
numbers from the studies that we have done actually in the shop floor, on the
factory floor.
To make
it a little bit more realistic, we've actually taken photos of where these
delays can be observed. what we have
here is, after dispensing, the material is actually stored. In this case it was actually in the
alleyways between the various different rooms where the production processes
were taking place. So here we have
delays. They were staying here for
maybe typically five or six days.
Work in
process, again, waiting until the next piece of equipment was ready; waiting
for results coming back from QA for the in-process controls. Again, all this material is captured, which
has been held up; it's work in progress.
And a
very typical photo of what turned out to be 100 percent inspection. There was a problem here with the blister
pack, and so these ladies over three shifts for a period of two or three weeks
did 100 percent inspection for a single batch.
This is non value-added activities.
This is not contributing to the quality of the product, and it's
certainly not contributing to the health of the final patient.
If you
measure what is actually value-adding and non value-adding, and the way we do
this is through an activity-based analysis--so we look at what the people are
actually doing, we're looking at what is happening to the product as it moves
along the process--you can identify those processes that are not actually
adding value, you can reconfigure them, and you can make a much more effective
manufacturing process. The best we have
seen is about 50 percent. That means
the ratio between non value-added activities and value-added activities is
50-50. So in this example it is
possible to go through the entire manufacturing process in 6 days as opposed to
35 days.
So
value-added/non value-added is one aspect.
The next aspect--and I have to say this is probably due to our
colleagues accounting--is how we measure the effectiveness or the output of a
factory. We use standard accounting
methods. This is also driven by the
various MRP systems that have been in place.
We talk about standard costs. We
talk about standard utilization.
This is
typical of what you will see. For asset
utilization, what is defined as the total availability of an asset? We have here 80 hours a week. That represents two shifts per day, and
there is of course the scheduled downtime and the scheduled conversion
time. But since the accountants know
that there are traditional losses and other expected losses and delays and
waits, then they also schedule in a certain amount of time that they know will
not be operational. Because they
schedule it in, it's planned in, so suddenly we lose visibility and
transparency of it.
So the
people who come later say, oh, well, the allocated operational utilization is
set at X percent. That X percent has
already taken in the fact that the actual equipment is sitting idle. And therefore if they hit 90 percent of that
X percent, they feel they're doing a good job.
If we
look in reality at what is happening--and remember these assets that we have,
we have capital investors in those assets, so those assets are alive, let's
say, 24 hours a day, 7 days a week, 365 days a year. So when we're calculating asset utilization, we should be
calculating it on that basis. So
instead of it being 80 hours a week, it's actually 160-hour-a-week
availability.
If we
then look, we find out that we have quite a high percentage which is
unscheduled downtime, so downtime due to problems on the line, due to problems
on line switch-over. Then we have
operational time losses which are due to, in some cases to poor planning; to
delays, again, delays with suppliers, delays with other material coming
in. And then which I think is actually
quite sad, when we look at what we're doing with our machines, we're actually
spending quite a significant amount of time producing scrap, i.e., all those
batches that do not meet the quality control that we've set on them, or
reworking that scrap.
So at the
end of the day, the actual effective up time is actually a very, very small
percentage. From our studies this has
come out to be around 15 percent asset utilization.
So we've
looked at value-added versus non value-added, we've looked at the difference
between measuring for accountancy purposes and measuring for performance. So some people may be saying now,
"Well, that's fine. I can blame
the plant manager on all of that. This
has nothing to do with our scientific approach to manufacturing."
Let's get
to the main point. The main point is
around the pharmaceutical process. We
have been arguing that this process is not well understood. It's not well understood when it's
transferred from R&D over into manufacturing. And what we have here is a way of measuring the processes, a way
of comparing processes from one process to another. Obviously it's sigma.
It's not rocket science. It's
based on standard deviations.
It is a
measure that has been used in various other industries. For example, if we start from manufacturing,
Motorola and Siemens, around consumer electronics, but also in service
industries, GE Capital, so for people who provide financial services, and also
Caterpillar. So it's a way of measuring
lots of processes, not only the pharmaceutical process but all the processes,
so the steps that people go through to support manufacturing, how people take
those let's say manual steps, how they started, and how repeatable those
processes are.
What this
lets us do is see how well we are performing, see how repeatable our processes
are through the plant. Obviously a
higher sigma value indicates better performance. If we look here in terms of defects a 2 sigma process has around
300,000 defects; a 6 sigma process has 3 defects. This is what you may have heard about in terms of zero defects
manufacturing.
If we see
where the various industries are, semiconductors are between 5.5 and 6. Baggage handling in airports is a 4 sigma
process. So where do you think
pharmaceutical manufacturing is?
Probably if I asked a CEO, he would tell me, "Yeah, we're somewhere
between 4 and 4.5." Some people
are saying uh-uh. We're actually about
2.5 consistently. Consistently 2.5.
Two ways
of seeing this. You can measure the
actual processes, and you come up with a 2.6, 2.5 measurement. Or you look at the cost of quality, or
should I say the cost of poor quality.
There is a direct correlation between the two, and as Doug had
previously mentioned, we are all the time coming up with somewhere between 20
to 25 percent of period costs are costs that are related to poor quality, not
only the costs for the QA and QC function, but it's the costs of rework, it's
the costs of scrap, it's the costs of prevention appraisal, 25 percent.
Obviously
everybody here understands standard deviation and sigma, but just very briefly,
obviously there's two aspects that you're trying to control. One is the deviation around the particular
process, between its upper and lower limits, so the spread. And the second is the ability to maintain the
particular process between those limits over time, so the shift. So what you want to do is obviously keep the
process with precision and with accuracy.
Now, if
we take all of these together, what does this mean for the pharmaceutical
manufacturer. Well, one point is,
obviously it's unit costs. Taking these
four together, we can have a dramatic influence on bringing down unit costs.
We start
off by material costs. Obviously the
reduction in scrap and waste, I think Doug mentioned is between 10 and 15
percent, so you can immediately reduce that down to I think somewhere--2 percent
is the max in terms of scrap and waste.
With the
reduction of non value-added activities, there is obviously a possibility to
reduce the period cost. Part of this is
reducing those costs of compliance, so reducing the amount of internal and
external failures, and then once you are confident with the high level of
quality you're getting out because you know your processes and they are highly
capable, you can then reduce the amount of money that you're actually spending
on prevention and appraisal.
On the
other hand, your efficiency is going up because you're increasing the process
yield due to the less amount of scrap, and your plant volumes can go up. Why?
Well, if we look at the argument around non value activities, previously
that process was taking 35 days. It's
now taking 5 days. If you can absorb
the capacity, you can now do five runs in the time it was taking you to do one
run previously.
So the
net result of this, if you address these factors, is it's possible to
significantly bring down the unit cost of production.
Let's
shoot forward to , I don't know, five years, to the company that is performing,
that's outstanding, that's leading terms of pharmaceutical manufacturing. They are operating at a 5 sigma level, so
what does that mean?
Well,
their quality and compliance costs are down to somewhere between 3 and 5
percent. The unit cost of production is
60 percent lower than the competitor's, who are still operating at 2.5 percent
because they weren't at this presentation today. Cycle time has gone down to 5 days, so obviously their
productivity is up, their yield is up.
And this
point, again, newly introduced processes are effective immediately. We saw again when Janet showed that slide
with the number of supplements that were coming in, that's all the--the process
has been transferred from development into manufacturing, and then we tweak
it. We get it a little bit better and a
little bit better and a little bit better, and we blame those people in
development because they didn't give us the right process.
What
we're saying is, if you can use process capability and 6 sigma concepts already
in development, so that you know that you understand the process, and the
process is capable and is able to stay within the limits that you have set, you
can pass this then on to manufacturing, who then know that from day one that
process is effective. They can then do
some fine-tuning, but you shouldn't be seeing all of these supplements because
the fine-tuning is based on a statistically stable process which development
and manufacturing understand.
Key
enablers to make this move? First of
all, I think I would really like to focus on process understanding,
understanding what is happening in the process. Second point is understanding the parameters that influence that
process, those parameters that you are going to measure, those parameters that
you are going to control to keep that process within the defined limits. The process capability hurdle is already in
development to ensure that the processes that manufacturing get are actually
effective and capable from day one.
Obviously technology is a huge enabler in this area, as well.
And just
some examples, we'll hear more later from my colleagues: Near infrared analysis of raw materials and
in-process controls; continuous high-volume microwave sterilization; on-line
measurement of variables, and supported by sigma tools, so you know exactly
where your process is.
With
these technologies there is also a need for encompassing enterprise
technologies. So, for example, once you
have all of these points, they need to be integrated into electronic batch
records, so that again you're not wasting time waiting for the results to come
back from QA or putting the whole batch record together manually. There is no point of having these
technologies in place and then taking the paper results and pasting them into
your batch record. And I won't even go
near 21 C.F.R. 11 at this point.
And then
finally, obviously, electronic document management solutions to enable you to
share information between development and manufacturing. And, oh, yes, the thought of the
manufacturing people being able to contribute early into the development of the
CMC section, before it goes in for the submission, rather than achieving that
as it's thrown over the wall from development and being forced to live with
consequences of what happens in development.
So what's
the upside of this? All of those
elements contribute to something which we call the compliance infrastructure,
the organization, the people, the procedures, the policies in place to ensure
compliance with internal quality management systems. Let's not forget that we're doing this to ensure the quality of
the end product. And the second point
of compliance is with the regulators.
What this
can do is fundamentally shift the cost of compliance curve. What we see, the blue curve is where it is
today in terms of your typical 2 sigma performance. By bringing in these new changes, you can move that curve down to
5 sigma performance, and you immediately get direct cost recovery but you also
get a compliance gain.
What does
this mean for the industry? Well, in a
win-win situation the industry will be moving not only towards quality to meet
the regulatory needs in terms of, if we take point 3, if that was the paradigm,
then point 3 would be going straight up.
But here what we want to do is a balance the need for quality and the
need for productivity. So in the move
of moving from 3 sigma to 6 sigma in terms of doing the right thing right, we
get quality and we get productivity, so we end up with a win for the
regulators, a win for the consumer, and a win for industry.
So, to
summarize, the industry needs to measure for productivity and not for the
accountants. The solution is not just a
collection of technologies. It's more
complex than that,. And there is a
win-win. The economics of compliance,
where is the point on the cost of compliance where there is a win for the
industry and a win for the regulators and the consumers?
Thank
you.
DR.
WOODCOCK: Perhaps we can hold questions
as we go through, if that's okay with the Board. If you have specific questions, perhaps you would like to ask
them now, or clarifications. Otherwise,
we're going to have a long discussion period.
All
right. Thank you. Now, the next speaker is Dr. Raju from MIT,
and he is going to talk about pharmaceutical manufacturing from an academic
perspective.
DR.
RAJU: I'm going to try to follow up on
a number of things. What I'm going to
try to summarize in the next half an hour or so is a set of research activities
we have done within the MIT Pharmaceutical Manufacturing Initiative. We are a technology university and a
business university, and so we try to use some of those skills to try to
understand the opportunities and communicate them to society, the regulators,
and the companies who fund a large fraction of our research.
The
purpose of the Pharmaceutical Manufacturing Initiative is to describe and
capture the opportunity to improve pharmaceutical manufacturing. Let me see what that means. What that means is, if this were the
pharmaceutical industry, and the industry and the academicians are focused on
many different aspects of it, we're going to choose to focus on this aspect of
it. And really it's very rare to focus
on that aspect, and that's going to be the subject of my talk for the next few
slides.
This is
something that has been the course of many years of working, and we have had a
chance to work with almost every brand name company, a large number of biotech,
and some branded generic companies as well, and so over the years we feel we
have had a reasonable set of experience base that makes us feel that maybe we
can begin to make some conclusions.
We were
very excited to start this manufacturing initiative at MIT, and if this was our
goal, it seemed like a good place to start is to find out what pharmaceutical
manufacturing really was. So we went
around to the vice presidents of manufacturing, to the companies, to society,
to each other, and said "What is manufacturing, what is this piece
here?"
We were
all excited. What we saw was something
very different. What we saw was an
organization that was told, "Don't be on the critical path." "You're not as important as
R&D." "You're a cost." "Don't stock out." "Be sure you do it the same way you
told us for the next 12 years, and show compliance, and we'll come every couple
of years to your plant when we can to see how well you're doing." And that's the investigators, as well.
From a society,
from the rest of the organization, there was a message that says, "Just
don't screw up." "You're a
cost center." And I can't think of
anything worst for somebody to tell me, because it means I don't add value to
society. The vice president of manufacturing
says, "How can I win?" And
the definition of a win almost seems nonexistent.
The
result of that shows up in the implementation of the technologies, and we'll
show you some of the consequences and some of the opportunities of those
technologies as we go forward. But if
this was pharmaceutical manufacturing, then either starting this initiative at
MIT was something we shouldn't have done, or maybe this problem, so-called
defensive mind set, is really the opportunity.
And we
said yes, that's what it is, let's try to understand why, let's try to
understand the drivers of the system, let's get to the common things of science
and technology, and then we'll change the results that come out of the
system. We then brought a significant
number of vice presidents of manufacturing, who all said "How can I
win?" and said "Let's all get together. Let's begin to formulate a winning strategy."
This is
for the MIT Sloane School of Management, which has a very leading management of
technology program, the Department of Chemical Engineering, and the Department
of Industrial and Physical Pharmacy.
Although disputable, the Business School, Chemical Engineering School,
and the School of Pharmacy are rated to be one of the best in their
disciplines.
And we
said, here is a set of vice presidents who are trying to figure out how they
can win. Science we think should help
society, and science could be a win-win situation. Let's begin to listen to their concerns. Somewhere along the way, since this is a
regulated industry, we will have to figure out what we do with the FDA, but
let's keep them in the equation. Let's
figure out what we want to do, what the opportunities are. And somewhere along the way we'll start
talking to the FDA, when we feel we are ready, but we have said we've got to do
it sometime. And I have been fortunate
to be involved in all those three different disciplines through formal
affiliations.
If that
was that tiny little box that we call pharmaceutical manufacturing, and we all
want to analyze it together to understand why it looks the way it is, let's
standardize on a few boxes around that box.
And if you think of pharmaceutical manufacturing as this 12 to 15-year
process, sometimes more, sometimes less, over time when you have lab scale, pilot
scale, and manufacturing scale work being done, and over space where you have
the chemistry or the biology of the system done in the active ingredient, then
the dominant physics around the components, and then the pill finished, and
then the packaging which is the paper around it.
And if we
say let's look at this over time and see what decisions we make, and over space
and begin to understand why, and figure out if there is a win-win, what is the
role to transform pharmaceutical manufacturing, we said those are the boxes
we're going to talk about for the next few slides. What aspects of those boxes should we talk about today? And we said, let's draw a big box around all
those boxes and say, let's look at pharmaceutical manufacturing and discuss it
in one of those dimensions of performance.
Now when
we talk about cost, that's going to be sensitive. When we talk about quality, between the regulator and the
regulated there are different perceptions of cost and quality and the reasons
for them. Safety is something that's
universal. I think everybody is doing
very well there.
And among
these choices, I will decide to choose to talk about time because it means the
same thing to all of us. We all have
the same watch. It's neutral. The cultural aspects, the accounting
aspects, are something that we can deal with within our companies. And so the rest of my talk, I'll focus on
time, but a lot of my work involves cost and quality as well. We can't do it all. Let's focus on something that we can all
have a win-win on.
So let's
take the simplest possible step, blending and blend uniformity as a central
performance measure of that simple step that's supposed to take five
minutes. And being a chemical engineer
who comes from the fermentation area, when I began to focus on this five-minute
step, I was really disappointed because it's such a simple step and we worry so
much about it. I wanted to find out why
and I wanted to find out what the opportunities were.
So the
focus is only on this tiny step as an example of the possibilities over
time. We look at blend process
development from here to here and say, off-line, today's technology, versus
on-line, tomorrow, day after tomorrow's technology. Where is the win-win?
What is it? What's stopping us
now? What can we do about it?
First, it
didn't seem like it was the technology itself.
We were fortunate, we had a professor from the Mechanical Engineering
Department who said, "Here is light, here is lasers. Let's shine them in through the blender, and
I think through the window you can look at uniformity as well as that piece
that you've been using for so many decades because somebody put their hands
into the blender that way."
So this
is MIT's duct tape technology here, not necessarily FDA-approved, on a pilot
plant, through a window looking at blend uniformity. The decision is a very simple one. The question is a simple one that says, "When are we done
blending?" which is "When is the relative standard deviation or the
signal at the end below some number?"
And the number is 6 percent, 5 percent, 4 percent, depending on where
you draw the line.
But if
that was the simple question, the answer was not very disputable. We could do it very reliably, depending on
where you start, what the technology is.
LIF, one of our inventions, together with NIR, something that brought up
together, and a lot more analytical technologies can do this very well.
The
technology was easy to develop, relatively--is pretty well developed
today. This is an opportunity for us to
do something about it. Now what? We have something with duct tape in our labs
and some of our plants. Who are we
going to start talking to? What do we
compare it against?
And the
obvious question that says, compare it against what you have already, and that
is the thiefing assay that I told you about, these rods that are put into the
blender and then samples taken out physically.
We know it's the thieving itself that drives the variability rather than
the on-line sensor.
And then
we say, "Can you compare the on-line sensor with the off-line sensor for
different active concentrations to determine end point? It's clear that on average, you can. It's clear that the new technology is less
variable than the old technology.
The
question then is, do I still have to use that as a benchmark to prove my new
technology, when it's the old measurement that's the problem? If it is, then I'm going to have to collect
a lot of data, not because it's a blend uniformity problem but because I'm
comparing against an old measurement technology where the measurement is the
problem.
The
question then is, how do we begin to formulate if this is the right strategy
for us to go forward, or we should look at the process and the product
uniformity, which is really what CGMP should be all about, and we all agree it
is.
So
what? We have a sensor, developed
pretty quickly, that's mountable technologies that are similar, can do the same
thing, may be less variable. Let's
figure out that it means something to all of us, as otherwise it's not worth a
purely scientific exercise.
Let's
define cleaning. Cleaning, yes, it's that five-minute step, but it has a lot of
steps before and after it. If we want
to understand "So what?" we want to understand what the consequences
are on the two sides.
Blending
really has these different unit operations where you clean a blender, you load
a blender, you mix, you sample, you transport to a lab, and then you have a
result and a decision here. You can be
undermixed, mixed, or then you have to discard it if you're overmixed, and this
is a new phenomenon that is quite well described within the industry, called
segregation. You can actually overmix
something.
The point
being that while the physical process here of making something is here, the information
process of measuring whether you have succeeded is far away in another
functional department. When the
material process is disconnected from the physical process, what is the space
between the two called? It is called
inventory. That's the difference
between the material process and the information process, and that's why we
have all these inventory levels.
So if we
were to transform from on-line to off-line technology, we have to get the
information and the material flow to be in the same place. And so if we can get the on-line sensor onto
the blender, on that simple operation, we can change the business processes
that were talked about in the previous presentation, and we can put material
information flow on the same place. We
can not only do that, but once we know when to stop the blend, we can start
figuring out what to do about variability within the blends.
And so we
said, "This looks like it's important.
It looks like it could make a difference. Let's try to figure out how big a difference it is, because the
bigger the difference, more likely we would want to do it, more likely we are
going to start communicating, more likely we're going to start sharing
data."
And so we
said, "Let's capture all of those steps," the blending steps that I
told you about, the cleaning, the charging of the active, the blending, the
sampling, the QC, the decision, and the retrieving. "Let's capture all those steps, collect data from all these
companies." We have a consortium,
so we have a basis to collect data.
"Let's try to figure out how we do it today and then ask how can
you do it tomorrow."
This, for
example, charge active can be modeled by each of its steps. You clean the blender and then you load the
blender. You can then go inside the QC
lab, and you can see you transport to the QC lab. You hold in the QC lab, you retrieve in the lab. You then prepare, test, and analyze. And then you have the people in the lab, and
they're all busy moving from here to there trying to do a measurement of product
uniformity based on this old technology.
Let's
look at process development of just blending, now, just blend process
development versus the old technology versus the new, and say, let's say that
in that day, January 1, 2000, when we celebrated the new millennium, we
continued, and we do, to use the old technology. How long will it take for us to actually get a good blend, based
on today's industrial practices?
And so we
start the blend process development process, and you can see the blending taking
place, the sampling taking place, going to the QC lab, a decision being
made. Is it uniform? Is it blended? You then go to the lab and you have a different organization
figuring out whether to approve it or not.
The arrow
there indicating we just got our first blend below the RSD specification, and
we're so excited. We look at our date,
and it's the 4th of January in the morning.
We started on the 1st for this 5, 10 minute operation. Now I've got one. There's this thing that says, if you can get three in a row,
you're all set for the next 12 years, or at least the interpretation of it that
says-- one, I've got two. All of a
sudden we're not getting the third. But
I got the third. It's now five days
in. I go into my lab and I look at what
everybody is doing.
Now you
can look at what people are doing, and if it's red, it means that they're very
busy, all your QC people. Now they're
really busy, and they're really busy moving the samples within the lab to
figure out if it's uniform. Because I'm
not sure this one is going to pass, I'm going to take a few extra samples.
Since
most of our analysis is based on wet chemistry rather than something you can do
in the process, and most of our products are solids, you have a whole bunch of
wet chemistry based HPLC equipment, red, indicating that they're very
busy. We have a lot of busy equipment
and people in the lab, and since we're not sure whether we're going to succeed,
a lot of material information leads to a lot of samples waiting in the lab,
right there.
You can
go down to our plants, not just the lab, and you can say, "What are the
operators doing?" Fairly busy, not
fully busy, because they finished their part.
They're waiting for what to do next.
Blenders waiting to figure out what to do next, because they don't know
the result. The result of information
is separated from the physical aspect of the actual making. And what is the difference between the two
called? Inventory. That's where the period costs, all the costs
show up. Now what do we do?
Well, we
say we've done three. There's this
argument that's a very common one. If
you look at the industrial average, 27 percent is our cost of goods sold, 73
percent as a result is our gross margin.
We've done three in a row. We
now want to ask the question, should I do a fourth? Should I do a fifth? That
would become the trade-off of time versus cost versus quality--
CHAIRMAN
LANGER: Can you use the microphone?
DR.
RAJU: --versus cost versus
quality. The question, the common
response to that is no. I've done
three. I pretty much understand our
process, given the technology that I have.
It's now five days forward, and I'm going to go forward to do this for
the next 12 years.
Now,
during the next 12 years you have another argument. It's not a time-to-market argument now, if you've been
approved. It's now a cost of changes
and a cost of supplements argument, and there you have this so-called cost of
supplements and paperwork argument that I'll talk to you later. But before we go into manufacturing, let's
stay in process development and do it right, and go back to the same date of
January 2000 and see if we might learn something.
So let's
go back to January 1, 2000, the same date again, and say this is exactly the
same, exactly the steps. I'm not
cheating here. Charging the active,
loading, and cleaning. It's exactly the
same date. No practices around
changed. Nothing changed around
cleaning, nothing changed around sampling.
The only thing that has changed is you're using the on-line sensor that
you took a few months or a few years to discover, although there is a lot of
research that was done before it. Let's
get started and see what kind of a trade-off we have across quality, time, and
these competing alternatives that make our life difficult.
So we
start at the same time. It's the 1st of
January. It's still the first day, and
we just got our first batch. A little
bit more than a day, we finished two, changing no other practices. One and a half days, we finished our three
batches.
Now, how
much inventory do you think we have?
You've redesigned your process using technology that gave you cost,
quality, and time all together. What is
everybody in the lab doing? Let's look
at the QC people, red indicating busy.
The question then becomes, "Oh, my God, do we need those people
anymore?"
[Laughter.]
And then
you have the CEO, vice president, saying "What is the right head
count? Can you benchmark across the
industry and tell me whether it should be 20 percent or 30 percent?" And the opportunity here was, when you had
the right technology, you didn't have to have that thing called QC. The same people, instead of focusing on
moving samples which is a doing job, maybe could think about the blend itself
and the uniformity self, which is the process understanding job, and maybe
they'll have more fun, and maybe you'll keep them a little longer, and maybe
you can pay them a little more.
You just
got three. You're not exactly, in
removing some non value activities, potential for value-added activities, you
have a whole bunch of equipment that was once busy and now is not necessarily
busy.
You now
have another question. You know, if it
took you a day and a half to do three, maybe you can go back to those three and
figure out, "You know, I'll have a higher standard." You can do four and it's still two
days. Take three days, you can do
five. You can do six in a little bit
more than two days.
You now
have done twice as many runs, you have done twice as much, maybe more, process
understanding. You now have a basis to
say, "I'm going to do something I understand for the next 12 years,
because I chose to open my eyes, to develop some basic technologies." What would the regulators, to make them
understood and communicated? And while I
think we all want together, because actually my uniformity may be better, my
measurement is certainly better; I may be faster, I am; I might be cheaper, I
am. And it didn't seem like anybody in
this overall societal framework lost along the way.
That was
product uniformity, and we can keep going forward on that. Let's skip to the next step, because I want
to give you another representation as well.
If you
were to look at old versus new, by looking at the business transformation of
these processes based on technology, that means looking outward and deciding to
work together. We have fundamentally
changed the performance measures, whether you measure it as cost, quality, or
time.
I said
I'll focus on time because it's neutral.
The impacts are not 10 percent; it's 10 times in terms of blend process
development time. This is the old
technology where you have one, two, or three blenders.
Whether
you do on-line technology versus off-line technology, it is not necessarily the
factor of 10 improvement. It's the
variability reduction, because the predictability comes when you automated and
understood and then automated your processes, and there are all on that sensor
right there, instead of being in a human variability of deciding whether it's
Monday, Tuesday or Wednesday, and whether I'm going to wait until Monday to
move my samples to the lab.
But
there's an investment that has to take place across all of us to get this to
happen. This is an argument of the
potential, that you catalyze us to all work together to make it happen.
So this
is not 10 percent here. We're talking
about 10 to 15 times improvement in manufacturing. If CGMP is all about variability reduction, we get that
certainly. To become independent of
some of the product and organization I think would allow for a lot of
generalizability beyond.
So we
took a little piece called blending, it's five minutes, and we saw this huge
opportunity. That was the opportunity
across time. Let's look at the
opportunity across space, and say let's look at routine manufacturing rather
than process development, and say where is the time being spent on average,
first? And if we look at 6 sigma, it's
about looking at below the average, but let's start with the average. We have to simplify life. We have to start with averages because
that's one number, a summary of reality at that point.
For the
sake of simplicity I will not talk about the active ingredients. Since we finished this example, I'll focus
on this example, and we can have so many different products once we decide to
look at horizontally, and if I choose just a high volume product you might say,
"You know, you forgot the others," so we look at all the different
representatives and look at where time is being spent.
If you
look at our processes, you'll find they look unbelievably similar. If I go with the standard set of color
coding, blue for the process steps and red for the QC testing steps, you'll
find that we measure quality very much at the end. Wow, it takes a lot of time.
Wow, it was pretty expensive. We
don't really necessarily measure significantly in-process tests in a few
places. Very rarely is there a feedback
loop. We often, if you don't feel happy
about something, we throw it out.
There is
raw material testing. While the steps
here are all about the chemistry, and this is about the physics, most of our
specifications are around the chemistry, even though we really do physics
afterwards. That's one argument.
The other
argument is saying, given this process flow, where is my time being spent? And so let's draw that same process flow
diagram in time, and you'll find here is where I'm spending my time, and here
is where spending my time. And the actual
process, as you saw on the previous slide, takes a lot less time than the testing
itself.
Let's
look at another process, so that we make sure that I'm representative, and this
is the benefits of being in a consortium.
Looks very similar, testing.
Missing here, a lot at the end.
You then say, let me open that up in time, and then you see time, and
you see 60 days for just the physical formulating part of it. You see a lot of that in testing. And then you expand that out and say,
"Let's include the API, and let's look at the time from the beginning to
the end." And then you say,
"This is close to half a year now."
Now, if I
was making potato chips and it took me about half a year from the beginning to
the end, I don't think I would like what I get at the end. But if it's tablets, I think clearly we have
different kinds of time dimensions.
But
somewhere along the way there's an opportunity to look at time. And half a year may not be necessarily the
place we want to be, but let's look at the drivers behind the time. And before that, let's make sure we look at
complex and liquid products, so that you are convinced that we have looked
beyond a few examples.
Here are
examples of the QC time, which is the process time, in a liquid line. Here is the sterility test that totally
dominates the time. And here is the
testing time versus the process time, and if you were to summarize them all, in
red are the testing times, in blue are the process times, six examples. Do they look similar or do they look
dissimilar? The reds look very
similar. The red looks very big.
Now I
began to wonder whether I should have called in the MIT Pharmaceutical
Manufacturing Initiative or the MIT Pharmaceutical Testing Initiative, because
it seemed like all the time was being spent in testing. But is it just testing? What are the drivers behind that testing is
the next question, because we've got to understand why.
And if
you look at the drivers under that testing, you'll see in green is the process
itself, and here is the actual test itself in blue. But all the red are the manual transfers, the interruption of the
process, the securing of the samples, the documentation, the transferring to
the lab, the testing at the lab, so-called non value-added processes.
So if we
were to develop technologies, it doesn't matter whether it's LIF or NIR, what
is it that matters? If it's LIF or NIR,
it would only impact this part of it.
What really matters about any technology that we would develop is the
word "on-line" rather than the words "LIF" or
"NIR", because those are the ones that drive many of these paper
operations. There's an investment we
have to put in place to get there. It
seems like it's quite a doable task. It
seems like many of the technologies are very much in place.
If you
then broke that detail down further, you would find that the actual test itself
takes 2 percent of the time, and it's the paper aspects of the preparation
before and after that takes 98 percent of the time. You've then got to say, what is the technology opportunity to
deal with these, too? And that will
come along the way, but that is surely not the high leverage place at this
time.
If we
were to now summarize what did we learn here, quality testing is discontinuous;
testing times are large; testing times are more than the process times; and
it's the off-line nature of the test times that drives the overall time. The word "on-line" is a very
important part of what we want to do.
Obviously
we want to look beyond the average, and that's where the learning is going to
begin. So let's look at those same
processes that I just showed you, those six, and start looking at different
aspects of the time rather than some average number of that time. And you will find that all times are not
created equal, and you will find that while you will think your cycle times
were 25 days or 30 days, and that's the one I showed you, there is another
cluster of batches here in different colors that are totally different from
everything else.
These are
the so-called exception batches or variance batches. And all of a sudden something happened, because you did just
three runs, maybe, to some extent; because there's a paper trail, there's a
lack of access to all information in the same place. You now have to find out why you had that exception, and you have
to have the same amount of rigor whether you're going to use it or throw it
out.
You now
have to say why you got an exception, you've got to say which lots it happened
to, why it happened and what is the probable cause, and there's a significant
additional time taken for that. And as
I looked at that, I said, "Okay, it was the Pharmaceutical Manufacturing
Initiative. Maybe it should have been
the Pharmaceutical Testing Initiative.
But maybe it really should have been the Exception Explanation
Initiative, because the consequence of explanation initiatives shows up in the
"So what?" category.
If you
look at all these times on average, and you look at how much of an impact does
that make, you say the average cycle time is about 100 days; the cycle time,
standard deviation, is 100 days, which says if you're talking about 6 sigma,
that's a lot of cushion that you have to build in. And exceptions increase variability by 50 percent, increase
variability by 100 percent, on the average by 50 percent.
So when
you told the vice president of manufacturing, "Just don't screw
up." "Don't come in the
way." "Never have too little
inventory." "Don't stock
up," what does he do? He builds a plant about 10 times bigger than
he needs, about two years earlier than he needs, and he deals with the
consequences for the rest of the 12 years.
And as we measure the numbers, they show up in these places.
We need
to have a fundamental technology: one,
on-line sensors, but not only just LIF and NIR, but a way to look at these
exceptions in a systematic way, and that's the next technology opportunity as
well.
Let's try
to look at asset utilization numbers in a manufacturing sense, very similar to
what I showed you, so that we can understand where the time is being
spent. Just like we said "So
what?" around on-line technologies, we said "So what?" around
routine manufacturing.
Again,
since we have a consortium of companies, we collect from the batch records all
the detailed process steps, and we capture all the time spent in every batch
for all the batches ever made, and we figure out how much time is spent by the
operators versus testing, versus non valued versus value-added, and here is the
first process that I showed you in terms of its time.
We
started this batch, and we say, "Let's start pharmaceutical manufacturing
given a start date, we're now in the market, and see where is the time being
spent." And you can see the
physical product, which is the round product right down here, and the paper
product which is the square product going along with it, the so-called batch
records. And you can go inside any one
of these steps and you can say, "Where is the time being spent?"
And you
can say very quickly the physical product goes through, the paper product takes
a long time, because somebody has to sign, has to figure out that they did what
they're supposed to do, and the technology opportunity there would be the
electronic batch record opportunity.
That's number one.
We can
now go inside the lab and figure out what tests we do, and we can say here are
the different tests we do, the appearance, color, fill weight, and these are
very solid, nice tests that have been in place. And we look at the bottom line drivers within those tests, such
as the assay test, and you can find that it's the on-line nature of those tests
that is going to impact those tests, and you can see that many of the paper and
physical aspects of it drive today's performance.
As I
started this simulation in the beginning of June 1997 in this case, let me
figure out where I am, because if I got a batch at the end, I would get a
number bigger than zero. It's about a
month now, and I haven't got a batch out of the other end. Let me try to figure out where those batches
are.
DR.
WOODCOCK: Can you clarify, these are
real numbers?
DR.
RAJU: Yes, these are real numbers.
DR.
WOODCOCK: From a real manufacturing
plant?
DR.
RAJU: That's right, yes. These are real numbers from the actual
manufacturing plant.
And you
can see that we just got our first batch out and approved. In the meantime we're collecting finished
goods inventory at the end, based on the real numbers, and we're trying to
figure out why is that inventory being held up there, and it's being held up
and it's growing, and we're now going into July and it's a month since we
started.
And let's
try to figure out why those batches are sitting there, and so let's go and
figure out what's happening that might make them sit there. And you would go inside, and you'll find
that there is an exception here that's waiting to be decided on, and unless
that information process can end up with a result, the physical processes are
all waiting for the information process because they have been disconnected.
There's a
technology opportunity here that has not been addressed. Why?
Because it's so difficult to talk about. Exception represents what we didn't necessarily know, what
happened that we didn't anticipate, what happened that may be different from
what we thought should happen for the next 12 years, and now you have two
multiple organizations getting together, saying, "What should I do? Where should I sign? Who should sign, and how long should it
take?"
And where
the information is not necessarily there, it's difficult to do. There are legal, social, political
consequences. What do we do? We wait, and waiting costs money. It costs money because I'm going to have to
find out a few months later what I did and how to connect these two things, and
that's the finished goods inventory, tracking up.
And if
you were to now say, "What is the finished goods inventory," you will
see a huge number. They are waiting for
the decisions. Not only are you waiting
for the decision on that, but you're waiting for the batches soon after that,
because you want to be confirmed about why there was an exception.
So this
would be the third technology, and the result of this is a capacity utilization
that is extremely low. I would say that
many of the numbers that were discussed in the section before us are really not
that far away from reality.
We have
to find a way to remember and agree that we really make two products: a physical product which is a tablet or a
capsule that has great cost benefit to society and is used for patients, and I
think that's one of the greatest things that the pharmaceutical industry has
ever done. It's much better than all
the other alternatives.
But we
make another product, a so-called documentation, information product, and that
second product has its primary customer, we think, for the FDA, but it has a
lot of information and a basis to look at exceptions. And I think working together with the FDA around that technology,
I think can fundamentally change pharmaceutical manufacturing as well.
Coming to
the end of my talk, I said we got together, said we want to find a way to win,
and we had a large number of vice presidents who decided that there was a way
out. We've looked at technologies for
all the aspects that I've told you about.
We've carried out different aspects of these technologies in different
places for different products, in different parts of the product life cycle,
and we've got some really exciting data, and we've called this initiative
Continuous Quality Verification.
And we
say that we have many pieces of the puzzle that we think can become part of a
transformation of this industry. We
have got an understanding of the needs.
We have some of the best universities in place. We have presented this to the Division of
Pharmaceutical Sciences and the Advisory Board. We have got a very favorable response. We have now talked within CDER to a number of people. We have gotten really excited.
If you
remember, I showed you that slide that said, "We want to talk to the FDA
at some time." In the last three
or four months we've been talking a lot, and we've been very impressed with the
openness and the awareness and the good intentions of the people that we've
talked to. This is today. This is the Science Board. And as we go past this and we go forward,
somewhere along the way we want to be able to also talk to the investigators
who might be behind the curve in some of the new technologies.
And this
is where we're headed. To summarize, we
think technology, when you come back to science, understanding of the needs, we
have put together a place where it could be a huge win for the industry, the
FDA, and society. But we can only
capture this potential if we win together, and we really mean it. And I think if we don't, we're all going to
lose, and it's very, very likely that if we leave any one of the wins-wins out of
the three wins, that we will be doing this and saying the same things 50 years
from now. Let's find a way to all win.
Acknowledgements: The consortium itself; two colleagues of
mine, Professor Charles Cooney and Professor Steven Byrn. And particularly relevant for a presentation
such as this, these are my personal opinions and nobody is liable for them
except me. Thanks.
DR.
WOODCOCK: Thank you very much. I think I'll turn it back over to the Chair
for a break.
CHAIRMAN
LANGER: How long a break would you
like? 10 minutes, 15?
DR.
WOODCOCK: Ten minutes.
CHAIRMAN
LANGER: Why don't we take a 10-minute
break, then?
DR.
WOODCOCK: Thank you.
[Recess.]
CHAIRMAN
LANGER: If everyone would be seated,
we'll get started again.
DR.
WOODCOCK: Our next speakers are from
the industrial sector. Dr. Norman
Winskill and Dr. Steve Hammond are going to be talking about quality regulation
from the pharmaceutical manufacturer's perspective.
DR.
WINSKILL: Good morning, everyone, and
thank you, Janet. It's a pleasure to be
here this morning to give you an industrial perspective on what I think is a
very important and a very timely topic.
As you
can see from the slide and as Janet mentioned, we have a double act from
Pfizer. I'm Norman Winskill. I'm going to be followed by Steve
Hammond. We're going to share the
presentation between us. One of us is a
pharmaceutical technology expert and the other one isn't, and I'm the other
one.
[Laughter.]
I'm not
interested in the technology per se.
I'm interested in what the technology can do for me. So I'm going to try and explain a little bit
of that, and Steve will concentrate on the technology itself, and then we'll
come back together and see how we put the two together.
So, just
running through the order of what we'd like to cover--actually we have the
wrong presentation up here, I think. Do
you have another presentation that we--
DR.
WOODCOCK: A shorter one?
DR.
WINSKILL: The title is right, but there
was a long version and a shorter version.
Sorry, you'll have to give us a moment or two. We have to switch computers.
CHAIRMAN
LANGER: While this is happening, are
there any questions anyone wants to ask?
DR.
WOODCOCK: David Feigal had some
information on recalls in the device sector that might be germane to this.
DR.
FEIGAL: One of the questions that was
asked before is, how many recalls are there?
And in the device area there are about 1,000 recalls a year, so if you
figure there's approximately 200 business days in a year, that's about five recalls
of products per day.
There's
about 80,000 products on the market, or 80,000 actually types of products on
the market, so if you look at the number of products newly approved each year,
which is sort of another sort of metric, there are about 7,000 products
approved each year. So it really isn't
anything that approaches 6 sigma, if you do the math.
Now, many
of the recalls actually probably have more economic consequences for the
company than public health impact.
About half of them are the lowest class recall, where there is something
about the packaging or the labeling or some other type of issue that is a
significant cost to the manufacturer but there's no health risk associated with
the problem.
But there
have been some fairly important recalls that actually happened due to
manufacturing problems in the device area this year. Probably one that's still getting quite a bit of publication is
the Salzer hip implant, which actually threatens the viability of that whole
division of that company, which I think the company's theory still is that that
was a problem with leaving a bit of residual oil on the surface of the hip
implant so it didn't seat properly and it would loosen, and that has been a
problem.
But there
also has been a worldwide recall of ceramic hips, which fractured when there
was a change in the manufacturing method, in the type of firing and heating of
the ceramic material. So, although most
of the recalls are in that low-risk category, there are important examples of
products that are recalled where there really are not only quality problems but
there are health implications for the patients, as well.
DR.
WOODCOCK: Other questions?
Are you
about ready to go?
DR.
WINSKILL: Yes, we're ready. Sorry about the delay.
So what
we'd like to do in the next 25 minutes or so is give you a very brief history
of the evolution of process analytic technology--I'll refer to it as PAT quite
often--and also our vision for the future.
I'll then hand over to Steve, who will describe some of the specific
applications that are of interest to us right now and how we might use those to
improve our process knowledge and control of our processes. I'll then come back and describe how we
might introduce some of those technologies or how we might now introduce them,
and what sort of environment we could create to make sure that we do introduce
them appropriately and use them appropriately, and that's referred to as
"the win-win scenario," and I'll describe what that is.
So first
a quick overview of the evolution of this technology within Pfizer. A lot of the examples I will use are
obviously taken from Pfizer. I decided
to use specific examples rather than hypotheticals because I think they
illustrate the point. I don't apologize
for using Pfizer examples. I think it
is essential and probably necessary to see specifics, but I don't try to claim
that what we are doing is anything different from what a lot of our colleagues
in the industry are doing, and I think it's fairly representative. But rather than hypotheticals, I decided to
use specifics.
We
started looking a process analytical technology, particularly near infrared and
mass spectroscopy, in the mid-'80s, early to mid-'80s, and we were looking at
control of fermentation processes. That
proved very useful, and we quickly developed and applied the techniques to
other processes, particularly near infrared.
So in the middle to late '80s we expanded the use of near infrared to
synthesis operations, raw materials, packaging operations.
And at
this point the application in drug product manufacture, which is what we'll
focus on mostly today, was really for a troubleshooting mode. However, in using it for troubleshooting, we
found it gave us an awful lot of information we didn't previously have and that
conventional tests didn't have.
So at the
beginning of '90 we created a dedicated group--and we called it the NIR Group,
and it was headed by Steve, who is coming up next--specifically to spread the
word and to develop applications and put them into our processes to enhance
process knowledge. And so that
dedicated group was formed.
At that
point in time it was very difficult to go and buy instruments off the shelf and
apply them to the production plant, so a lot of what the group did was
develop--not only work with vendors on the instrumentation, but work on a lot
of the engineering solutions like sample presentation, automation, and
robotics, and that was essential to enable us to put near infrared and other
techniques into the drug product plants.
We did that in quite a big way in the early '90s. I think I'll show you some of the
applications that have ensued from that.
Later,
and probably for the last five or six years, I think, other techniques have
emerged. Near infrared is still
important, but as others speak, as they have emphasized, it's not just near
infrared. It's not a panacea. So LIF, mid-IR, acoustic, and a whole range
of other, Raman techniques, are now being studied and they are increasingly
being applied.
So, given
that evolution, where are we today? And
this is just a summary of some of the applications that we have in commercial
use on our drug product plants around the world, and it's in chronological
order, and you can see that we are using it actually in a commercial
environment, everywhere from the beginning of the process, raw material testing
and release, evaluation of packaging components, blending, tableting,
encapsulation, tablet coating, packaged product. We can actually scan tablets in a blister pack, not just to make
sure that the tablets are present, but we run a spectrum on the tablet to make
sure it's the right tablet in the right pack.
So quite an extensive use, and then at the end of the process we use
different process analytical technologies to help with cleaning verification,
to ensure everything is ready for the next step.
There's a
footnote at the bottom I think that has been referred to. Janet referred to it at the beginning. Interestingly, I think there are over 30
discreet applications in use around the world, very few in the U.S., less than
15 percent.
And I
think that's not atypical of novel technologies in general. Process analytical technologies is a model,
but I think if you take any of the new technologies we've looked at--microwave
drying, automated guided vehicles, you name it--it tends to be evaluated and
implemented and shaken down overseas, and it takes a long time before that
technology is then brought back into the U.S. or used to make products for the
U.S. market. And I think a key question
is, why is that? Is that the right
environment? And if it's not, change
it. So we'll talk a little bit about
that.
So that
was the current state of process analytical technology. What does the future hold? Now, this is obviously a personal vision, and
the future for me is about 5 to 10 years in this example, but I think we will
see a significant increase in the number of applications. I think we will see a broadening of the type
of applications--Raman, light-induced fluorescence, etcetera. Acoustical is increasingly used to hear
what's going on in the processes, gives a lot of information.
I think
what we will see, and what will help spread this technology throughout the
industry, is the availability of off-the-shelf solutions from vendors. Right now a lot of us have to develop our
own engineering solutions, and go in and, like G.K. showed, adapt them onto
blenders to use them. I think that
within five years we'll see them being offered by the equipment manufacturers
as an option, and that will increase the utilization tremendously.
The other
thing I think we'll see, what I described on the previous slide was a lot of
individual steps that are being controlled.
I think where we are going to is to see all of those steps integrated so
we control the whole process. Instead
of doing conventional control up to one step, and then we have a nice process
analytical technology on-line to control, for example, blending, and then we
take it back into lab-based testing for the rest of the process, we'll integrate
the process from cradle to grave, so it can operate at a fast cycle time with
tremendous process knowledge which we don't have today.
So our
vision of the future is--and this is a pictorial representation of what others
have described--moving away from discrete unit operations with laboratory-based
testing at the end of each step. And
the reason we often wait for that laboratory testing is that if we proceed to
the next step--which we can do, there is no regulatory reason why we have to
wait for the result to proceed to the next step--but if that laboratory result
comes back, and it's our only information today, if it comes back and says
there is something wrong with the blend, it's not uniform, if we've taken it
through to a tablet, there's a huge cost involved in having to go back and
reprocess that, or if there's no rework option, throwing it away. That's the scrap. So it's risk management that forces the long cycle times and the
discrete unit operations with lab-based testing at the end of each, not
regulatory.
Where we
want to get to, and the vision for the future, is what I think G.K. called
continuous process verification:
continuous, more frequent, more meaningful on-line analysis at every
step of the process, so we can proceed to the next step of the process knowing
that what we did before was compliant and of correct quality. We don't have to wait six hours for a
lab-based assay. And that is the sort
of manufacturing paradigm that we're trying to evolve to in the not-too-distant
future.
What are
the challenges in getting there? Some
of them of course are technical.
However, I think the progress that we have seen, and Steve will describe
a little bit, is sufficient that it really is not a significant barrier at this
point in time. Technical issues can be
overcome.
We have
made considerable progress in the areas of chemometrics, robotics, the
industrialization of instrumentation.
Yes, there are still some opportunities, and probably more significantly
I think in the development of faster, smaller, cheaper instruments, so they can
be put in more places more often, and probably still some work to be done on
the sample interface, how the instrument interfaces with the sample, and how
that can be an off-the-shelf solution.
But I
think there are solutions to those, and I think that's not a hinderance right
now to the widespread application and moving towards the paradigm I described
on the previous slide. And maybe the
major hurdle for the U.S. right now is the real or perceived regulatory hurdle,
and maybe it is more perceived than real, and we'll come back to that at the
end.
At this
point I'd like to hand over to Steve, who will describe some of the particular
applications of interest, or the ones that we are particularly interested in, and
then we will come back and talk about implementation.
MR.
HAMMOND: Thank you, Norman.
I just
briefly want to go through three examples of where installing PAT, this is
being driven, the latest advances in this are being driven by a new potent API
that we're dealing with, and we've had to look a systems that are totally
automated and work in a containment facility where just can't have plant
operators even sampling blenders or even sampling off the tablet presses. So we developed a system, and I'm going to
start with on-line blending, we developed a system that uses a battery-powered
radio communicating spectrometer. It's
very small, fast diode array instrument.
We actually mount this on the moving blender. We control it and collect data from it remotely in another room.
This is a
schematic of the installation that we've just finished performing in our plant
in Brooklyn, in New York. The blender
is contained in a separate room. There
are two containment barriers you have to go through to get into that room. So we have the NIR mounted actually on the
blender in a separate room, and our PC controlling that system is actually out
in the corridor in this instance. When
this gets to a full manufacturing plant, there will actually be a containment
area again for the blender, and the control of it will be in a specialist
control room adjacent to that particular room.
For this
example I'm going to show you now, the point is that the PC driving the
spectrometer and where the data processing is done is some 25 feet away from
the blender in another room. This is
what the full GMP installation looks like, and you can see that there are two
blue boxes actually mounted on the blender.
So everything that's back to the right-hand side of those two blue boxes
is stationary. What's to the left of
the two blue boxes all rotates.
The top
box is actually the box that contains the battery and radio-communicating
modems. They are what is sending the
spectra, once we have collected them, back out to the PC which is outside the
room. The bottom box, the bottom blue
box, the smaller of the two, is actually the spectrometer. It's a solid state instrument, so it can be
put up with being spun round as the blender moves.
The
business end of this is actually the thing that looks like a black cylinder on
the bottom of the bin, that's actually shining the infrared light through a
window we put into the lid of the IBC, and it's collecting spectra when the bin
is inverted. We have some gravity
switches that only fire the spectrometer when we know the blend has fallen down
against the sapphire window mounted in the lid. The spectrum is collected with the fiberoptic that goes from that
reading head on the bottom of the bed back up to the spectrometer.
Now,
Norman talked a little bit about the design of the sample interfaces, and with
this particular application it's very important, because what we need to do is
to collect the spectrum from a known amount of material, and that amount of
material must be something that is, in terms of unit dose, reasonable. So we've done a lot of work in designing
this reading head, that we collect the spectrum of between 200 and 300
milligrams of sample. We've done a lot
of work in looking at depth of penetration, density of the blends, and how much
sample actually contributes to the spectrum.
I've seen
a lot of publications recently on doing on-line blend analysis using near
infrared, but this fundamental thing of how much sample actually contributes to
the spectrum is critical in getting these systems to work and give you
realistic answers that you can match to off-line HPLC, and the design of this
head allows us to do that. We
illuminate an area of some 3 centimeters, a circle 3 centimeters across, with
the right intensity to get depth of penetration of about half a millimeter, and
we know we collect information from the whole of that sample. So it's very controlled in how many unit
dose weights are we seeing.
The sort
of information that we're looking to get, the plot on the left shows you the
near infrared spectrum of ingredients in a simulated blend that we used to
commission this piece of equipment. We
couldn't actually use the active because it is a Class V material, so we
substituted that with saccharin, which is innocuous but has the right sort of
near infrared spectrum to compare to the active we would have used.
What you
can see here on the left is the spectra of those pure ingredients that we
scanned before we started the exercise.
The change in pattern you see on the right is the movement in the
spectrum of saccharin at a specific aromatic absorption for that molecule. That is what we try to do, we find specific
absorptions for these molecules and watch the movement at those specific absorptions,
so we can track just that one ingredient.
But we
don't just focus on the active, we focus on every ingredient in the blend. We look for the specific parts of the
spectrum where the movements are really reflecting that ingredient in the
blend. So as we run the blender--and
this is the first stage of the exercise that we did, this ran for 15
minutes--we can track the change in absorbance for each ingredient.
And there
I'm showing you the change in absorbance of saccharin, which was our active in
this case, and lactose and Avicel, two other ingredients in that mixture. So we can track this. As the curve comes down to the bottom and we
finally flatten out, we know we've reached the end point of blending, but we
can watch the end point of blending for the active and for the other two ingredients
in that blend.
Now, to
turn that into the normal sort of measurement that we would look to make on a
blend, content uniformity, what we do is to take the spectra we collect in
groups. The blender was actually
rotating at eight revolutions per minute, so what we've done is collect eight
revolutions, or the spectra we collected from eight revolutions together, and
then calculate a variance across those eight points.
And this
is mimicking taking eight samples from the blender into a laboratory, doing
HPLC analysis on them, and calculating the content uniformity. So this is a variance measure, so the Y axis
is the variance across eight scans.
Along the bottom we're plotting time.
So what we can see is the movement in essentially content uniformity for
the ingredients in that blend, but not just the active, all of the ingredients.
There's
one big advantage to this technology.
It is gaining more and more process understanding. The other things that have been talked
about, cycle time, are obviously of value, but one of the big attributes of
this is the amounts of process understanding that you can get, and plotting the
uniformity of all ingredients in a blend is one of the key gains in this sort
of technology.
And
really to illustrate that, I want to show you the second step in our
blending. Once we had blended the main
ingredients, we did the normal thing you would do, which is then to add a
lubricant, and we blended that. What
you see here is the change in uniformity of the lubricant as it's added to the
second stage of the blend.
So with
this system we can, in real time, watch the mixing of all the ingredients, look
to see when the blending is done, and for the high potency--the product we have
to make in a containment facility, we will develop specifications for the
amounts of variation that we will allow in the spectra, and that will be
validated against conventional HPLC measurements.
The value
to us in that on-line blending system, where we have a new product that must be
made in a containment facility, the major benefit is no operator contact. Robots will load the bins into the blending
area. the near infrared will be placed
onto the bin using robotics.
Measurements of blend uniformity will be performed in that room, but the
data will be transmitted into a control room, so we can avoid operator contact
with that product altogether.
There are
other benefits. There is no sampling,
there is no sample thief error. We get
real-time information, which can help recycle times. We get these multi-ingredient uniformity measurements. We gain a lot in process understanding. We can actually fingerprint the
process. We know that those curves I
showed you, you can actually change them by the order in which you load the
bin, so we can fingerprint even the way that you load the bin and what impact
that has on blending. And what this
really comes down to in the end is the objective to go to "right first
time" manufacturing.
I just
want to now show you the sorts of things that we're doing with tablet core
analysis because, as Norman said, we're trying to look at cradle-to-grave
control of the manufacturing process, and one of the key steps is obviously
monitoring what you're doing when you're making or pressing tablet cores.
This
really started in an at-line situation in our manufacturing plant in
Australia. These people you see there
are the plant operators, and they are people that have been using near infrared
in that production plant to look at tablet cores and actually at-line, looking
at blends as well.
What I
want to focus on is the fact that about once an hour those operators go to the
tablet press and they take a handful of tablets. They go to the near infrared and they test content uniformity and
potency of those tablets. They do that
by passing near infrared through the tablet as a bulk measurement, which means
that we do capture everything that's in that tablet and we're not subject to
variation at the surface, which can be a problem in some measurements. So we see everything there is to see in that
tablet.
Just to
illustrate the information value of that, this is a product that was
manufactured in the Australian plant, and the conventional analysis suggested
there was a problem with blend segregation, maybe, during the process. Using near infrared and looking at 300
tablets across that batch, rather than just 10 tablet as we would
conventionally test, allowed us to pinpoint exactly at what point in that batch
there was a problem, and then it became very simple to cure it because it was just
a transfer chute that was causing some segregation in the blend. But the extra information that you get from
using these sorts of technologies to get analysis of 300 tablets a batch rather
than just 10 or 20, really allows you to get to grips with that sort of issue
very quickly.
The
at-line system I've shown you is fine for most of our products, but with this
high potency product that we're going to introduce, we needed to take that
further, and we've needed to automate that near infrared testing. And what we've done now is to design this
unit, which actually takes the conventional weight, thickness, and hardness
modules that are very often at the side of a tablet press, and then introduces
near infrared transmission capability into the unit as well.
So
tablets feed into this box, they are weighed, they are scanned on the near
infrared, and then they go back to be measured for thickness and hardness. And this is actually at the tablet press. It's fully automated. We're actually having two companies make one
half each of this device. Bruker are
doing the near infrared side of this instrument, and a company called
Schleuniger Pharmatron from Switzerland are making the other half of it. But it is to be a totally integrated device.
I just
want to show you some of the spectra behind using a device like that. This is actually spectra of this new high
potency product that we have. The black
line that you can see there is a placebo tablet, and then the colored spectra
are tablets of different strength of that product. So you can see that we have specific information about the active
if it's present in that product, and changes in concentration that we can
actually measure from that spectral information.
We can
use that spectral information to compare HPLC values for single tablets against
the value that we would get from the near infrared based on the spectral change
that we see. And what I'm showing you
there is the correlation between spectral information and HPLC, but what I want
you to note is the concentration in that product. This is from .1 percent to 2 percent, so this measurement is
extremely sensitive if it's set up correctly.
I want to
finish by describing some work that we've been doing introducing microscopy to
look at pharmaceutical formulations.
What I'm talking about here is to look at a blend, but not as a bulk
measurement, but actually to get in there and have a look at the matrix of the
blend close up, and to do the same with a tablet, to get in and actually look
at how each of the ingredients are lying alongside each other, and how do we
actually make a tablet matrix.
The way
we do this is to take an area of a tablet, usually about 2 millimeters by 2
millimeters, we take each of the pure ingredients that we manufacture the
tablet from, and we collect their spectrum and we file that into the computer,
so we have the spectrum of each pure ingredient.
And then
that 2 millimeter area of the tablet, we divide it into squares, usually around
10 microns by 10 microns, and we use a microscope to collect a spectrum from a
minute piece of that data matrix. So
each square is scanned in turn, each square of about 10 microns, and we collect
a spectrum of that square using a microscope.
Then we match the spectrum that we get for each square against the
spectrum of the pure ingredients.
So what
we can do is to take each square and color it in. If we find the active, we usually color it red. If we find Avicel, we'll usually color it
blue. Disintegrants, we usually color
them green. But we can build up a color
map of the matrix of the tablet at a microscopic level.
This is
just one illustration of the sorts of information that you can get from doing
that. This is an example of two blends
of the same product. One blend would
flow correctly into the encapsulation machine; the other blend would not flow
correctly. The microscopy information
revealed that in fact our lubricant was clumped in the bad-flowing blend and
nicely distributed in the well-flowing blend.
In fact,
it was interesting, the plant manager when we showed him this information said,
"Yes, that's exactly what I thought it was." But at least you can go back and get good
scientific data on exactly what is causing that sort of problem, using
microscopy.
Here is
another illustration of a product that occasionally suffers sticking problems
on the tablet press. We analyzed matrix
using microscopy. You can see there is
a big difference in the way that that tablet matrix is actually sticking
together. And what I'm showing you here
is the mixing of an inorganic diluent with one of the carbohydrates that goes
into that formulation.
In fact,
what microscopy has shown us is, if those two ingredients mix together really
well, we actually get a slightly weaker tablet that has a tendency to stick to
the tablet presses. In fact, you can
track back and explain what that difference is. It's a difference in the particle size of the sugar, the
carbohydrate that's fed into the process.
By controlling that particle size well, you can avoid this problem, but
only after you got the information to explain what the problem was could you go
back and cure it, and microscopy really has an enormously powerful contribution
to make to explaining process problems.
Up to
now, getting that sort of data has taken a long time. Most of the maps I've shown you, our spectrometer and microscope
have to work very hard for up to 24 hours to make those maps, because there are
about 8,000 spectra in each of the maps.
But just recently imaging systems have started to appear that can
actually collect the same information in about 10 minutes.
We're
hoping within a few years to get these systems so fast that we could take the
spectrometer I showed you on the on-line blending system off, and actually put
an imaging camera there in place, so we could image the blend as it's
mixing. And the sort of information
that we should get from doing that should improve our process knowledge orders
of magnitude beyond where it is at the moment.
I'm now
going to hand back to Norman.
DR.
WINSKILL: I'll finish up very quickly
here, but I hope you got a sense from what Steve has described, that we are
quite excited by the additional information we can obtain on our manufacturing
processes if we can get this technology into the plant routinely. And we think we can, and we think it can be
part of the vision I described earlier.
Certainly
the technical challenges I think we can overcome. I think what might influence the speed at which it's rolled out
and the general acceptability of the technology might be the real or perceived
regulatory hurdles. And history has
taught us over these last 10 or 15 years generally about the introduction of
technology, that it may not be as smooth as we would like to see it.
In fact,
I'm going to describe three possible scenarios, all real life examples that
we've lived through. One I will call
the "don't use" scenario. The
"don't use" scenario is a worst case.
These
technologies are not used or developed during the product development basically
because of our fear of delays in the regulatory approval. We don't want to put novel technologies into
an NDA.
Once
we've transferred a process with its controls into production, there may be a
tendency not to want to "waste" resources to develop duplicate methodologies
and controls when the existing ones work okay.
And,
quite frankly, there may be a concern on our behalf of raising the bar. The more information that's available on a
process could possibly be used inappropriately against us, and that's a genuine
concern.
The
problem with that is, if that leads to the technology not being used, I think
we all lose. And there is a whole body
of information that's just going to remain unavailable to anyone, and that's
not a healthy situation.
But
again, I said I would use real-life examples.
This is a real-life example of "don't use." It's taken from one of our recent
products. It's an antifungal polymorph.
Conformation for this product was key to the product attributes. During the development, we developed and
looked at two different methodologies to conform, to confirm the polymorph,
powder x-ray diffraction, obviously a well-established technique but not common
on our manufacturing plants to QC labs, didn't exist at the site of
manufacture. So the only way to confirm
the right polymorph was to send a sample 3,500 miles and then wait about a week
for the result to come back.
We
developed an alternative, near infrared, common in the lab, available at the
site. We could get results within
minutes, but it wasn't a standard technique for polymorph conformation. Our initial draft of the NDA included both
methods, but our fears and our conservatism made us take the near infrared out
of the NDA because we were fearful of questions and delays, and so right now we
have the method on the left, and we send samples across the Atlantic, and we
don't use near infrared, not a very healthy situation.
The
second scenario is "don't tell."
Under this, we want the information so much, we use it but we don't
register it and we don't openly talk about it.
So we have one set of methodologies that are in the files, and these are
used for regulatory approval, and we conform to the specs, we conform to the
dossiers. But in addition to that, and
in addition, not instead of, we use all these model techniques in parallel, and
really we operate in two parallel universes.
We have a regulatory universe with old-fashioned conventional
technologies. We have another universe
that really is the one that counts, but we are afraid to share it.
Another
real-life example, and this goes back to, I started life with Pfizer more than
25 years ago in the fermentation area.
That's where a lot of the near infrared came from. On the left, you don't need to read that,
it's an eye test, but on the left there's three or four registration
specifications and control methods which are fairly conventional, lab-based
assays, 12-hour turn round time, and that is still the case.
Today
that's the registration method, but over 20 years we've developed a whole set
of advanced near infrared, mass spectroscopy, and probes, on-line probes that
we really use to control the process.
And basically we, as I say, operate in a parallel universe.
The
conventional methods work. They give
product that will conform and is fit for its intended use. There's no question about that, and then
final end product testing is the gatekeeper to make sure of that. But it's inefficient, and really the
advanced control and the reason we are prepared to duplicate the universe is, we
get much better batch-to-batch consistency, less impurities, fewer byproducts,
less rework, etcetera, etcetera, all the advantages we talked about earlier.
We could
take this slide from this example and, I think, apply it to today's situation
for drug product manufacture. I think
the universe for fermentation control has evolved significantly from a black
box art 20 years ago, to a very highly controlled environment with dual
networks and advanced computer control, using this information to give us assurance
of quality.
We're
nowhere near there on drug product, but we could be. And we have to find the right environment to get there, and I
think if we could, that's the win-win situation we're talking about. So that's a description of the win-win
situation. I mean, we don't need to do
the parallel universe and the duplicate testing.
What will
it take to get there? I think basically
it will take an environment in which the methodology is understood and accepted
by regulators and industry alike. We
have the same information, the same concerns.
We see the same opportunities around the use and application of this
technology.
We are
certainly not there yet. I think we're
making a lot of progress, and I think today's meeting is a good example of
that, but we have a little way to go.
And really what we're trying to do in this is, we're dealing with, we're
removing the real or the perceived regulatory hurdles.
And I
think to do that, we need--and these are personal suggestions on how we can
create that environment--I think joint forums to openly discuss the technology
and openly discuss the issues and concerns and describe the technology, I think
goes a long way. And I know Dr.
Hussain, Ajaz Hussain and others, have believed very strongly in this and are starting
to do that, and that's encouraging.
I think
we need to create an effective process to evaluate these technologies, for
example, PAT. And part of that, I
think, and maybe the root of it, is appropriate guidelines for the development,
for the implementation and the validation of these methods, scientific-based
guidelines that we can follow and we can understand, and then you can measure
us against. Absent that, it's down to
personal interpretation, and that's where our perceived fears some into how it
might be interpreted differently by different people.
How can
we do that? Well, obviously we can
sponsor joint forums, I would suggest industry/FDA forums, to work up some
guidelines. I think we have to
recognize that process analytical technology is different from lab technology,
and you have different expertise that need to be at the table to develop those
guidelines, people from the process control, instrumentation side of the
industry.
Another
suggestion is to participate in "dummy runs." We have introduced a lot of these
technologies. We don't do so without
appropriate internal controls for development and validation and
implementation, and we have them. We
have SOPs for all of that. Like I say,
we don't share them because it's a parallel universe in most cases, but we
would be willing to share them, and we would be willing to make some dummy
submissions. We will submit some
methods that we've developed to see what you think of them. We will submit the controls and the
methodology and the SOPs we have used, to see what you think of those.
Quite
frankly, I call it "dummy" because we will submit things that are not
linked to an NDA approval, so there is less risk for us, and probably that is a
way to create a win-win situation. If
that helps to evolve to a set of guidelines that we can all understand quickly,
then I think we'll be better off.
And then
finally I think what's important to us, probably to all of us, is consistent
use of those guidelines not only by Center but by field investigators, and that
will remove an additional concern that we may get approved but we may get
additional questions and a different interpretation of the technology on an
investigation. And a set of guidelines
that we can all--a bible, if you like--that tells us how to do it, that we can
all refer to, and refer to the same chapters in the book, I think will go a
long way to remove those perceived concepts.
So, thank
you.
DR.
WOODCOCK: Thank you very much. I appreciate Pfizer's willingness to come
and talk about these things.
The next
speaker, who will speak fairly briefly, is Dr. Ajaz Hussain from the FDA, and
he'll give the FDA's perspective and some ways that we perceive we could move
forward on this, and then we'll try to save enough time for discussion and
questions.
DR.
HUSSAIN: Thanks, Janet. I did have an extensive presentation, but to
the time, I'm going to cut back. But
when I sort of put together that presentation, I thought I would have to defend
an FDA position: Why do we require
product tests, and so forth? But in
many ways I think the case has been made by others, and I'll use an example to
illustrate some of the challenges from and FDA perspective, and then follow up
with a set of steps that we have taken and we are planning to take, and then
pose the question Dr. Woodcock posed to you at the beginning of the
presentation.
One
aspect which I just want to share with you is, why did everybody talk about
blending? It's mixing of powders. I mean, it's at least a 150-year-old
technology. But for last 10 years we
have been debating that, industry, FDA, so extensively, we probably have spent
millions of dollars just talking about it in workshops and so forth. That illustrates in my mind the state of the
manufacturing today. That's not the only
unit operation. There are a number of
more complex unit operations that we have to deal with, but we are stuck on
blending. And so that is the situation
from my perspective.
Please
pardon me. I'm going to skip through
some of the slides and get to the most important ones which I want to make some
points on. The original outline I had
was to just redefine the emerging regulatory issues, share with you my
perspective, FDA perspective, look at the problems, and see how we can proceed
from here.
The main
issue here is that science and technology is progressing rapidly. It is, in fact technology is not a problem
right now. I think getting it into
practice is.
Just to
reemphasize, I think the discussion topic on process analytical technology, we
use that as a model and initial focus point to facilitate discussion on
emerging regulatory science issues in manufacturing in general, so that was a
model. People have talked about near
infrared and other vibrational spectroscopy methods. Again, as a case study, there are many different technologies,
any different tools, and not discussing those here doesn't mean we are not
considering those.
I think
one major issue I think in my mind is why is FDA leading this effort. But when we started talking about this, the
reactions that we received from industries, "You're going to do what? This is not FDA's role." But we felt it is, and think we have to take
the lead. If we don't do that, we get
blamed for it. I think the one aspect
we keep hearing is, we are the hurdles, and I think our perspective is, we
don't need to--we are not, and we don't want to be. So how do we move forward?
So just
to summarize, we have heard before industry is hesitant to introduce process
analytical technology in the U.S. They
have done it in Australia. They have
done it in other places. It's in
practice. Not in the U.S. The points that are made is regulatory
uncertainty, risk. That leads to
"don't tell" or "don't use" practice. I translate that into uncertainty or lack of
understanding or knowledge of how FDA would assess that, as new technology
leads to new questions. These questions
would be in method suitability, chemometrics.
This is status of pattern recognition and validation of that.
The other
concern we hear is, old product plus new technology leads to new regulatory
concerns which could be added burden, so how to do you deal with that? And clearly a mind set: Why change?
One contributing factor to that is, this, when we bring it to FDA, will
become an additional test. We'll be
asked to do the old method and the new method.
And so
those are some of the concerns that we kept hearing, and we said that's not how
FDA operates. We are more open to
that. Why is this perception out there? And we started talking about this
extensively. Clearly we are approaching
this from a public health perspective, and to ensure high efficiency of the
U.S. pharmaceutical industry from many different views.
Also I
think I'm going to start skipping the slides.
The point here is, we hesitate to improve or learn about our process
during new drug development because we don't have the time. We don't do it after approval.
So when
is the right time for process improvement?
In some cases, never. We have
product, I'll give you an example from a 1997 warning letter. This is a narrow therapeutic index drug
which is used in a controlled release formulation. How are we making it?
Just read this.
XXX, drug
XXX, "time release pellets are prepared by hand-coating powder...This
manual process results in formation of agglomerates and in an accumulation of
ingredients on the sides of the coating pan.
Operators sporadically scrape this undistributed material...manually
breaking up agglomerates...and crushing them during processing." This is, in some cases, the state of the
art, not an example that can be generalized, but this is reality.
Clearly,
the point has been made that regulatory risk and uncertainty is a hurdle, and
we have been working for last several years to remove those hurdles, and there
are significant challenges. I was going
to talk about the guidances that we have already developed, but let me move on.
The heart
of the matter is science. Where is the
science in product development? And
clearly there are trends where we are going from dosage forms to drug delivery
systems to more intelligent drug delivery systems. That is happening, but that has to happen more quickly.
The
molecules that we are developing as drugs are more complex. They need to be managed more carefully. And so design of intelligent drug targeting
systems and so forth is happening, but we are still stuck in a 100-year-old
technology at the same time. The
principles of what we do originated 100 years ago in the art of compounding. In many ways we are still--a lot of those
things remain. Most dosage forms are
complex multi-factorial systems, yet we treat them as univariant or
multi-incident systems where we study them one at a time.
From an
FDA perspective, when we have to establish classification, when we have to
establish controls, what we face is a high degree of uncertainty on what the
impact of independent variables have on performance. So when you want to change something, we have no clue generally
what that impact may be, so the additional tests come in.
So not to
belabor, not to just harp on that point, I just want to move on, but at very
fundamental levels, material science, if you look at polymer science, if you
look at all other fields, do we understand our materials? Not necessarily. In many cases the functional attributes of the materials we use,
the ingredients that we mix in a tablet, are not well understood.
The
official monographs that we have are focused on chemical identity and purity,
and that's probably what it should be.
Defining the functionality of an excipient in an official monograph is
probably very difficult to do and probably not necessary to do, because when
you mix powders, you lose their functionality and you have to really deal with
the functionality of that powder mix.
So doing things on-line, doing analysis for that mix, is more relevant.
So just
I'm going to quickly focus on the current paradigm is testing to document
quality, and predominantly with wet chemistry, and that case has been
made. But that's not what our FDA
policies are. In fact, it's to look at
the guidances and, say, the GMP guideline.
These are the words that we use.
Quality cannot be tested into products, it needs to be built in.
That's
what we say, but we do focus on testing.
And the main reason for that is, if you want to build quality in,
quality has to be built on knowledge, not data, and the level of sophistication
and the details that our data can resolve is either medium to low. So we are in the bottom of there, where
you're looking at historical trial-and-error data to establish specification
and so forth. That is a contributing
factor.
We have
talked about blending. I'm going to
quickly skip through this and say, why are we debating this? What is this debate all about? For 10 years we have debated this, and from
an FDA perspective one could argue it's assuring quality. From an industry perspective it's simply to
document. There is no quality problem
we have to document, and we struggle to document that.
But it is
question of representative samples, and it is an indicator of art versus
science debate, and is illustrative of test versus control mentality. Blending assay that we do in process is
actually a test. You take a sample,
test it. If it's not homogeneous, and
if it don't have a protocol for reprocessing, you would throw away that
batch. If it was a control, you would
blend until it's homogeneous.
Just to
illustrate, from an FDA perspective, why we raise some issues here is, how do
we control the quality of tablets right now? Suppose you have two steps.
You have blending and making a tablet.
You would blend, take 10 samples or 6 samples, and if the percent RSD or
standard deviation is less than 6 percent, it's homogeneous. Then you would make your tablets. And how many tablets do we test for content
uniformity? Ten. If the batch is 10 million, 20 million, that
defines what goes up.
And we
recently did some research in collaboration under a consortium that we formed,
Product Quality Research Institute, and a major company in the industry who did
this work for that thing, sent this data to me. And this was a commercial, is a commercial product. They actually did this test to support the
research efforts that FDA is having, and found a problem in a commercial
product. And the problem was, those 10
tables were not really, truly indicative.
They had to go back and correct that process.
I'm not
going to get into how blending is done in chemical engineering. I was planning to do that, but let's skip to
certain advantages that we see moving towards PAT. You are shifting the paradigm towards feedback control. You are helping to build quality in by
improved and more efficient control of raw materials. You have process data that can be used for scale-up and
modeling. Adequacy of mix with respect
to all critical components, and Steve Hammond made that point.
And just
to illustrate that point, content uniformity is one attribute. Dissolution, drug release, is another
attribute. If we do 10 tablet testing
for content uniformity for a 10 million batch, we do six tablets for
dissolution. Dissolution depends on a
number of factors. We do not require
content uniformity for critical excipients.
You only do for drug.
Here is
an example. The person who provided,
again, is from a major company. He is
in the audience. He didn't want to be
named, so I'm not naming him here. This
is a situation where we would not even have tested for blend uniformity because
the amount of drug is so high, and the tablet was failing, and was failing in
dissolution as a function of time.
So if you
have 10 million, what happens early part of the run, late part of the run, you
might miss that. And new
technology--this is from Steve Hammond--can address that.
Something
that I just wanted to point out, which is, our experience is slightly different
from Steve Hammond. We have been
working in our labs with near infrared imaging, and we can actually do image
analysis where you're looking at the chemical image, the grey and white spots,
so each pixel of that has the complete spectra. And actually we acquire that in less than a minute; he said 10
minutes.
So we can
actually look at a tablet, take a visual picture, and each pixel can give you
full information, so non-destructive and so forth. And you could see whether it's uniform or not within a minute,
and you can distinguish whether it's not mixed properly and so forth. But the technology is not an issue. We can do this step. That was the only point I was going to make
here. And it is a win-win opportunity
from public health as well as industry.
And one
point that was raised was out of specification and recalls. On the average, I think from a quality
reason--not average--last year, the number is in my mind, I don't have an
accurate number, we had about 150 recalls due to quality reasons on the drug
side. Now, there were more recalls for
other reasons, packaging, labeling, and so forth. But in my mind, the number 150 is in my mind, so I'm pretty sure,
but that's the score. The large
percentage of out of specification recalls are for deviation to the physical
attribute changes, and we right now are not focused on physics, we're focused
on chemistry.
One
win-win situation from a public health perspective is, when somebody wants to
go on-line to save money, time, and so forth, to do that you really have to
understand your process well. And that
is a win-win. You cannot just put
something on-line and be happy with it.
So it does support development of more robust processes and a high level
of process understanding is needed, and that's one win-win that we are.
Let me
just quickly go to what we are doing.
What should FDA do to facilitate introduction of PAT? Clearly in my mind, in our mind right now
is, eliminate regulatory uncertainty.
We have stated repeatedly the official FDA position: FDA is a science-based organization. FDA will accept new technology that is based
on good science. We have done that
repeatedly.
What we
don't have right now are standards for PAT, for its suitability, validation,
and a whole host of things. In fact,
you will have to approach this broadly, and every aspect of the process,
including all of specification, how to deal with, has to be developed. We don't have that. In this regard we probably are lagging
behind Australia and other countries, which is a bit unusual, for FDA to lag
behind.
What
should we do? Just to continue on
that. Define a clear, science-based
regulatory process. That we feel is
important. Current system is
"adequate for intended use" would be one part of that. We will have to think about a win-win
scenario, and to do that, defining that the current system is adequate, it may
not be as efficient as it can be.
So if it
allows introduction of new technology without becoming a requirement, we have
to think about that. So introduction of
PAT, at least for some time, should not be a requirement, would be one
approach.
Define
conditions under which PAT may replace current "regulatory release
testing" is important. Don't
simply keep adding the number of tests and hope that helps. You have to give something up, so you have
to balance, based on what is needed, based on the redundancy that is required,
balance the number of tests that are required.
We have
to develop a clear understanding of how to deal with invisible problems that
are not visible today, but will become visible when you have process analytical
technology. We will have to have
science-based review and inspection practices, and we will have to work towards
international harmonization.
Again,
the point I'm making here is, generally FDA has led the way in those
things. Here, we might be following,
and we need to catch up.
So the
challenges we have, limited institutional knowledge and experience, we have to
work towards building that. Seek input
and collaboration, we feel that is the only way right now.
What we
have already accomplished is, we discussed this at the Advisory Committee for
Pharmaceutical Science and got strong endorsement from that, and the committee
actually recommended that we form a Subcommittee on Process Analytical
Technology. The Federal Register notice
has been out. End of November is the
deadline to apply, and we encourage all of you who are here from industry to
consider being part of that subcommittee.
It's an open process. And we are
going to define the objectives of that committee in terms of defining what the
questions are for FDA.
We also
think we have to partner with industry, maybe with individual companies through
a creator mechanism. Clearly we are
already linked to academic pharmaceutical engineering programs and process
analytical chemistry programs. We
already have a consortium, PQRI, that we are using for that.
So I'll
leave it, stop my presentation with the questions Dr. Woodcock raised: Are you able to support what we are trying
to do? What resources do you suggest
FDA draw on? And are there additional
aspects to regulation of product quality that we should focus on? Thank you.
DR.
WOODCOCK: Thank you, and we'll open it,
if that's all right with the Chair, we'll open this for discussion now.
CHAIRMAN
LANGER: Yes. I would love to get comments from, questions both from our Board
as well as anyone in the audience, and particularly, you know, along these
lines. Bob?
DR.
NEREM: I mean, number one, it seems
almost like a no-brainer that this ought to move forward, because it seems like
FDA has a mission. Part of its mission
is in fact to facilitate the use of advanced technology for the benefit of the
American public.
Having
said that, what is it in the regulatory process of Australia or of other
countries where they have been able to bring this on board, that makes it
easier to bring it on board there than here?
DR.
WOODCOCK: Yes. Do you want to ask Pfizer?
DR.
NEREM: Right.
DR.
WOODCOCK: While you're coming up to the
mike, let me give a stab at it. I think
many of the other countries have less extensively developed regulation in the
manufacturing sector, frankly. That
makes it more difficult for us to change.
DR.
NEREM: Does that suggest that we have
too many regulations in the manufacturing sector?
[Laughter.]
MR.
HAMMOND: The difference in Australia
really was the attitude of the TGA, the regulatory body there. They had an instant interest in the
technology, to the point that they didn't just want to hear about it, they
actually wanted to touch it.
They came
into the Pfizer plant, they brought staff, it was actually other companies, and
they played with the equipment. They
had heard a lot about it, but actually wanted to see really what it could do,
play with it themselves, and went away with their own conclusions about what it
could do.
And I
think that was the difference, such an interest, and I have to say Ajaz is
treading down the same path. But that
was it. It was a real, "Let's get
to know this, let's touch it, feel it, play with it."
DR.
NEREM: Is Australia the only place
where this has happened, or has it also happened in Europe?
MR.
HAMMOND: It's happening very quickly
now in the U.K. The MCA, with a meeting
we had with them in March, they basically said to us, "Well, what's your
problem? Why haven't you brought this
to us? What are you waiting for? We like it." So it's happening in a number of countries now.
CHAIRMAN
LANGER: Yes?
DR.
DOYLE: Are these technologies that you
have developed in-house, are they proprietaries, so you don't want to share
them with the rest of the industry?
MR.
HAMMOND: No, it's the exact
opposite. In fact, we have developed
these with commercial instrument companies, and the only way we can get those
companies to develop these systems with us is to agree that they are available
to anybody. That system I have shown
you is a part number for Zeiss. If you
go to Zeiss and say, "I want," I can't remember what the part number
is, but that's what you'll get. It's
commercially available.
DR.
DOYLE: Well, in the microbiology arena
we use the, what, AOAC, the Association of Official Analytical Chemists, to run
these, I guess you would say validation studies, to compare to the gold
marker. Couldn't something like this be
developed?
MR.
HAMMOND: Yes, I think it could, and in
the U.K. we're doing-we're running a program with the London School of Pharmacy
to take these technologies, particularly near infrared, and develop gold
standard guidelines on how you would actually set them up and use them. So I think that's a very good idea, yes.
DR.
WOODCOCK: The Product Quality Research
Institute, which is a foundation, a separate foundation, was set up partly to
do this type of work, which is to collaborate amongst industrial, academic, and
regulatory sectors in doing the scientific work to, you know, develop
scientific understanding, partly for introduction of new technologies. So there is already an existing mechanism,
as Ajaz said, wherein if general kind of work needed to be done, that it could
be, that would be generalizable.
CHAIRMAN
LANGER: Other questions or comments?
DR.
PICKETT: Yes, I just had a
question. You know, this is, I would
agree it's almost a no-brainer to really try to get this implemented, and one
of the issues that I was wondering if it is an issue, is whether or not within
the agency, if there is the appropriate scientific expertise in the agency to
really begin to address some of these newer technologies as they come on-line.
DR.
WOODCOCK: Yes, that's one of the things
we wanted to talk to the Board about, actually, because as Ajaz pointed out,
much of the emphasis within pharmaceuticals for the last 100 years has been in
the wet chemistry laboratory. Much of
this is in chemical engineering and mechanical type of sciences and
technologies that need to be brought in.
And no, we don't have the range of expertise, neither in the field nor
within the Center for Drugs, right now.
CHAIRMAN
LANGER: Any comments from, we have lots
of people in the audience? Yes?
DR.
WOLD: I am Svante Wold from Umetrics,
Incorporated. We are going to give a
brief comment after lunch, but right now, I think that one way to get things
rolling, we represent a technology that exists since many years, and one thing
I wanted to say is that this technology, the pharmaceutical industry,
interestingly, are far behind.
Like the
semiconductor industry that was mentioned, they applied this, exactly the same
technology, and the semiconductor industry is very much a chemical process
industry, which we don't understand what it is. All steps of making chips and wafers and so forth are
chemical. So it's very much the same
technology, the same instruments, near infrared is coming, and so forth, and it
can just be lifted over.
Now to be
lifted over, I think one very interesting initiative would be if FDA and some
drug industries agreed, let's set up a feasibility study on some existing
processes where the traditional quality control works in a certain way. What will happen if we now put on proper
process analysis chemistry and proper multi-variate evaluation and see what
happens? And then we would all learn, and
hopefully one would see that this is a win-win situation.
CHAIRMAN
LANGER: Any other comments? Maybe we could put those three questions up
on the board for a second. But I mean
the first one basically is, should you go forward, so maybe just to get a
consensus. I think we sort of heard
it's a no-brainer, but is that a fair sort of preamble to the questions?
"Are
we able to support the approach?"
So does anybody have any disagreement with that? That's a no-brainer. I think several people said that.
How about
the other two questions? Are there any
comments? I mean I guess there were
comments kind of made. Are there any
particular questions, Janet, that you want people to focus in on?
DR.
WOODCOCK: Well, I would appreciate any
ideas the members of the Board have about academic, other resources that you
know of. Obviously, we are prepared, as
we said, to collaborate with the industrial sector on this, as well as the
academic sector that we know about, but it strikes me there are many broad
areas of expertise that need to be brought into this, as well as we need to
hire some broader skill sets within the agency.
And the
other part is the additional aspects of regulation. I mean, I think the question that was asked earlier about why
haven't we adopted this and so forth, it's hard to recognize, I think, unless
you are actually involved in this, what a large paradigm shift this will be for
the method of regulation of product quality, the way it has been.
And we
plan to go about this by taking some examples, as the person who just spoke
said, taking some pilots and so forth and moving forward on small pieces, but
moving to this approach really does pose a lot of challenges for the FDA. I don't want to underestimate that. And I guess those are--
DR.
NEREM: Challenges--
DR.
WOODCOCK: Pardon me?
DR.
NEREM: Challenges because of your mind
set or what?
DR.
WOODCOCK: Yes, I think that's a
fair--well, it's really changing, yes, it's changing the philosophy or the
paradigm, okay, from a testing paradigm to a reliance upon physical, chemical,
on-line, and other types of trend methodologies, pattern recognition and so
forth. It's a very different paradigm.
It's
going to cause some disruption to the industry, too, because we're going to
find out stuff, as Ajaz was saying, we're going to find out things about
existing products. There are existing
products out there in market. We know
they have problems. We know they fail
their specifications intermittently. We
don't know why. Now we're going to find
out why.
And so
we're going to have a large range of issues that we're going to have to deal
with as we go forward on this. But if
you all feel, and I see you have some thoughts on this, you ought to share them
with us.
CHAIRMAN
LANGER: Bob, did you want to share
something? Do you want to say
something?
DR.
NEREM: I want to let Alexa speak. Then I'll share something.
DR.
CANADY: As I listen to you, if I were
an industry person, I'd be terrified by your attitude. You know, I mean, in a sense of the concept
that there's going to be tremendous dislocation. And I guess to me the idea of a successful transition is the
avoidance of that dislocation rather than the acceptance of it.
DR.
WOODCOCK: Yes, that's a good additional
aspect to keep in mind. Obviously, to
make this a win-win, we're going to have to avoid those consequences.
DR.
NEREM: Yes. I guess, you know, that last question--and obviously I'm not
speaking as an industry person--but the word "additional" seems to me
not to be the right modifier. Because
presumably, you know, if one does a zero base analysis of the process with new
technology now in place, you will come up with different regulatory aspects
which won't necessarily be additional regulatory aspects.
DR.
WOODCOCK: Okay. Well, I wasn't talking about adding
regulatory aspects. I was talking about
what Dr. Canady was talking about. What
are the implications of this are we going to have to be careful about as we
move forward?
Obviously,
if this is set up in a way that people perceive severe negative consequences
from this, that's an additional aspect that we need to keep in mind. I wasn't talking about should we add more
testing. That wasn't the meaning of the
question.
CHAIRMAN
LANGER: Owen, you wanted to say
something?
DR.
FENNEMA: Well, I'm a little puzzled
about why there's so much concern about the difficulty of executing this kind
of an advance. It doesn't seem that
difficult to me. Maybe that's--maybe
I'm naive about this. I don't
know. But it doesn't seem that
difficult to me, from FDA's standpoint, to adopt these kinds of new methodologies.
What is
needed, I would suggest, is simply a rather short document describing what
FDA's expectations are when somebody comes forward with a petition proposing a
new methodology. You know, what kind of
validation procedures they use, some data they have collected to show that this
is effective and accurate and repetitive.
That is, to me, not a very difficult thing to do, and it should be done.
CHAIRMAN
LANGER: Any other? I'm just going to make--you know, when you
mentioned on the academic thing, one thought that occurred to me was, you know,
maybe to give some seminars at universities and chemical engineering schools,
and certainly at MIT. Maybe Dr. Raju
and I could work on that.
But
there's also other schools that we might be able to do that. I mean give, you know, a lecture and a
seminar series, I think might, you know, get departments realizing that that
would be useful, and maybe some students and post-docs seeing that.
So maybe
if you--I'll be happy to help--you could take some initiative to do that at
MIT, and maybe Georgia Tech might, you know, and just different schools,
there's a lot of chemical engineering departments that are around that might, I
think, benefit from that. So that would
be a useful way of, you know, maybe trying to sow some seeds.
DR.
WOODCOCK: Ajaz?
DR.
HUSSAIN: No, I think we are very
cognizant and we are actually working towards that right now, and--
CHAIRMAN
LANGER: How?
DR.
HUSSAIN: Well, at present, for example,
right now I have a faculty appointment at Michigan and Purdue, and we are sort
of downlinking University of Michigan pharmaceutical engineering seminars to
FDA. We are making presentations on
this quite often now.
CHAIRMAN
LANGER: Is this just pharmaceutical
or--
DR.
HUSSAIN: No, the School of Engineering
has a pharmaceutical engineering program now.
The point
I want to make is, there is a transition.
Pharmacy schools have lost the focus in this area, because they--I came
from pharmacy school, I was a teacher there--they moved towards clinical, and a
hole got left behind. And Rutgers,
Michigan, have now a pharmaceutical engineering program in their engineering
school. So we are working with them to
get our ideas and our needs expressed, so that as their curriculum develops, as
their research programs develop, they keep that in mind. So yes.
CHAIRMAN
LANGER: I think that's good, but I
think that some of the comments that people in the audience made, as well as
here, is that there is a lot of work going on in, say, materials, you know, semiconductors,
material science, chemical engineering.
And so somehow, again, I think people look for good problems, and this
is a good problem. So that may be a
very different set of people that you also want to, you know, get acquainted
with.
I'm sorry,
Bob. Did you want to say something?
DR.
NEREM: No, I would just simply, and you
probably know chemical engineering better than I do, Bob, but it seems like a
number of chemical engineering departments have initiated efforts in industrial
bioprocessing. I think that's becoming
wider spread than many would think.
CHAIRMAN
LANGER: That's right, yes, but I think
that some of these particular things, I don't know that they are necessarily
focusing on. So I think it's actually a
good point. I think it's actually a
natural thing that they would probably be quite interested in this. Yes?
DR.
PICKETT: Bob, just another
question. I mean, we haven't heard from
some of the other division directors, but I would be curious whether or not
there's any lessons to be learned here, because some of the other divisions
like CBER certainly have receive innovative new products, have had to rapidly
accommodate new technologies in order to release those products, and are there
things that can be learned from other divisions that would be applicable here?
CHAIRMAN
LANGER: Kathy?
DR.
ZOON: Again, I think a number of
comments were made on the importance of an adequate science base for the agency
and supporting the scientific underpinnings, to understand both from a process
point of view and an analytical point of view the implementation of those
processes into the biopharmaceutical field, for instance, which CBER primarily
deals with.
And one
of the aspects is really trying to understand the technology early enough, and
right now I think some of the areas that we're trying to focus on really deal
with microarray and proteomics and looking at their eventual adaptation to
processing of biopharmaceuticals in a way that has a quicker turn-around time
and reliability and quantitativeness that will be utilized in the future. So I think having the scientific
underpinning within the agency is extremely important no matter what discipline
in whatever area we have, and each of the different Centers can lead the way
for their particular areas of expertise that they may have.
One of
the interesting thoughts in hearing the presentations this morning, though,
which I see as maybe not so much an FDA willingness to deal with the change,
it's actually how willing the broad cross-section of the pharmaceutical
industry is in accepting this change, because I think people are in different
places. And certainly some of the older
conventional products that have been around a long time, it will not be as easy
for people to adapt the technology to those processes, or they may not want to
make the investment. And then it
becomes, if it becomes the state of the art, then that becomes CGMP, and then
how does that relate then to the standard for the industry across different
product areas?
I think it's
an important discussion, and where we have the capability, I don't think FDA
should be the stumbling block for this at all, but I think we do need to
investigate in the broader cross-section of the industry where people are in
this, and have an understanding. And
then how can we help get people into this field, to have better and more
consistent products using the technology?
DR.
WOODCOCK: Ajaz said this so quickly, I
think, that people may have missed it, but I really think that one of the
things we will have to do with introduction of this new technology is that it
cannot become the new standard against which all else is judged for a very long
time, to be fair, that that be a stumbling block. If three people, three different firms or lines, production
lines, have this technology, then that could not be considered the state of the
art.
And many
of you are not aware of how this usually works, but there is a current Good
Manufacturing Practices regulation, and one of those has to do with sort of
continuous improvement of the basic standards for manufacturing, and we don't
think that should be part of this early implementation.
CHAIRMAN
LANGER: Any other comments or
questions?
DR.
FEIGAL: Could I comment about devices,
just very quickly?
CHAIRMAN LANGER: Sure.
DR.
FEIGAL: One of the interesting things
to consider about devices is that some of the things you can do with
pharmaceuticals, such as rely on pharmacology and pharmacokinetics because they
are all drugs, you can't do that for devices.
They are such a heterogeneous group of products. And so it's interesting to look at how the
structure of the consumer protections were built around devices.
As you
are probably aware, the majority of devices are approved with the 510(k)
mechanism, by which they show that they are substantially equivalent to another
product. There is no manufacturing
section in a 510(k) application. The
kinds of manufacturing controls that they have to put in place do not get any
type of pre-market clearance in that process.
There are still manufacturing standards and controls that are required,
but they are to be established by the field at the time of the inspection.
So it
creates a very different environment that actually allows rapid changes in that
kind of a sector, because there is no pre-market clearance, there is no
manufacturing supplement, none of those types of features. Now, there are times when that creates a
problem, and we have a real concern about the products.
There
have been implants, for example, that have had sort of constantly changing
design features in terms of thinness of material, method of casting, which
plastics were used as cushions for--it was a weight-bearing implant. And it was very hard to know, as we looked
at failures of that implant, what we were dealing with, because there was no
requirement for us to be told when all of the different kinds of changes were
taking place. And that is, it's
actually one of the nuances of the device regulations, is when do you change it
enough that you actually owe us another application because now it's a new
device?
The 60 or
so devices that are novel enough to be approved under the PMA process have
similar types of manufacturing requirements, but again because of the fact that
devices are so different from each other, I think there probably is a climate
where we are much more used to change.
And like
drugs, one of the things that Janet mentioned earlier--or I think you did, I
can't remember if you did or if this was a discussion on the break with someone
else--but one of the things that has happened is that many more things have
moved towards no longer requiring pre-approval from us, but being things that
they notify us change is being effected, or things moving into annual reports,
or in our case we have something called real-time review which is used in a lot
of the manufacturing, manufacturing changes.
But it's
actually one of the hardest things for us to know, is when a change enough that
you actually should go back and learn something about the product again? It's a big issue for biologics. There are times when a subtle change
actually has an unintended disastrous sort of effect. And the hard judgment in science-based regulation is to say which
of those make enough difference that you want to see those in advance, want to
stop and think about those, versus what happens with many things, including
most recalls, which is you discover a problem, you go back and figure out what
caused it, and see if you can prevent it the next time around.
CHAIRMAN
LANGER: Any others?
DR.
FENNEMA: There are some questions in
the back.
MR.
PARSONS: John Parsons, and I represent
Umetrics, but my background is 25 years in the industry from the commercial
side. And I would just like to, now
that I'm not in the industry, make a comment I think that isn't addressed here.
I think,
as I listen to what Ajaz and the group here have presented, it's invaluable to
the industry and to patient. I think
that's the key here, that we deliver the quality as a commitment to the patients,
and obviously that's what the agency is all about.
But from
the commercial side I can tell you, as a member of an executive board, this
kind of discussion from an investment standpoint and a risk standpoint just
turns my stomach, because of the concerns that were expressed before. It's a reengineering effort that has been
described by Pfizer, by Norman and Steve, that has to be done through the
process change and also all of the investment in terms of the equipment. And it's also a risk I think that has been
identified in terms of what will we find that we didn't know about the product
before, particularly for the older products.
I would
just say this. I would encourage the
agency, as you move forward, that you do this as a cooperative effort with
industry, and I am sure that you will do that, so that there is a transition
period with the enforcement necessary to bring this to fruition, because it's
absolutely necessary, but also where there is a cooperation, so the industry
doesn't rise up and with the powers that are there, perhaps interfere with
something that's necessary and that absolutely will benefit the patient in the
long run. Thank you.
CHAIRMAN
LANGER: A comment back there?
MR.
ROY: Suva Roy, Otsuka Maryland Research
Institute.
Having
lived on both sides of the fence, so to speak, being in FDA, being now in
industry, I don't think the regulatory hurdle is as big as people think it
is. There is the process of alternate
controls that can be applied, and FDA doesn't even need to approve those
things. Perhaps what the FDA can do to
change that, to make it a formal process, is allow the companies to submit
supplement to the application, and allow that for approval which is not a
current process that is entertained or used.
And
secondly, the other comment I wanted to make is that it is very heartening to
see that now, after probably about 25 years after I had played with something,
that something else is coming to fruition.
Back when I was working in industry, I had worked with, played with,
literally with tablet compacts and acoustic vibrations to see if that tablet
fractures. However, back in the early
'80s there was not enough computer power to do that quickly. As a result, it was just an academic thing,
but it is very interesting to see it coming through, and I really, really like
to see this develop, and I commend Ajaz for bringing it to the attention. Thank you.
CHAIRMAN
LANGER: Any other comments? Yes?
MR.
TURJAC: I had to say something. Emil Turjac. I'm with Purdue Farmer right now, but I've taught and I've been a
consultant, and I've been around even longer than the last gentleman, about 30
years.
To our
academic friends, I was there early enough, when we tried to introduce HPLC,
and the FDA did not have instruments or people who knew how to run it. And as a time-consuming thing, to keep
stalling, it was "What's wrong with titrations? They've worked for 40 years," until they could hire the
people and get the material.
Having
done that, and most of the people of my genre are now directors or the like,
and they're sitting back saying, "If we put something new in, it's going
to delay our NDA, so let's just go to the USP.
We know it's better, and for alternatives we would have like laser light
scattering for particle size as our alternate method, and for thermal analysis
for melting rings as an alternate method, because God forbid we hold up,
because we've got 15 years of our 17-year patent already shot. We can't have that come back to us."
So I
think it's gun-shy. The younger
chemists and the younger FDA people are going, "What's wrong?" But the people who make the decisions have
been burned and they don't want to do it again.
CHAIRMAN
LANGER: Any other comments? Yes?
DR.
HUSSAIN: Just to comment on the
alternate approach, the alternate approach is fine. I think that leads to the two parallel universes that Pfizer
talked about. You still have the old
method that you have to do for regulatory compliance, and then you can have an
alternate. It doesn't solve the problem. I think we really have to bring the two
universes together.
CHAIRMAN
LANGER: Any final comments before we
eat?
Well, I
think that the consensus is certainly that everybody seems to think that you
should go ahead with this
--oh, is there another, another one?
MR.
ROY: I just wanted to add to Ajaz's
comment, that if FDA has got a process of approving the alternate methods once
they are mature enough and the company wants to do so, that solves the problem. Then it solves the problem of parallel universes. Unfortunately, that's not a process that is
right now in place or is actively entertained.
CHAIRMAN
LANGER: I think on that note we'll
probably adjourn the session and meet back at 1:30, but I think hopefully the
dialogue can obviously being continued, and people should feel free to give you
feedback, and it will be great to hear in future sessions how this is going,
but obviously it's very positive.
DR.
WOODCOCK: We thank the Board for their
advice.
[Whereupon,
at 12:45 p.m., the meeting recessed, to reconvene at 1:30 p.m. the same day.]
AFTERNOON
SESSION
CHAIRMAN
LANGER: If people could take their
seats, we will get started.
A number
of people have requested to make comments, so the first one is Dr. Wold and Dr.
Parsons and Dr. Josephson from Umetrics.
What I was going to do is ask each group to hold their comments to 5 or
10 minutes maximum, but if the first group would like to get started.
DR.
KETTANEH-WOLD: I would like to talk a
little bit about real quality control of batches as they are evolving, rather
than doing what we have talked about, was one waits until a batch is finished,
do some quality control, find that it's not up-to-date. You cannot--the accepts are not found, no
correction can be done, and you get only scrap.
Instead,
one can have real-time quality control.
How do we do that? Well, first
of all you have to have some infrastructure.
That is, on your batch you should be measuring on-line some adequate
variable, adequate parameters, like temperature, pressure, whatever.
We
summarize that multivariately in a good way, and model the evolution of the
batch, and once we have that, we have good representative set of batches. You can make a fingerprint. That is, you can have the average trace of
good batches within three sigma limits.
Once you
have that, which is based on modeling the evolution and having this control
chart, new batches as they are evolving in the real time are displayed inside
this fingerprint, and you can see it.
If they go out of the limits, all you have to do is find out which
variable is causing that. You can just
double click on the software and say, "Why is my batch going
out?" And you can make immediate
correction.
And not
only that, but when the batch has reached 50 percent of the evolution, we can
predict what the whole quality will be, and you can see this prediction
changing as the batch is evolving. And
this is just based on multi-variate analysis and then taking the average and
making control charts.
And here
I will show you a blending. This was a
pharmaceutical process of mixing, and you can see here the trace, the
fingerprint. This is the
fingerprint. All good batches should
evolve right in this little, little interval.
The red line are the three sigma; the green line is the average trace,
the golden batch, the average trace of the good batch, and these are two
summaries of it.
And you
see now a new batch as it is evolving, and you see that there is first a
starting phase, then there are levels that are changes of the variables, and
then it showed evolving here. This
batch has started increasing the level much too early, and if we just double
click on that, it tells us which variable has been increased way too fast, and
then you can immediately correct and bring this batch back to make it evolve
within the limits.
And if
you want to see what is the control chart of this variable, you can just double
click on the variable. You can see that
for this variable it shows first there at 3,000 something here, and then raised
the level, and they have raised the level way too early. And this allows for correction immediately
rather than when the batch is finished.
And if
you have a lot of these and you follow them, and you know that these batches
stay within the limits, you are almost sure to have a good batch. And this is very simple, it's visual, it's
based on good science. It uses
multi-variate analysis to take all the variables in account, including their
correlation. It's like your Dow Jones
that's a summary of our stock market.
It tries to do the best possible summary of the evolution, and it also
takes in account all the raw material and all the initial conditions.
So the
benefits are enormous. It brings the
analysis of three-batch data to a simple framework. It allows interface as the batch is evolving. You can predict final quality. And it applies to both the evolving batch
and the whole batch. The results are
very easy to interpret, and it can facilitate compliance with regulation,
because instead of sending numbers, just send the fingerprint.
And one
last comment on everything. As somebody
once said, that change is the practice complicated and frightening, but not
changing is worse. It's just that one
has to manage the change with a transition.
Thank you.
CHAIRMAN
LANGER: Are your colleagues talking, or
just yourself?
DR.
KETTANEH-WOLD: No, that is--
CHAIRMAN
LANGER: Okay, great. Any comments or questions?
Okay,
then we'll go on. The next statement
and comment will be by Gideon Kantor.
DR.
KANTOR: The purpose of this talk is not
for you to find out whether I'm ambidextrous.
By the way, you need to change gears because you are now going--excuse
me, you have the page on that, what I'm going to cover, and it's a little bit
of a different topic. And what I'm
talking about is enhanced regulation, regulatory science, for animal research.
First I
think I should kind of give you a little bit of a sketch of my
qualifications. Okay, what I'm going to
talk about is first my qualifications, then I'll talk about the rationale for
my proposal, then I'll talk about the enhancement considerations, and then
finally one thing I always end up with is final comments.
Okay, my
qualifications. I am a past president
of the FDA Sigma Xi Chapter. I would
like to brag a little bit here. I was
the first CDRH president of the FDA Sigma Xi chapter many years before it
reached popularity at CDRH. And I am a
member of the chapter now.
In 1995 I
retired as a research physicist from CDRN/OST, and since then I have regularly
taught as Adjunct Associate Professor, Biomedical Engineering Department of
Catholic University of America. I have
taught a course in neural stimulation in rehabilitation, and I also give some
lectures on regulatory aspects. I am
trying to teach to the students that really want to go into biomedical
engineering in a practical manner, if they don't like to get involved in
regulatory aspects coming up as a part of it, they better change their field.
And I am
presently a member of the Institutional Animal Care and Use Committee, and I
want to emphasize that my statement below is strictly my own. I would like to reiterate that. My statement is strictly my own. Any members of the committee, in this
particular case guilt by association does not apply. But I am mentioning that to the membership of this committee to
explain how I developed an interest in the regulatory science issue of enhanced
animal research.
Now let
me talk about the rationale. The
unjustified death of a volunteer at Johns Hopkins Medical Center, and
previously the unjustified death of a volunteer at the University of
Pennsylvania Medical Center, are of great concern to me. I would like to say why this is of concern
to me. I am a product of Hitler
Germany, and I do know I exaggerate, but whenever I see what I consider
clinical experimentation which is not carefully regulated, I get the
jitters. But this is strictly a
personal problem and it's not meant to convince anybody else about the point of
view that I have.
And there
are more cases that were discussed in the August 6, 2001 Newsweek issue on page
36-42, thanks to my wife pointing it out to me. These are the reasons that I would like to propose here that
possibly enhancing the role of regulatory science, animal research, might
result in minimizing these types of fatalities.
Before I
become more specific, I would like to first refer to the FDA 2001 Science Forum
that was concerned with establishing linkages between various scientific
disciplines. On the sideline, I would
like to say I am very much interested in this whole question of linkages, and
it is my opinion that a meta search engine that links different type of data
banks with their keywords is essential for us to move into the 21st century and
not feel inundated with information.
Okay,
excuse me. I believe that there is
another opportunity to establish new linkages between animal and human
research, and by doing this possibly increasing safety of volunteers in
clinical trials. That is one thing that
I noticed, I am very much clinically oriented in terms of a biomedical
engineer, and one thing I noticed when I joined the IACUC committee is that
that linkage was really not there, at least the way I saw it. I did not notice any linkage. People did their animal research but they
didn't realize that it has some links with human research. Again, this is my personal point of view.
Based on
my own research, I have gotten involved in discussion of global-local thinking
and the information explosion, so I really felt pretty good. Sometimes when you go on your own, you feel
that you are really kind of crazy. I
still am probably kind of crazy, but at least here was an instance where I was
not.
Enhancement
considerations. Since I do not have
specific data available pertaining to results in regulatory science animal
research, all I can do is ask a few intuitive questions and then hope that the
Board will have time to respond to them, and I'll be covering three
topics: IRBs, FDA reviews, and in-house
animal research.
Institutional
Research Boards. Could the
Institutional Research Boards enhance their awareness of considering animal
research in terms of trying to minimize fatalities in clinical trials? And as I was re-reading this paper here,
what came to my mind, maybe my immediate training in this respect might be
purposeful.
Number
two, FDA reviews. Could the awareness
of FDA reviewers be enhanced in terms of assessing whether animal research is
needed before human trials are approved?
Since I worked in FDA until 1995, I realize that the FDA reviewers are
under terrific pressure to get things done, so this is here kind of a
rhetorical question. It seems to me
that if this were done at all, then some more money must become available to
project for this particular purpose.
In-house
animal research. Could the FDA focus on
doing animal research in support of clinical trials be enhanced. Now, that I think is something that you can
subconsciously develop, because you can always have ideas at night where you
don't get paid for them and bring them in in the morning. But it seems to me that if this is in the
background of animal researchers, this idea that yes, that thing of those
clinical trials, that kind of self-consciously it seems to me eventually they
would go in that direction, but again this might mean some training.
Final
comments. In support of my proposal of
enhancing regulatory science animal research, I would like to refer to the
statement of Dr. Schwetz in his introduction to the 2001 Forum: "As we continue to enhance the science
foundation of FDA, the effective training and retraining of our scientific and
our medical personnel is among our highest priorities."
And this
really brings out not only the training at FDA which I greatly enjoyed while I
was there, but also the outside world like hospitals and so forth. Can there be maybe a foundation that has too
much money, could spend, could start a grant in this direction?
Accordingly,
it might be useful--I kind of interrupted this, but based on the last Forum and
the statement of Dr. Schwetz--it might be useful to have a session on enhancing
regulatory science animal research at the 2002 FDA Science Forum, if possible,
or instead later on at the 2003 Forum.
I like to
thank the committee for giving me the opportunity to present my very, very,
very personal views. Thank you very
much.
CHAIRMAN
LANGER: Thank you. Any comments, questions? Thank you very much.
The next
person to speak is Scott Ratzan, who is the editor of the Journal of Health
Communication.
DR.
RATZAN: Good afternoon. Thank you, Mr. Chairman, committee, and
everyone here for the opportunity to speak today.
I wanted
to sort of switch the discussion, which I think presages what Dr. Nerem is
going to talk about in terms of some of the challenges subsequent to the public
comment period on the need of how we communicate risk and how we make
regulatory decisions, and the impact that it has upon the public.
As you
can see, I edit a journal, the peer review Journal of Health Communication, and
I'm on the faculty at three different universities where I basically teach
health communication, one in the School of Epidemiology and Public Health at
Yale; at Tufts in the Department of Family Medicine and Community Health; and
at George Washington in Public Health and Health Services.
As I'm
told here, I'm supposed to also disclose other conflicts. I consult on a variety of areas, with the
common denominator being communication.
I consult with about five different pharmaceutical companies, on and
off, dealing with communication issues.
I'm on the study section for the Agency for Health Care Research and
Quality, for communication. I consult
with about six other Federal Agencies, NIH, CDC. I've done consultations with WHO and a variety of others. I also have sat on two IOM committees, most
recently in terms of communication with quality issues and health indicators
for the country.
With all
that being said, nonetheless I'm representing myself today. I'm not representing any of these other
groups that I've spoken about. And I'm
trying to raise the debate to deal with ethical communication.
There
were busy Brueghels in the 15th, 16th century.
Our life is just as complicated today.
However, we try to explain a lot of things in two dimensions. We try to explain things with one versus the
other.
So what
I'm going to try to do is a 10-minute challenge for me, as Celeste had given
me. Background on communication. Lessons that we have learned from BSE. Thimerosal and vaccine risk. And recent challenges that are very fresh in
our mind, dealing with anthrax. And
some ideas that I think this committee could well consider and advance the
public health.
Our goal
is really similar to what the World Health Organization has presaged many years
ago: "Informed opinion and active
cooperation on the part of the public are of utmost importance in the
improvement of the health of the people."
Clearly we embody that in the open process, and again, thanks for even
speaking today.
But how
do many of us make decisions, whether we're on advisory committees, different
committees, and so forth. Sometimes we
say the data speak for themselves. Of
course we know, we've already heard data don't speak. There is data, information, knowledge, and wisdom. We can explain the issue with statistical
significance. Can science always
explain the areas? We have progress
that is incremental with evidence-based hypothesis testing, the 21st century
approach. And we still believe that
scientific method can solve most dilemmas.
But how
does the public make decisions? Very
differently. Many think the mouse is a
little human, or even worse, the plural form of the word "anecdote"
is evidence. And this goes back to what
I think James Fennimore Cooper first said in 1831: "They say" is the monarch of the country. It doesn't matter who says it, as long as
the public believes "they" say it.
We have to think, who are they "they"? Is it the media? Is it us?
And how
ought we make decisions? George
Campbell reminded us, "Passion is the mover to action, but reason is the
guide." And we're all here doing
reasoned, evidence-based, but I believe that evidence also means hard--and I'm
not saying soft sciences, but the social sciences. How we measure public opinion, as Walter Lippman had mentioned
last century, in a whole variety of other ways. That we're goal-driven, thinking of the public health and the
people that we basically serve. And
then finally, we're using credible, trustworthy, understandable, and emotional
and cultural sensitivity.
So what does
all this mean? It means what we do here
today, sound science and evidence. We
add value with deliberation, debate, and dialogue. And, finally, we're involving a variety of different people in
the process, ideally a partnership that I think other speakers have already
mentioned today.
But
nonetheless, when committees often sit down, we have a sound science and
evidence approach. What is the strength
of the evidence, and what are the scientific criteria for regulation? Or, on the other axis, how high is the
risk? And if risk is so great, we have
to regulate or do something specific.
But
there's been some changes, as you might know, over the last 47 years or
so. It was really just a randomized
clinical trial that started in 1947. I
mean, it's not like that's been the gold standard for centuries. And now we have new standards, a
precautionary principle, which is the axis going down, of where we basically
lower and have changed some of the burden of proof.
And more
recently, something that is very much of a concern to me is the Thimerosal
issue, and we'll deal a little bit more with that in the presentation. Because Thimerosal, a recent Institute of
Medicine committee has issued a different measure of biological plausibility,
and whether you agree with where I actually put that arrow, I think we need to
think where is that red line and how are we going to be able to continue to do
that committee after committee after committee that has different views.
So how do
we deal with uncertainty? The precautionary
principle has a variety of different definitions. Some people take it down to "It's better to be safe than
sorry." Others are saying no, in
advance of having complete scientific knowledge, theory testing, basically
we're using foresight.
But the
changing paradigm has really challenged us.
It has challenged us that the burden of proof is shifting. It used to be to make a change you would
have to say why something is better than the status quo. Now we have to, for the Thimerosal issue
specifically, why is the status quo specifically bad? Scientific uncertainly, and hence subjective evidence, is in the
equation. And, finally, scientists and
regulators are requiring evidence now that still needs experimental design.
What can
we do? I've been looking at the
evidence based on this, not only with my journal, but also I edited a complete
current bibliography of medicine with the National Library of Medicine on
health risk communication, and there's 847 different articles we found. Institute of Medicine has done about three
reports already. But still,
nonetheless, we often don't follow the same science base that has been presaged
by them, of how we deal with value judgments and how people make decisions about
risk information.
Vince
Covello has done a lot of this work at Columbia in terms of his Center for Risk
Communication, and what he shows us in a variety of different studies with
other people is that trust and benefits are looked at as the most important
elements. These are not scientific elements
of what the actual risk is, or probability based. This is trust in the messenger.
Who is saying it, and what does it mean? And we'll think about that just in terms of the anthrax issue
that is all probably still fresh in many of our minds. Myself, living in Washington, I still
haven't got my mail that's quarantined.
This is
the process, what happens.
Policy-makers, experts, opinion leaders and the public are in
partnership. And it says here,
"Upon further consideration, the evidence of fire is not as strong as
first as it appeared. We regret any
confusion that we may have had, and will continue to," and you can see
everybody stormed out of the theater.
This is my segue into BSE, vaccines, and anthrax, and some of the
challenges that we face.
I will
very quickly go through the BSE issue, because I know I only have 10
minutes. And on the back cover of a
book that I edited, "The Mad Cow Crisis:
Health and the Public Good," I have these three quotes.
"The
biggest crisis the European Union ever had," according to Franz Fischler.
"The
worst crisis the British Government has had since the Falklands," said
John Major.
And
"If one wanted to study the perils of imperfect policy-making, this case
provides them all."
I could
probably update. The book came out in
1998. Last year, in 2000, the
Frankfurter Allgemeine said BSE was going to be the Black Plague that had not
hit Europe yet, and some people still say it's the AIDS crisis that the British
never had.
This is,
however, a back report looking at it:
"There still is no scientific proof that BSE can be transmitted to
man by beef, but this is seen by SEAC"--which is the Spongiform
Encephalopathy Advisory Committee--"as the most likely explanation, and
all our control measures are based on the assumption that it is."
We have
continued, and we could explore this everywhere from our TSE Blood Advisory
Committees to a lot of different policies that have changed around the world,
this has been a problem of where the scientific proof lies. Above the line here the trade union
officials and others are who people trust, and below the line are who people
don't trust. And as you can see, the
government scientists, the business leaders, the politicians, the government
ministers, and the journalists all have lost as part of this BSE issue. This is in the U.K. I don't have data in the United States. We haven't measured it as such, like this. It would be very interesting to see what
this all means.
Last, in
terms of what the House of Lords report that came out last year reminded us,
the government did not lie to the public about the BSE. Government was doing their job. They believed the risks posed were remote. Confidence in government pronouncements
about risk was a further casualty. And
of course it then says that this is actually affecting everything in the areas
of science, including biotechnology and information technology. And the British, later in the report they
actually recommend a committee for the public understanding of science be
integrated at the federal level, at the U.K. level, and then in different
universities.
I'm going
to switch a little bit to Thimerosal, but I'm going to do this quickly because
this is very data-rich and it is still, the jury is still out, and part of it
is early. You may recall that almost
over two and a half years ago, Thimerosal, by part of an act it was released
that it was a vaccine preservative that could have exceeded the actual mercury
dosage.
Needless
to say, a lot of policy happened very quickly, our public health groups, our
academies of pediatrics and so forth.
And the long and short of it, if you read through the basic pieces, are
that Hepatitis B vaccinations, despite that there was vaccine on the market,
the real experiment, shall we say, once policy was made, caused thousands of
people, of children in this country, not to get vaccinated, and there's already
some documented cases. Particularly CDC
has looked at four states, one state where there is a definite death and others
that are still there. And this is how
it is still ongoing, and right now because of the uncertainty, each state by
state is only slowly increasing to levels of Hepatitis vaccination that's
necessary. And as you see at the top,
it could prevent as many as 5,000 deaths a year.
And I'm
rushing through this, unfortunately.
CHAIRMAN
LANGER: It's about 10 minutes, if you
could try to finish up.
DR.
RATZAN: Okay. I'll skip over the IOM stuff, and I just have three slides on
anthrax. Who does the public believe in
health, in issues of health? And if
you see, on the bottom are the people
we usually hear from; and if you see at the top, people who people trust,
remember that's science-based trust.
And these
were the messages that came out in the last three weeks. Most of the messages that came out from
politicians and government leaders are below the line in the mistrust area.
This was
what Scott Lillibridge said last week:
"We knew that communications would be important, but I don't think
we knew it would be this dominant in the response."
So what's
the common denominator? And thank you,
Mr. Chairman, for another minute or so here.
Public health values need to be integrated. How do we do that with societal risk quotient? When we make decisions, how does it play out
in society? And if we don't consider
communication, we're going to have a fulminating, unintended effect by our
policy efforts.
So these
are the questions I have and things that we should think about. If we embody on evidence-based approach by
providing stringent scientific reassurance related to regulatory issues, we're
not reassuring the public(s) that we serve.
That's really not scientific.
What we really need to do is think about value and trust driven, so we
have a common rubric. And I think that
this, the field that I am in, is the most humane of the sciences and purest of
the arts, and we try to balance both of those.
So these
are the five questions: One, could
every committee have an expert or someone who thinks about communication or
public health, who could add the science of how this most likely will play
out? If we make this decision, what
will happen? And think about
perceptions and practice. There is a
scientific approach to this.
Secondly,
does the status quo consumer representative that we have on the committees
really represent the public, or are they more advocates representing a subgroup
of that public? That's an important
question to think about.
Can we
develop a common metric? And this is
something I think is one of the biggest challenges, particularly with all the
different advisory groups, not only here in Washington at FDA but all around,
and CDC committees and so forth. Can we
try to have a rubric for biological plausibility and safety and precautionary
principle?
And the final
questions: Can we integrate societal
risk, that risk is not just for the molecule, it's not just in the Petri dish,
it's not just in the laboratory, it's where we all live. And that's just not with vaccines, that's if
we're thinking about how we may recall or limit certain drug use and then other
potential morbidity and mortality to other drug use, on common over-the-counter
drugs, for example.
And then
finally, could the FDA establish a coordinated communication program to inform
the public and their intermediaries of how decisions are made under
uncertainty, as well as the real risk of products? And that, I think, is the more opportunity to develop what my
research is in, is in health literacy and how we can develop a health literate
public.
And
unfortunately 90 million Americans can't read or write on an ongoing basis, to
understand the level of what we're putting out in terms of informed consent and
a variety of different scientific pronouncements, and I think it's our job as
well as the public's and others' job to really increase that communication and
understanding.
And I
know it's tough to do all this in 10 minutes, and I appreciate the chairman and
the committee and the public for hearing me.
Thank you.
CHAIRMAN
LANGER: Thank you. Any comments or questions? Thank you.
The next
speaker will be Dr. Levin from Brimrose Corporation.
DR.
LEVIN: Thank you very much for an
opportunity. As someone who spent like
almost 16 years in a different industry, I wanted to bring a few things from my
experience in another industry that can be useful, and then share with you some
other information.
My
personal belief is that from our history, we will move in this direction for
more real-time process control, more real-time nondestructive product testing,
and biometric release. I believe it's
going to go there because I think it doesn't have an alternative. The expected results will be high product
quality and security, substantial cost reduction, benefits to shareholders, and
benefits to the public, universal drivers.
Can we
learn from other industries? I worked
16 years in the aircraft engine industry.
Both industries hold people's lives in their hands. You fly up in the air, you are in their
hands. You take a drug, you are in
their hands. Both are federally
regulated. They are very
competitive. They drive their products
with strict performance limits. They
are being chased by generic products behind them. They are also driven to lower prices by government and by the
users.
Okay,
very quickly, aircraft engine industry in the '70s. Product testing was the major quality thrust, backed the
product. Pratt & Whitney, incoming
house testing lab, 600 people. Ratio of
inspectors to operators, two to three, about.
Operators not responsible for the quality; the inspectors are. Statistical process control,
nonexistent. Scrap factory, 20 to 30
percent of the total volume production.
In the
early '80s they made a change to active and statistical process control, became
a major Total Quality Management. Pratt
& Whitney incoming, in-house testing, down to 100 people worldwide. Ratio of inspectors, about one to
eight. This is a huge savings, cost
reduction. Operators now become
responsible for the quality, not the inspector who is supposed to catch
something. Scrap factory down to 5 to 8
percent, it's going down. Quality
increased, engine failures became rare.
This week I really got scared, because what if this American Airlines
was downed by an engine, but it was not, so I kept this slide in.
[Laughter.]
But I
really got scared. Cost, dramatic
reduction. Typical cast blade, I was
involved in this technology, is now 3 to 4 times cheaper for the cost but the
quality is much higher.
Where is
the industry today? I think I can skip
this one because you were already told where we are today, so I don't need to
say much about it. Still product
testing, on-line active process control is still minimal. I don't know what the range of QC to
operators are, maybe one to two, I don't know.
Statistical process control, I was told practically nonexistent. I don't know what the scrap factory is, but
you were told today it was about 20 percent, something like that. Still too many recalls, 200 about a
year. Product uniformity still an
unresolved issue.
Can we
learn? Yes, we can, because the drivers
are the same drivers for the change, the government and customer, pressure to
reduce cost to operate, competition, performance, pressure to maintain
profitability for shareholders, sense of "dead end" in doing more of
the same. This is a huge driver. And the thing that today we see that there
is a sense that if we keep on doing the same thing, more and more and more,
it's a dead end. And the FAA provided
strong support, anticipating the benefits to the public. Being a Federal agency, they thought about
the public, and it's their duty.
The
conclusion that I draw from that is that the pharmaceutical industry will
follow the same path taken by the aircraft engine industry in its bid to be
more cost effective and, above all, more profitable. After all, you got to make money; otherwise, nothing happens, and
we know that. So the facts are, same
drivers, the FDA is providing now increasing support, realizing the benefits to
the public, and we have Ajaz and other people, and the industry is getting
again the sense of "dead end."
How? The question is, how we going to do
that? And there is more than one tool,
and we have seen some of them, but I still think that NIR is probably the most
significant, and as success will create new and improved tools, soon we will
not be able to understand how we could do it otherwise.
Why is
NIR so important? I think it is the
only tool that really provides significant chemical and physical information on
the bulk of the product, not just the surface.
It is the only method that penetrates tablets and capsules for complete
characterization. And it provides
information on all ingredients, not just the active. Is a tablet good if some excipient missing? I think it's not. If it was there to begin with, it's supposed to be there when I
take it, so I like it to be there.
Sorry,
forgot to turn mine off.
DR.
NEREM: That's your timer.
[Laughter.]
DR.
LEVIN: No, no. Sorry.
Forgot to turn mine off.
Why is
NIR, once very quickly, why is NIR so good?
Because it penetrates. The light
that goes into, either into reflectors, into powders made in a blender or any
other operation, it penetrates to a depth between 2 to 4 millimeter. It doesn't just scrape the surface. That's why it is so important, being a tool
that tells us enough information on the bulk of the product we are processing.
Now I'm
going to represent my company. I don't
own it. Why then is NIR so
important? It is very fast, and people
say today we need speed. It is simply
rugged, and it was tested dropping on the floor, kept on working. It's a dual beam for real-time ratio, so we
don't have to stop anything for taking some reference spectra from some
reference sample to do some adjustment.
It is always dual beam, giving real-time ratio.
It is
full scanning, to provide information on all the ingredients, not just the
active. It comes with a full computer
on board, so you can process as many algorithms as you may want. And it's miniaturized to do blenders,
battery operated, you will see immediately.
It is insensitive to ambient light variations, so it can operate in any
ambience without any consideration to what's happening around. And it is backed by 21 C.F.C. 11 tested from
Brimrose.
It's
important because I think it's the only analyzer that can do them all from one
company. We can do incoming raw
materials, fluidized beds, rotating blenders, tablets and capsules, various
lyophilizers, spray dryers, blister pads, transdermal patches. So you have a company that has one source
for every possible application that you may want. Why would you want to go and use application A from manufacturer
A, application B from manufacturer C?
We will provide complete solutions for every need.
I turned
it off, I swear I did.
CHAIRMAN
LANGER: Now I think it's getting to be
the time.
DR.
LEVIN: I turned it off, I swear.
CHAIRMAN
LANGER: Dr. Nerem reactivated it.
DR.
LEVIN: This is all the material I need,
but we also have ability to connect it to a multiplexer, so you can have a
multiplexer for doing more than one location with one analyzer.
This is a
typical installation in a fluidized bed.
You can see the globe, but we have done these fluidized beds not only
with globes, we have done fluidized beds with what we call the free space, and
we have an installation running now in New Jersey on that.
This is
our miniaturized spectrometer. It has
two batteries. It's only 18 inches by
16 inches by about 4 inches. It has got
a complete computer on board, so you can process more than one algorithm. It can be mounted on blender, it could be
mounted on fluid bed dryers, it can be mounted against a bio line if you want
to test bios, if you want to do reflectance on tablets.
CHAIRMAN
LANGER: We're at 10 minutes. Can you wrap it up in a minute?
DR.
LEVIN: Yes, just one more slide. And this has radio transmitter, this one has
a radio transmitter to stop the blender.
So all the processing of the data is done on the spectrometer. We don't need to transmit data.
To the
last one, I think. This is a tablet
analyzer doing final testing before shipping.
You can see again the whole spectrometry is in this case. It is operating on 24 volts coming from this
cable, and has internal cable to connect to a site computer, but during operations
you don't need the site computer, because actually during operation you have a
model, an algorithm that you use on the spectrometer for decision-making, and
it links the, connects the decision to some other. This connects automatically to a tablet press, and it sees the
tablets from the press without the contact of hands, so it's automated and can be stored in a remote room or anywhere
else.
I think
that's the last one.
CHAIRMAN
LANGER: Well, it's the next to the last
one, but we're at 11 minutes. Why don't
we wrap it up?
DR.
LEVIN: This is a typical
multiplexer. That's it. Thank you.
CHAIRMAN
LANGER: Any comments or questions? Thank you.
The next
talk is by Robert Chisholm from AstraZeneca.
MR.
CHISHOLM: Good afternoon,
everyone. My name is Bob Chisholm,
International Technology Manager for Engineering Science and Technology for
AstraZeneca, and I am based in the U.K.
First of all, I'd like to say how pleased I am to be back in the U.S.A.,
in Washington. Unfortunately, it's only
for one day, but it's very, very nice to be back here.
What I
would like to talk about I hope will supplement and complement some of the
excellent presentations that we had this morning, and maybe help you answer
some of the questions that I've heard posed.
I'll keep this down to 10 minutes, so I may speak very quickly in my
Scottish language, so you may find that incredibly difficult to
understand. So if I need to slow down,
tell me to slow down.
What I
want to talk about is TQMS, which is the AstraZeneca Total Quality Management
Strategy in our facilities, and it's a very statistically based end process
control with real-time quality assurance, and it's about a plant that we have
designed and built in Germany, and I'll tell you all about that.
What do
we do just now in pharmaceuticals?
Basically, traditional QA means that we validate processes, the usual
three batches, etcetera, etcetera, and then we run them under standard
operating procedures, virtually no end process control for a long number of
years. We supplement this, of course,
by testing a very small number of samples at the end of each batch, and that's
our QA assurance, and typically that could be 10 samples out of a million, two
million. Taken in isolation, clearly
that is not statistically significant.
The way
forward, I think, for future products, the way we would like to go, is TQMS,
which you have heard a lot about, I think, already. It's real-time end process monitoring and control which is being
made continuous, and its real-time quality assurance which is statistically
based throughout the batch.
In our
particular case that would be done automatically, but you could also do it
at-line, so you're taking samples all the time. So you actually have an increased testing frequency, and that
increased testing frequency which is statistically based, provides you the
platform to discuss with regulatory authorities so-called parametric
release. A term which I don't like, by
the way, because we actually increase the testing, not decrease it.
Okay, how
do we do this? Well, I think first of
all in any pharmaceutical company you've got to have the sponsorship of your
senior executive team or you won't succeed, because it is often harder to
change your own company than it is to talk to any regulatory agency, believe
me. There's a lot vested interests in
the companies. This is a paradigm
shift, and if you don't have the cooperation of your own board, you can forget
it in the industry.
We have
created a process on what we call Technology Center of Excellence, which is
based in Sweden, and they are looking at the whole range of methods, not just
near infrared, and the product development using these methods. But the thing I want to talk about today is
related to the Center practice. We have
built a plant in Germany, in Plankstadt, which we sanctioned early '99, and we
have integrated TQMS at this plant, and I'd just like to show you that. So this does actually exist and goes live on
December the 1st.
Okay,
what have we done? Key process operations
are now statistically in process controlled and monitored, so that
identification of all raw materials in the dispensaries, things like control of
fluid bed driers on line, continuous end line monitoring of blending similar to
what Steve showed you earlier on--okay, and that's end point control of
blending. What that does, that's in
process control. That ensures that
everything that you put into that tablet press is in spec and is the way you
want, and the blend has been correct every time.
We then
have the tablet analyzer automatically within the tablet press, and again it's
looking at the tablets which are going though check, so it is monitoring tablet
quality throughout the batch. That in
itself is a big paradigm change for the industry. We've also designed a 21 C.F.R. 11 data management system to go
along with it, because with all this data on all these spectra, compliant data
management is clearly of the essence.
And through that, we believe that we have real-time continuous quality
assurance.
This is
the actual architecture, and it's so complicated on this small screen I can't
see it, so I'm going to have to just talk to it up here. If you look at this, you'll actually see
that the analyzers we've used are by Brimrose, because of the OTF. You'll see there are four Brimrose analyzers
which run the plant.
If you
then look on each analyzer, you will see a panel PC and you'll see actually a
bar code reader also on there, which is attached to each measurement. And these
are managed by an NIR server on the top there, and all the data is reflected to
what we call the PacMan server, which is a system for storing this data in a
correct forum which was developed by our colleagues in Astra.
So to
give you an example, in the dispensary for instance, the operator would come
along. He would log onto his panel PC,
using his password, because it's 21 C.F.R. 11. Having done that, he would then
take the bar code reading, so the batch attributes, hence the panel PC, so it
has the operator's name, all the batch attributes.
The panel
PC then contacts the NIR server, which enables the analyzer to do the correct
measurement and puts any models, etcetera, down into the analyzer. He takes the measurement, the panel PC gives
him the result, and then all the data is automatically transferred from the
analyzer via the NIR server into the PacMan system, so it's in there for
inspection by regulatory authorities or anyone else, for that matter.
The way
we have designed this system, by the way, it's also capable of being inspected
remotely through modem. So someone
could sit in Washington, connect to the modem, with our permission, of course,
this is complete openness, and actually look at that plant as it's running to
check the compliance, which could be a thing for the future.
Okay,
just moving along, you'll see we have our fluid bed drive analyzer there, which
is a dryer end point control. That's
actually the one multiplexed analyzer.
We then have the blender analyzer, which sits in a base station, comes
off the base station, is mounted onto an IBC which is spun, and looks through
the sapphire window, tells you when the blend is finished, stops the
blender. When you put it back on the
base station, the data, the spectra, automatically again transfer through the
system into the PacMan system. That's
all for regulatory authorities or anyone else to inspect.
Okay. And, moving on to the tablet analyzers--I'm
trying to watch the time here and keep this down--there are two tablet
analyzers, two tablet presses. We have
only put one in at the moment because nobody really believes all this will
work, and that's the problem with the industry, I think. But I come from ICI Petrochemicals, and was
very, very used to doing all this sort of work, so it's second nature to me and
my team.
Again,
the tablet analyzer, it's using transmission and reflectance, and all the data
is transferred up and stored in PacMan, the same as with the other systems.
Okay, now
I'm not too sure what other slides I've got in here. I'll just try them. Oh,
yes, that's just a schematic, obviously, of the plant, and that's a solid
dosage facility, which you'll all be aware of.
That's an example of an IBC with the blend monitoring unit actually
mounted on it. This only 120
kilograms. That's why the IBC looks so
small. The whole system just spins
together there.
A tablet
analyzer. That particular one I think
is the one in the lab. You need to have
them in the lab also, because you need to model, and it's much easier to model
with it in the lab. But it's connected
up to use on that system just the same, and is the analyzer that actually sits
in the tablet press. And that's it
actually in the tablet press, I bit difficult to see, I think, but the box here
is actually the analyzer, the tablets coming off and going down to be analyzed
as they pass.
Okay,
that's what I wanted to say to you. As
you see, that plant does exist, so the industry is moving forward. In terms of the actual way forward, our
intention would be, listening to this morning's presentations, our own
intention would be to obviously start talking to regulatory authorities. I'm a bit premature here. The opportunity arose.
We would
chose one of our existing products that we make, which we have five years say
operating experience of, so we have lots of means of comparison. We would model with that. It would be our intention then to run
parallel dossiers, because we can run the plant with or without the system. So we would run near infrared and run all
the existing registered systems, and compile parallel dossiers, and then bring
that to regulatory authorities who we should have been talking to, will talk to
all the time, as a means of comparison.
So if you like that as the sort of pilot project that I think someone
mentioned this morning, then that would be our intention.
So that's
all I have to say. I've cut it down,
obviously. That's normally a one-hour
presentation. But hopefully I got
enough over to let you know what we're doing.
Okay? Thank you.
CHAIRMAN
LANGER: Thank you. Are there any questions or comments? Any other comments from anyone here? Yes?
MR.
WOLD: Yes, Svante Wold from
Umetrics. I just want to emphasize one
thing, and that is that we see a lot of very nice technologies, and that is
essential. You have to measure the
right data. But one also has to tie
everything together. You have to have,
as in the last talk we heard, a data-based system, and you have to have tools
to follow all these data. Otherwise, it
just becomes a data cemetery. And there
exists technology for that, too, and that is what we presented. Thank you.
CHAIRMAN
LANGER: Any other comments?
Okay. Well, thank you all very much. We'll move on now, and we're going to get an
update on the CDRH External Science Review.
At the end of this, we need to vote on acceptance of the report at the
end of the presentation, and Dr. Nerem, who was Chair of this, will lead the
discussion. Bob? This will be about a two-minute thing?
[Laughter.
DR.
NEREM: Actually I was going to use this
time to sell coming to Georgia Tech to do your educational program.
[Laughter.]
CHAIRMAN
LANGER: We'll make sure that's on the
next Science Board agenda.
DR.
NEREM: Well, it's a pleasure to be here
and to represent the committee which produced this report, which we ended up
titling "Science at Work in CDRH:
The Role of Science in the Regulatory Process." The next slide actually shows the members of
this committee. I'm not going to go
over it in all the detail, but I do want to recognize and introduce Alexa Canady,
who was my Co-Chair and who is here to make sure that I'm honest, I think. But it was an amazing committee, and I
believe FDA and CDRH really owe a vote of thanks to all of these people who
just performed in a marvelous way.
In
addition to a note of thanks to my committee members, I want to thank the CDRH
staff members who worked closely with us.
Of course that was at a variety of levels. There were people that really made it happen, and that includes
Toni Marie Nearing who is sitting over here.
Toni, thanks for all you did. I
see Sandy Weininger out there, who helped--I was going to say helped write the
report, in fact should be listed probably as a co-author, but he really was
very neutral in his approach to what we did.
I see Mitch Shein back there.
And there's another person, I don't know if he is in the room. Is Heini in the room somewhere? I don't think Heini is here, but he was also
extremely helpful through the entire process.
And of
course we want to thank the entire management of CDRH and the staff who
participated in the internal/external reviews.
I think all told there must have been somewhere on the order of at least
150 people, and maybe there was more than that, David. I don't know.
Our
objective was really to assess the quality of science across the organization
and its relevance to the organization's regulatory mission. We were not put together as a committee to
evaluate the research going on within CDRH, but really to look at how science
was playing a role and how it could play an even more effective role in
regulatory decision-making in CDRH.
This is
an outline of the report. I won't go
over this in any detail. I'll talk a
little about process. I'm going to come
back to process at the end; talk about the findings under these three
categories; our recommendations; and then some concluding comments.
There was
an internal review process. I think one
of the key issues was that it was decided early on by CDRH that
electrostimulation devices would be chosen as the representative
technology. That is really where we
focused most of our work, although we believe that in fact much of what we
found can be generalized to other parts of CDRH, in fact can perhaps be
generalized to all of FDA.
The
ground rules are indicated here, and I'm not going to go over that in any
detail, but I do want to take this opportunity to commend CDRH for the
substantive nature of the internal review and the spirit in which it was
conducted. I really believe that
internal review, which was a time-consuming process for CDRH, provided the
foundation for them to move forward as an organization and for us to come in as
an outside group and get some insight into what could be done in the future.
In terms
of the external review process, I have already indicated that built on the
knowledge provided by the internal review.
There were really three different meetings, all of which were important,
in my opinion. The first was a preparatory
meeting held in Atlanta, where the External Review Committee came together and
where we really sort of sorted out what we were about, and in fact we made some
assignments at that time in terms of some of the case studies that we would be
involved in.
There was
then the three-day review held in Rockville, July 24, 25, 26, and then finally
a good part of the committee came together for a one-day report writing session
on August 8th. At the three-day
meeting, we began to put together the outline of a report. We made assignments for different sections
of the report, but the report really came together at that August 8th meeting,
and then we had a final draft this past month.
In that
July 24-26 review, there were the case studies; there were role-playing
session, both for pre-IDE and post-IDE; there were omsbud reviews; industry interviews;
and in fact international interviews.
The international interviews being, number one, we had Beth Pieterson
from Health Canada on our team, so we could talk to her directly. But we also were hooked up by video
conference with David Jefferies in the U.K. to get a perspective on what was
going on in Europe.
Now,
under scientific expertise we break down our findings into these different
areas, and I'm just going to highlight some of the findings. The complete report is available, as well as
a copy of this presentation. So let's
move to the next slide, John.
And in
terms of the findings, I mean, to start with we certainly wanted to go on
record as reaffirming that good science is critical to good regulatory
decision-making. Furthermore, as I think
we all recognize, the complexity of applications requiring review has increased
and will continue to do so.
What was
evident to us was, in general, the overall high quality of reviewers, medical
officers, scientists, engineers. Even
so, the expertise across fields is uneven, and that's something I'll come back
to. We also felt that perhaps the level
of expertise among staff about the clinical environment, at least in some
cases, was limited.
Continuing
with the section on scientific expertise, we felt that there was not enough
emphasis placed on the quality of decision-making as compared to the timeliness
and volume of review, and I'll come back to that in the recommendations. Furthermore, there appeared to be a strong
tendency for the Office of Device Evaluation to operate primarily in-house, and
as indicated there, we felt that was at least what was happening in fact,
whether it was not by plan, but certainly that was our perception of the way
day-to-day business was being conducted.
We were
very interested in learning about the use of third parties in other countries,
for example, the notified bodies in Europe.
And as we look to the future, we have a concern as a committee whether
CDRH or even FDA as a whole has the right expertise for the evaluation of
combination products, those products that will be a combination of a device and
a drug, a combination of a device and a biologic, or whatever.
Moving to
the next section of the report, which is the human resource issues, it's
organized by these different categories, and let's go to the first slide of
findings, John.
Again, I
want to note that we were impressed with the quality, professionalism, and
dedication of the staff we encountered.
However, it's clear that there is a gap between the scientific expertise
needed and the competencies of the current staff. There also is a woefully inadequate investment of resources and
providing of opportunities for staff training and development. There are clearly too few staff to carry out
the necessary activities as CDRH now functions.
And for
CDRH scientists, people who not take the track of management, it seemed to us
that there was a lack of promotion opportunities, at least opportunities that
could be somewhat rapidly taken advantage of.
The process apparently to be promoted as a scientist was a rather long,
extensive one.
Moving to
the organizational and process issues, again the report is structured along
these lines, and let me just say a few words about our findings.
To start
with, we characterized CDRH as an organization that was basically
"semi-porous silos." I
suppose the good news is, they're semi-porous.
We're not quite sure how large the pores are. But there needs to be attention paid to that.
There
also needs to be attention paid to metrics about quality, for as far as we
could tell, there appeared to be no quality metrics about CDRH as an
organization or even necessarily the decision-making process. Certainly there seemed to be no system of
retrospective measurement and analysis of specific CDRH decisions.
Now, in
the case study that took place as part of the internal review, in fact that's
one of the things that took place.
There was some reflective looking at things, but that does not appear to
happen on a regular basis.
Also
consistent with the semi-porous silos is the fact that there is no effective
interoffice communication and coordination.
Furthermore, external experts are seldom used beyond those who sit on
existing FDA advisory panels.
And in
the case of combination products, there is no clear pathway or guidelines for
the regulation of these products. There
is really no single entry point for these products.
So moving
to the recommendations, recommendation number one is that CDRH needs to
communicate, both internally and externally, a clear vision of the fundamental
role of science in the regulatory process.
Secondly,
it really needs to rethink, in our opinion, how it carries out its mission,
prioritizing its activities, outsourcing those functions it can, while still
maintaining oversight, and reallocating its resources so as to expand its
investment in science. And as part of
this, CDRH should examine its existing organizational structure as well as
other regulatory models.
As part
of its restructuring of activities, recommendation three is that to enhance the
fundamental role of science, CDRH should assess and reconsider the structure of
the Office of Science and Technology, to focus that office on emerging science
and technology. This will probably
require a separate review of OST, but we believe in fact that OST should be
that part of CDRH that is really leading CDRH into the technologies of the 21st
century, and that we believe requires some restructuring, but since we did not
have a chance to look in depth at OST, we feel a separate review is in order.
CDRH
should develop a plan for enhancing cross-office and interagency communication
and collaboration.
The next
two recommendations, five and six, really come to information technology, and
that may be a problem for FDA as a whole.
Certainly there should be an electronic database for liaison functions
and an internal and external expertise inventory. Furthermore, we believe that CDRH should develop and implement a
formal process for capturing institutional knowledge, so that when a decision
is reached it does not remain in the mind of the reviewer.
I think
an important recommendation is that with the large staff turnover anticipated
in the next five years, and in order to fill gaps in scientific expertise, CDRH
should expeditiously perform an assessment of the current level and breadth of
expertise so as to develop a long-term strategic staffing and recruitment
plan. As an organization, it really
should be looking at where it needs to be five years from now, what kind of
expertise is going to be required, and develop a staffing plan that is going to
allow that to take place.
There
also needs to be the development of procedures and staff development
opportunities to ensure that reviewer mandates for such issues as sample size
or randomized trials are shaped by realistic clinical perspectives and relevant
ethical considerations.
Recommendation
nine goes back to a comment I made earlier, but that is that CDRH needs to
streamline processes that encourage scientific growth within the staff and
provide for a more inviting career path and reward structure for scientific
personnel, people who are not moving into management but are valuable as
scientists within the organization.
There
also should be an encouragement and the facilitation of ODE using internal but
non-ODE expertise, and also external expertise, including the development of
policies that promote a more liberal use of external experts.
As part
of this, CDRH should expand its outreach to and scientific interactions with
both industry and universities.
The final
three recommendations are that CDRH should develop a plan in collaboration with
other Centers for the evaluation of combination products. This plan in fact may require changes in
organizational structure and operational procedures.
Number
thirteen and fourteen really go together, really relate to quality
improvement. Thirteen is really more at
the regulatory decision-making level.
CDRH should implement a quality evaluation improvement program, and as part
of this develop metrics for the assessment of quality as well as the timeliness
of results.
Fourteen
is, at the organizational level CDRH
should implement a quality system with a focus on CDRH as an
organization, and on development of activities that contribute to high quality
decisions and the most productive use of resources.
With
this, let me say a few words about the process itself. These may have a bias of my own. David Feigal and his office actually sent
out a survey form, and I think they are reasonably consistent, but this is my
take on the process.
I believe
that the review, in focusing on the role of science in regulatory
decision-making and not on scientific laboratory research, that that was the
right focus, and we recommend it to the Science Board for use in future
reviews. The deliverable of an
organization like this is not good research; the deliverable is good regulatory
decision-making, and I think that needs to be the focus of these reviews.
The
internal self-study not only provided a foundation for the external review, but
was a significant learning experience in its own right. The external review, as I noted earlier, had
three separate meetings, and I believe that each of these meetings was
critical. The pre-meeting in Atlanta
really allowed the review team to get organized into how they were really going
to conduct their work in a three-day period.
The three-day meeting in Rockville allowed us to carry out the review,
and the final meeting on August 8th allowed us to complete a reasonable first
draft of a report.
In terms
of the components of the process, I thought the case studies were important to
our success, and also the fact that we assigned at the initial preparatory
meeting small teams to investigate each case prior to the three-day review.
The
role-playing, my own view was that the role-playing was not as effective as it
might have been. I don't really feel
like the committee ever got into the role-playing. I don't know how Alexa feels, but I just didn't feel that we
really put ourself in the roles we were supposed to.
The
on-the-spot reviews, that was basically where we could get any information on
any kind of a review decision that had been made, and it was difficult in a way
to intervene in that and get something.
At the same time, CDRH was offering us everything and anything, and just
that gesture by itself was a very clear signal that they were open to us
looking at any aspect of the operation, and I think that was an important
signal.
The
industry interviews were important.
Unfortunately, they weren't all face-to-face, and I think in the future
if this kind of model is used, it needs to be clear that these need to be
face-to-face, these discussions with industry people.
The
international interviews, we thought that was quite useful, both having Beth
Pieterson on the committee as well as the teleconference with David
Jefferies. The CDRH management and
staff meetings are equally important, and we did, particularly in the case of
the case studies, during each of those meetings we asked senior management to
leave so we could meet with working staff without management in the room, and
we believe that was important in terms of creating an environment where there
would be a totally honest conversation.
We also
had a meeting with the union management.
I think that meeting could have been much more useful if it had been
organized well in advance. The fact of
the matter is, it was only at the last minute that we asked for the meeting,
and there wasn't the same preparation, both on our side as well as on the union
management side, and so therefore I don't think it was as useful as it could
have been.
Some
concluding comments. I again want to
commend CDRH for the dedication, integrity, and commitment to excellence exhibited
by this effort. In many ways CDRH is
doing an excellent job. Even so, with
new products arising out of the biological revolution, with breakthrough
technologies which will be increasingly complex, CDRH is facing a significant
challenge.
We felt that
this review was conducted in the spirit of trying to be of constructive help to
CDRH as it faced up to these challenges.
From the viewpoint of the committee, there clearly are changes necessary
if CDRH is to significantly increase the role of science in regulatory
decision-making.
This
slide really has what I think are, of all the recommendations, what I think are
the three key things. First, I really
think there has to be a rethinking as to how the business is conducted. Again, what do you do in-house, what do you
farm out, what are the priorities, how do you get your hands around science and
technology, which every day expands further and further.
Secondly,
as part of this, as part of this reinventing of CDRH is a reinventing of the
staff through strategic recruitment, the continuous professional growth of
existing staff, and policies that reward staff for the quality of scientific
expertise. And that goes back to really
creating a long-term strategy for recruitment over the next five years.
CDRH must
reach out to external resources to create partnerships that will accelerate
making new technologies available that are both safe and effective, and so as
to enhance patient benefit in America.
No organization can have all the expertise, and I think CDRH needs to
more and more use external expertise.
Finally,
the subcommittee review team appreciates the fact that these recommendations,
even if accepted, cannot be put into place overnight, and certainly the way to
go would be to incorporate these in some active way into the strategic plan of
CDRH.
I think
that may be it. Is there another slide?
Okay. Thank you for this opportunity to present
the report, and again, thanks to everybody who worked with us. And I don't know if you want to open it to questions
or whether you want David to have a chance to--
CHAIRMAN
LANGER: What do you prefer?
DR.
NEREM: I'm easy. But I'm glad you asked about Georgia Tech,
Bob.
[Laughter.]
CHAIRMAN
LANGER: Maybe I'll let David
present. There will be many questions
about Georgia Tech later.
DR.
NEREM: Well, particularly since we're
trying to get David's son to come down to Georgia Tech and be a student. Right, David?
DR.
FEIGAL: Well, I need to begin by
thanking Bob and Alexa and the other 10 members of the committee that joined
them for the tremendous amount of time and the thoughtfulness of the effort
that they put in, and I think you probably all appreciate how busy Bob is
likely to be, but part of the reason we met in Atlanta for the kick-off meeting
was, that seemed to be the only way to accommodate Bob's schedule, and we were
interested enough in getting this to move along and get things, that we were
happy to travel down there and begin with the orientation.
This
report comes at a very important time for us, because it's coming at a time
when we have been working on a strategic plan to ask how do we meet the
challenges of the future, and I have presented bits of that to the Science
Board before. Part of that is a vision
that the Center has, that medical devices have a life cycle; that the whole
life cycle is informative in the scientific decisions we made; that in fact
it's a pipeline of multiple generations of products.
There is
a regulatory structure that surrounds that life cycle, but what we really were
asking the team to do was to come in and look at this. And what this is, it's the underlying
science that we think is necessary to do science-based regulation at the
different parts of the life cycle, for all the different regulatory tasks that
we have. And our focus and our interest was not as much about asking how we got
here or why we were the way we were, but really looking forward and saying how
do we need to go from where we are now into the future, and I think that we
appreciated the very constructive approach that the committee took in helping
us think about that.
Let me
pause just for a second to show you, somebody had said something about the
Center. The room was pretty full this
morning but it wasn't the same people.
Would everybody who works for the Center stand up? This is a group that--you can sit down
now--we are very, very interested in where we're going and the help we have
getting there and the comments, and it's a process I think that, Bob and Alexa,
you realize we take very seriously.
As you
pointed out, this began with a planning process that began in November of
'99. It was helpful to me as a new
Center Director. I had started about
six months earlier than that.
Unfortunately, now I've been there long enough that many things are my
fault. If we had had these
recommendations just as I arrived, I would have felt even better, but that's
all right. We'll move forward.
And where
we are today is near the bottom of this chart, and the important thing, part of
what I want to show to you is our strategy for implementation. But before I do that, I actually want to
share some of the things that we did, that you alluded to, with our internal
report process. It will give you an
opportunity to see whether or not we were on sort of some of the same tracks
that you were, because I've taken the documents, unedited, that we provided to
the committee when it first began to meet.
As you
pointed out, we really were interested in the scientific decision-making
process. We think that is our most
fundamental product, our decisions. In
fact, if you hear complaints about us, it's that we haven't decided something,
and then the second complaint is what we did decide. But we're in the decision-making business, and it's important
that we understand the impact, the resources that are required for this to be a
science-based process, how well those decisions are integrated with all the
different processes that we're responsible for, and how the organization learns
from the way that it does its work, and our preparedness for future issues.
I'm a
little sorry that Dr. Skulnick isn't here, because you remember at the last
meeting he said, "Why don't you give us the top 10 list of the best things
about the Center and the worst things about the Center?" We in fact actually provided a slight
modification of that to the committee as a product of the internal review, and
I'm presenting this as one way of summarizing some of the work of the internal
review.
We
presented a top 10 list of the greatest challenges and problems for
science-based regulation at CDRH, and then we also made recommendations of what
we thought we had to do to address some of these. And it may be interesting for you, having heard the External Committee's
recommendation, to take a look and see how self-aware the Center was or was not
about some of these issues. In the
notebooks I have presented these just on one page, and I've broken these out
and organized them so that the challenge is met with our own recommendation.
And so
our first observation was that we're not always recognized as a science-based
organization, sometimes not even by parts of our own structure in FDA. It certainly is not a novel experience to
have Health and Human Services organize a scientific group and leave us off. When they organized the task force for the
Biomedical Engineering Institute at the NIH, they put together a Public Health
Service Advisory Board, and FDA, CDRH was not included in the PHS group that
was to advise the NIH on the scientific needs.
Congress at times really is very--well, they're always very aware of the
freight that we need to move, but they're not always as aware of the scientific
basis of that, and at times that's true of industry as well.
So where
we began with our first challenge--and these are in rough priority order--was
that we need to communicate our scientific vision and the scientific business
for our regulatory actions. It isn't
adequate to simply say we're doing something because of precedent or level
playing field or because we said so. We
need to make it clear that these are science-based. We also need, and this is a request from you, we need advocates
for our scientific role in medical devices and radiological health, and there
are ways that you have been doing that.
The second
comment that we made when we were being self-critical of ourselves is that the
Center leadership, meaning me and the senior people in the Center, do not
always communicate science as a priority.
I think we're always quite clear about meeting performance deadlines in
some of the goals, particularly the ones we report to Congress or with a trade
press or an industry track.
But we
miss opportunities to create the resources and time for our scientists to have
the training. We don't create the
expectation in our own staff that part of their job is to stay at the top of
their game and stay current. And the
budget in our resource planning has often been reactive and short-term, and we
need to walk the talk and show that science is really a priority to us. Our recommendation sort of is the mirror of
the observation.
We are
also very aware of the fact that the CDRH's scientific staff is graying. This year we actually saw the retirement of
the employee who was the longest working employee for the agency. He has worked for the agency for 62 years,
and I hope he's enjoying his retirement in Florida. But one of the real challenges for us is that there are time when
we go through waves of hiring and long periods without hiring, and that gives
us waves of retirement, and this is both a challenge and an opportunity.
And one
of the elements of our strategic plan is one that we call Magnet for
Excellence. We borrowed that concept of
being a magnet from the magnet school system.
We really want to be able to attract the type of employees that want to
help us accomplish our public health mission.
And I really resonate very well, Bob, with your phrase "strategic
recruitment." We really need to
not just think when we lose someone, even though that person was doing valuable
work and had built up an in-box that now needs to be taken over and a specific
area of expertise, we really need to look and say "What do we need
now?" That person was hired at a
time when we needed that. And we need
to think about what the process is, because if we just backfill position by
position by position, we will be configured the same way in five years that we
are now, so we need to think about how we're going to do that.
The
budget policies of the last eight years markedly reduced our operating dollars,
as we were absorbing the salary increases, and the good news that you heard
last night from Jeff Weber is that in this year's budget in fact we don't have
to absorb 4.6 percent of our staff in order to pay for the appreciated pay raise,
but it's even more appreciated when they give us the money for it.
But I
think the concept for us is that it really doesn't matter if we're rich or
poor, we have to have the same scientific values and the same approach to
scientific problems, whether it's a year where we have some budget flexibility
or some budget challenges. And we need
to really look at how to take care of our existing employees to make them as
effective as they can.
There was
a very nice comment by one of the members of the Science Board who couldn't be
here today. Earlier this week there was
a meeting at the University of Maryland.
I think they beat Georgia Tech, didn't they this year, Bob? But there's always the basketball
season. We'll see how this goes.
DR.
NEREM: We're even better in basketball.
DR.
FEIGAL: But the comment that was made
is that art is "I" and science is "we", and we really train
people almost as artisans, as apprentices.
They work with a small team.
They learn what that team does, how it works. We really need to take the strength of the scientific method,
which is really a group process, a process where everyone learns from each
other, we need to identify much more systematically, particularly with
employees whose jobs are changing, to identify the core competencies and the
type of experiences that will develop them as scientists and create flexibility
in our scientific work force to meet future challenges.
Our
current system actually tends to have a system where people almost need to
burrow in to get promoted. If you're
not going to be a supervisor, then you need to become an expert, and an expert
often is someone who--it's more of that "I" model, where you are the
expert. You are the one that has the
knowledge and doesn't share it. And one
of the things that has happened as part of the strategic plan and part of our
grappling with this, is that we have actually created and gotten approved a
program called the Master Reviewer that supplements the expert path, that
rewards breadth, and a different type of experience for promotion. It's a program that Janet Woodcock had in
CDER, and then we have actually crafted our own version of it which is just now
being launched.
There is
the very real fact that premarket deadlines, acute problems, squeaky wheels, meaning
any type of, sort of contentious situation, often dominate resource allocation
in a way that can leave programs disconnected and sometimes out of
balance. One of the hardest things for
us to figure out is, what's the right size for different parts of the unit,
because everyone is busy and everyone could do more with more resources. And are we just putting it where Congress
squeaks or where a group of manufacturers create a lot of public attention?
We need
to have our own vision of sort of the public health mission, and be able to
balance and prioritize even through that.
Even though we must meet these deadlines and must deal with these
problems as they come up, we need to more deliberately prioritize our work
proactively, rather than just being reactive.
Scientific
communication opportunities are under-utilized, whether this is with our
scientific peers, whether it's medical device users or the general public, and
this hides what we know. It hides the
knowledge that we in fact manage, and limits our mission effectiveness. And so one of our real goals is to
understand better. I really appreciated
the earlier public presentation on risk management and risk communication. That's something we think a lot about. And the public's hunger for knowledge is
illustrated by the fact that nearly a million people will read the Lasik web
site this year.
We solve
many problems too slowly in a rapidly changing world. Some of our decision-making is timely, particularly the ones
where the rules are set out in advance that say, "You send us this kind of
application and we'll review it in that many days." But there are other kind of problems that
are much more difficult, and we need to really be able to set goals, choose
important problems, assess how to measure the impact in those areas, create the
team needed, and then be accountable for timely results of the efforts. And we're going to need to learn to
prioritize and do that.
We agree
with your comments about the way that people's work is reviewed, whether it's
the quality or the impact of the decision.
Peer review is under-utilized as a method for prioritizing our efforts
for evaluation. And usually when we do
evaluation, it's through the usual hierarchical supervisory structure, and I
think this actually misses an opportunity for people to be reviewed by their
peer, to look at the incorporation of science into the decision-making.
I think
that this is all the more important as we make the results of our decision, not
just the decision itself but also the logic behind it, as we start publishing
our summary basis of decisions. You
know, the science is laid out there bold for everybody to see, and we need to
take advantage of that.
And then
finally, and again I think is very concordant with one of your recommendations,
scientific partnerships with the NIH, the National Academy of Science,
universities, professional societies.
Many of these exist, but they are under-developed. We could do much more with them than we
currently do.
And so
that was our top 10 list and our 10 recommendations that we gave last
spring. We put together sort of a
different structure for this review, and we were sort of making it up as we
went along. And so one of the things I
would be happy to show you is the survey that Dr. Nerem alluded to. All 12 members would have responded, but one
was on travel and couldn't be reached.
And this is in your packet, in a handout we gave at lunch time in a
tabular form that I've reformatted for the slides.
One
question was, was it the best thing to open the scope of the review to be the
entire Center and not, for example, just to limit it to the research
programs. And that, after the fact,
after the review was over--this was a five-point scale where the green at the
end is a five and blue is a four and yellow in the middle is a three and so
forth--and so you can see that actually that was a concept that resonated well
with the committee. They agreed with
you that the meeting in Atlanta was useful, and a complement to many of the
people here in the room, that the background materials on the mission and
organization that helped jump start that process were useful.
Case
studies. We asked separately about the
concept because we weren't--we also, particularly as we looked at the different
ones, there were different levels of execution. I think the committee got a little better into the pre-IDE one
than the post-marketing one. And the
most useful thing, and you'll see this theme again, was being able to have
access to interview them about the process.
Materials, they are, I mean these are complementary marks, but clearly
the staff interviews were the most valued.
And the concept by and large seemed to work, whether or not--you know, I
think we could have improved the execution, and some of the problems at times
was trying to get it all crammed into three days.
On-the-spot
concept didn't work as well, and the committee agreed with you. And again, the thing they liked the best was
having access to staff, to talk to them about specific decisions that came
up. The role-playing didn't score as
high as some things, but still complementary.
The interviews, and the importance of having a session to come back and
collect your thoughts about a month after the three intensive days, and not try
and do the writing in that same session, I think was a strategy that the group
liked.
We asked
four open-ended questions, and we've given you all the responses to that in the
handout, and I won't--they are on slides but I'm actually going to skip them,
partly because the slides are unreadable, but also so we can have some
discussion.
DR.
NEREM: Your time is about up.
DR.
FEIGAL: Oh, is my timer going to go
off? Okay.
So what
are the next steps for us? One of the
things that we did is, we established a CDRH Recommendations Committee, a
committee to go over the Science Review Board recommendations and to make
recommendations to the senior management and the team that's developing and
continuing to develop and implement the strategic plan, to really look at how we
incorporate these recommendations into our other activities. And let me just acknowledge this group.
You will
notice this group has, if you know our alphabet soup, which Bob and Alexa now
have memorized, there is someone from all six of our offices. And because of the emphasis on quality and
quality systems and peer review, we actually have quality systems experts
because it's one of the things we inspect industry on, and we've actually asked
them to take a look at us. One of our
one-liner goals for ourselves sometimes is, "Gee, we'd like to be good
enough to pass an FDA inspection."
We have
scheduled a go-away for our division directors in December, and one of the real
focuses there is going to be to particularly look at the human resource issues
and the kinds of things that we can do already at a local level. And the focus of that day will really be to
ask the division directors, what can I do in my own shop now? If I were to say things that I could take
and implement all by myself for the family of staff that I'm responsible for,
what is it that I think I can accomplish for the next year? And then, of course, they can also lean on
the rest of us, to let us know what kinds of resources and support are needed
for that.
And as of
this afternoon, we're posting this report.
We really welcome the report, and we even had a preview, you know,
because Bob was kind enough to come up and present this to the office directors
two weeks ago. We knew what we were
posting. And we have arranged to have
videotapes of your presentation and this afternoon's comments replayed in the
Center, and will be available for people.
What we will ask the CDRH Recommendations Committee to do is to
prioritize the recommendations, to identify which are things that are short-term
and which of them are longer term goals, as I mentioned, to make these
recommendations on how to merge into the strategic plan.
I think
one of the themes that you developed, I would just like to sort of comment a
little bit about at a high level, sort of how I see the strategy. And I think in some ways it begins to change
the way that we think about doing the business, even though many of the
elements are there, and many of the things that you ask us to do are not things
that we don't do at all, but we do them as you describe, in groups that sort of
work more or less autonomously. They
actually pull together quite nicely in a crisis, and I think you saw evidence
of that when we presented some of the cases, and there is quite a bit of
interaction, and when they need to get together, they know, the staff knows how
to do that.
But I
think one of the things that your recommendations make clear is that we would
be more effective and much more powerful as a scientific group if we could knit
it all together. And one of the issues
is how do we deal with new technology.
We've had several on the horizon.
One that gets mentioned sometimes, very often, is the revolution that's
going to occur for genomics, and our part of that will at least be diagnostic
testing. Over 1,000 diagnostic tests
for genetic diseases are under investigation and are available now that weren't
available five years ago, so it's really an area that is exploding. And ask us if we could do 1,000 PMAs in a
year.
Well,
part of the process, this is sort of--you know, I think what your challenge to
us would be is to get down to the nitty gritty to do this, is to have a process
that scans the horizon. We have done
that, and some of the responsibility for that actually has been OST, to
identify the kinds of technologies that are coming along.
One of
the first things industry always wants to know from us, though, is what's the
regulatory path, and that's sort of one of the complaints often, is that there
is this down time while they try and figure out how they're going to get this
product to market, and whose product is it?
It is going to be Kathy? Is it
going to be us? Heaven forbid, both of
us? And they probably haven't come up
with four-Center combinations yet, but I think we've had a couple of
three-Center combinations.
And this
is the time, shortly after that, to begin identifying the external expertise
and using external expertise. That is
the best way to actually build that expertise into our own staff and our own
workings, at a time before we have much action. So while I mentioned that we actually are at the point where we
have work for geneticists on the staff, but for a long time it was on the
horizon, it was coming, but there weren't any products, people weren't talking
to us.
But I
think this is something we often don't do, and we haven't done aggressively, is
to really identify how do we find the external experts and really build them
and make them part of the team, and then at a point when a product area becomes
busy and begins to pan out, to build internal capacity and develop our own
staff. Some of that initially would
logically be retraining of people that have done similar types of things. That is how we have had to deal with many of
the issues of bioterrorism, is to look at the skills mix of existing staff who
really weren't doing bioterrorism before and say, how do we now turn you in
this way?
And then,
finally, I think we need to begin to consolidate a team that works across the
whole life cycle. We're often actually
not too bad at taking a new technology and getting it to market. But if it's a brand new technology, we may
not have thought yet about the human factors, about the post-marketing
problems, about how rapidly the generations of that product are going to change,
what the issues are in terms of risk communication and communication about the
products. And I think that we are
beginning to pull together a conceptualization of sort of how we need to do
business in a way that explicitly takes on new technology, and doesn't just put
us in the reactive mode of waiting to see what comes in and what gets filed.
As you
know, we have presented before in a brief form the theme areas that we
developed about 15 months ago for the strategic plan, and one of the good
questions you can always ask of strategic goal areas is whether they serve you
when you get a new challenge and have something that you need to do. And actually I think that many if not most
of your recommendations fit well into groups we have organized to work on these
issues.
The
semi-porous silo issue is a quote I liked enough that the staff have already
heard me repeat it as the characterization of the Center. It's something that we are aware of, as we
look at the need to work the Total Product Life Cycle, and are aware of the
fact we don't quite do it yet. We do it
with handoffs now, more like a relay team than a team all pulling together.
The
Magnet for Excellence to really develop our staff and human resources is an
issue not just for recruiting new people but developing the very talented and
dedicated people that we have.
Knowledge
management, and where these two things meet or how to develop expertise
databases, there are some very interesting tools and technologies out there now
that may make this more helpful.
And then
the final area is meaningful metrics, which is that we really want to be able
to measure the impact that we have when we take something on, not just do it
because we think it would be a good idea, but actually to be able to say, what
is it that we're hoping accomplish with this?
So, for example, if we have a mentoring program, it's good to have
mentoring programs, people in them like being in them, but I would like to then
ask the question a step further: What
are we trying to accomplish with that, and how do we know if we have a
successful mentoring program? In my
mind, one of the things it needs to help us do is transfer some of that
institutional knowledge and help us with succession planning, because a lot of
our retirement will be with our more senior people in the Center.
So, you
know, in short I think the other way to come back and ask whether or not our
efforts to do the internal review and the advice we got with you really stayed
focused on the core thing about the Center, which is our mission, which is
really pretty straightforward: promote
and protect the health of the public; safe and effective medical devices; safe
radiological health products.
And I
think both of us are actually on that, on that mark. I think that there are things that, as you said in one of your
slides, were not things we would accomplish overnight. There actually I think are some things that
we should be able to start on very quickly, and I think one of the things that
we need to do is to really identify where we want to go and what we think the
challenges will be to do that.
And we
need to do that without saying, "Well, we'll do it if we get a good
budget," or "We'll do it if we get these new things funded," or
whatever. These are things that are so fundamental
to the way we do business, we have to take a look at our resources and say,
"Hey, we've got 1,000 people in Rockville, 1,400 people nationwide, a
budget of about $140 million. We ought
to be able to do something with that."
Let me
just close with a thank-you for all your time.
I hope you will expect a progress report from time to time, and we
will--we are starting on this activity already. So thanks very much.
CHAIRMAN
LANGER: So, comments or questions for
David?
DR.
NEREM: Alexa, did you want to make any
comments?
DR.
CANADY: I just think that, sitting here
this morning, many of the issues that we discussed this morning are directly
applicable here. So I think it--but the
key issue I see is the need to support with education and training the existing
staff, as well as the new staff. That,
like in most places, loses out to number counting and just budget
deteriorations, and I think it is critical in a time of technological advance
like we're in now.
CHAIRMAN
LANGER: Comments from people on the
Science Board, or from the audience?
DR.
KANTOR: Can I make a comment? I am Gideon Kantor, Adjunct Associate
Professor of Biomedical Engineering, Catholic University, and as I said before,
until '95 part of FDA.
These are
excellent reports, but I would like to draw attention to a point that I think
was part of the report but maybe not as emphasized as I like to do it, and that
is linkages. Linkages are extremely
important. Now, for that purpose I have
mentioned briefly before that you need a meta search engine, and what I'm
talking about is that the different offices are looked at from the keyword
point of view. What are the keywords
that identify the differences in their subdivisions? Then all the computer does is link those keywords together.
Now, let
me give you an example. For example,
medical device panels, they are the categories of medical devices in terms of
clinical applications. At the Office of
Science and Technology there are breakdowns in terms of science and
technology. Obviously the medical
devices contain some of the components of the Office of Science and Technology,
so that's just one example.
For
example, you have an implanted defibrillator.
You are concerned about particular technical issues, say interpretation
of signals, say safety of equipment. If
you have these keywords, you could easily link them.
So what
I'm proposing is the following: that
each office and subdivision looks for some keywords that are common to other
entities of the organization, and then when you have established these
linkages, establish a panel of experts that validates these linkages.
I know it
is a new idea, and a lot of people are opposed to it for many reasons. I think many of them are good reasons, but
when we look into the 21st century with the information explosion, we need to
put some order in the complexity that surrounds us. And just looking individually at issues is a very good idea, but
it is beyond sometimes our capability of our brain, that which decision scope
has not been increased.
So I very
strongly believe in this, and I hope that people tell me if they do not believe
in it, because at least I can learn from these. Thank you very much.
MR.
BENSON: I'm Jim Benson with Avimed, and
I think this is not on but that's probably okay if you can hear me.
DR.
NEREM: You have to lower yourself, Jim.
MR.
BENSON: I have to lower myself? I thought I was raising myself when I came
to this meeting.
[Laughter.]
Just for
the record, I went to Georgia Tech and the University of Maryland.
[Laughter.]
Also, I
didn't know whether to stand up when David asked for people in the Center to
stand. I was a little torn there.
I want to
just say a couple of things. One is
compliments to this Board for establishing this look, and specifically to the
subcommittee which Bob chaired, and also very much to the center, to David and
the folks in the Center, because from my own experience at FDA, introspection,
organizational introspection isn't always a fun process, and so I think
everybody should be complimented for that.
A couple
of specific comments, if I may. One, I
think the emphasis on looking at new technology, the exploding, I think that's
a critical step. The concept of OST
looking at, paying maybe perhaps more attention to new technology, perhaps
along with that letting go some of the ongoing projects, I think can be a
challenge and a very exciting one. I
think looking to the outside for help for the existing expertise in the Center
is terrific. I think that budget is a
problem there, but I think there are ways that the budget can get increased, as
well as under existing budgets to be able to enhance that.
I noticed
in Bob's report, you included industry, scientists in industry as part of
that. I would encourage David to
include that in his outreach slide. And
I'm not nit-picking here, I just think the concept is important.
If the
agency wants, for example, to really take a look at new technology and some of
the problems associated with that, probably if you look to the industry as well
as to academia and other institutions, that combination I think can be
enormously helpful, and we really need to figure out a way to accomplish
that. Thank you.
CHAIRMAN
LANGER: Other comments? Anybody on the Science Board, any questions?
Well,
then we are supposed to decide whether we want to accept this report, I guess.
DR.
FENNEMA: I would move acceptance of the
report.
DR.
PRINCIPE: Second.
CHAIRMAN
LANGER: So why don't we vote? It has been moved and seconded, so we're
going to vote on it.
DR.
SCHWETZ: I did have a question, but Bob
and Alexa, I want to thank you very much for all of the work that you obviously
put in, and you took this very seriously.
You were innovative in responding to what David came up with as an
innovative approach. So on behalf of
the agency, if we have a good review of a component, it helps the agency
broadly. So I thank you for all of the
work you did as well as the rest of your team, and we will get thanks out to
the rest of the team as well.
My
question is this: These reviews were
not meant to be the end, they were meant to be the beginning of a process. Having taken this innovative approach of
taking one product line from top to bottom, as opposed to the horizontal
approach that we've taken in other Centers, what do you recommend as a
follow-up? Do we go in greater depth to
this, or do we go horizontal, or do we pick another piece and go vertical?
DR.
NEREM: My own view, and Alexa may wish
to comment also, but I think, I really believe that the most important part of
what happened was the internal review that took place. And I think that somehow needs to be brought
into, if you wish, business as usual.
It's part of one of our recommendations of taking a reflective look, not
to criticize people for decisions that may or may not have been made but simply
to look at what has been done and use that as a learning experience so as to do
things better in the future.
And
certainly there are other areas of CDRH where the report card might not be
exactly the same as in the electrostimulation device area, so it's important to
look at these other areas. I don't
think that requires an external team to come in. I think that's something that can be built into a regular
internal review process, and maybe each year look at a part of what's going on.
DR.
CANADY: I really agree with everything
Bob said. I would add one piece. I think that it was valuable for the members
of the CDRH to have an opportunity to talk without management present and make
arguments, and that you can't really get with the internal review process, but
I agree that the internal review process was critical. We could never have gotten this far. We would have spent a lot more time trying
to understand things if we did not have the internal review process.
DR.
SCHWETZ: I just want to give credit
where credit is due. Dr. Fennema was
the one who had the idea that this was an essential and critical part of the
review process, and we have used it since he provided leadership in a review
team of CFSAN. And when that was
brought back to the Science Board, it was approved as an institutionalized
process.
So I have
always felt that the internal review is the most beneficial part of any of
these reviews, and what you get from the external reviewers is additive to
that. But the reality is getting your
own people internally to recognize what they're doing and what they haven't
done and to deal with it. And I would
say that we are going to continue to have these internal reviews as we go
through the rest of the Centers, and I would encourage that, to the extent that
they are useful internally in the absence of an external review, that we would
look at that as well.
So, Owen,
thanks for an idea that has become very beneficial to us.
DR.
NEREM: But in addition to this being
used as part of the Science Board
review structure, it also could be built into the business as usual of the
Center.
CHAIRMAN
LANGER: One question I had--go ahead.
DR.
FEIGAL: I was just going to comment on
some of the processes that we plan to take forward. We actually appreciated the suggestion to actually now do a
review of OST. We think actually this
larger view now actually gives a context to look at the research efforts both
in OST and in some of the other areas like epidemiology where we have specific
research projects, and we can actually look at them.
Another
effort which has been going on, and actually has an external component as well,
has been for us to look at the Radiological Health Program, since this Center is
the merger of two different programs with different authorities and different
laws, and we didn't really try and do the Rad Health Program, except there was
some overlap. And so those are two
activities that will be extensions or continuations of that, in addition to
tackling some of the explicit issues from this report.
The
internal review was definitely something that we did get from Dr. Fennema. We actually hadn't initially planned to do
it. We had an internal group preparing
for the external review, but we actually pulled a separate team together that
was more senior than that group and asked them to actually prepare the internal
review report, and it was the right decision to do that.
CHAIRMAN
LANGER: Any other comments or--yes?
DR.
ROY: Suva Roy, Otsuka Maryland Research
Institute. I have never worked at the
CDRH, but I have worked in the Center for Devices. One of the things I would like to see perhaps this meeting
address, and that is the qualification and experience requirements for reviewers. Many of the job descriptions, at least I can
speak from the Center for Devices, many of the job descriptions were written 30
years ago and it has really not changed, or the experience or qualification
requirements. But if those things are
not updated, the Centers may not be able to attract or retain the best possible
people. So you can retrain people, but
it's like somebody said, you cannot buy a Volkswagen Beetle and expect to run
it like a Porsche. You have to have
something underneath to work from.
Thank you.
CHAIRMAN
LANGER: Bob?
DR.
NEREM: Yes. On that comment, I mean, I think as part of really doing an in
depth look at the kind of staffing needed five years from now and strategic
recruiting, you really have to look at how different positions are defined.
The other
thing I wanted to comment on was Jim Benson's comment. I mean, we specifically included industry,
and I noted it was left out of your slide, David. I realize that industry on the one hand is what's being
regulated. On the other hand, for
certain technologies, the expertise is actually out there in the industry, and
if you're going to learn about those technologies you have to take advantage of
that, and you have to somehow walk that balancing act.
CHAIRMAN
LANGER: Okay. Well, thank you very much.
I think that's an excellent review.
The next
thing is emerging issues and FDA's oversight of clinical research, and David
Lepay will discuss that.
DR.
LEPAY: I'm going to change the focus of
attention a little bit here. What we're
going to talk about for the next 20, 25 minutes are clinical trials, the
conduct of clinical trials and the oversight of clinical trials, and some of
the events that are taking place here within the agency and in our interactions
with the department.
I think
first and foremost, though, when we start off here we have to give ourselves a
very large round of applause for the progress that has been made over maybe the
past 25, 26 years in the area of clinical research. If you look back, it really is very much since the mid-'70s that
certainly most of the infrastructure that exists today for the oversight of
clinical trials, for IRBs, has been put in place.
The
Belmont Report, which specified many of the ethical underpinnings of our
current models, is less than 25 years old.
The true implementation of evidence-based decision-making at the agency
probably has taken place within the last 25 years, even though it was put in
place with the Kefauver-Harris amendments to the FD&C Act. And even our standards for research conduct,
10 years ago we hadn't really defined what good clinical practice was in the
agency, and it was only when we began moving internationally into harmonization
that we began to move forward in that direction as well.
And,
similarly, we have seen a lot of attention to quality improvement, quality
assurance systems in this period of time, and ultimately a very significant
improvement in the quality of clinical research as FDA has viewed this in the
course of our own oversight, in the course of our own inspection system.
In 1977,
the first year that we began looking at clinical investigators and clinical
trials, we were seeing certainly quite a number of problems, and the percentage
at least--granted, we didn't do very many inspections back in the '70s--the
percentage of what we are seeing now in terms of major problems, the red there
on the graph, is down on the order of about 2 to 3 percent where FDA has to
come in and take official action in clinical trials. But that is a percentage change.
We
certainly know that the clinical trial landscape has changed markedly over the
past 25, 27 years. We may see fewer
percentage problems, but we know there are more sites, there are more special
investigators. We know that from the
standpoint of trying to get good clinical data on populations that will be
using our products, we have needed to go forward and encourage the enrollment
and recruitment of subjects from more vulnerable populations than we ever
have: children, the elderly, ethnic
groups.
We have
had to face changes in the whole clinical trial system, the way it's conducted,
the outsourcing of trials, new technologies, not only from the standpoint of
how information is acquired and transmitted by electronic means, for example,
but certainly also new technologies, as science has advanced to the point where
basic science moved into clinical research, and we have certainly a more
sophisticated level of applications that we're seeing now for review at both
the research permit, the IND stage, and at the NDA stage. This is very much an area of global
expansion.
Well, we
certainly know over the past few years we've seen a large number of calls to
action in the area of clinical research, a great deal of press attention. I can't say that the IG report back in June
of '98 was by any means the first, nor had we not recognized some of the
problems that the IG reported back in '98, but it began to certainly
consolidate thinking and bring a great deal of public attention to this area,
to the concept that institutions were having difficulties in their oversight of
clinical research. Resources weren't
adequate at the institutional level.
IRBs were overworked.
In
reports in the New York Times, the concept that we still have cases of very,
very marked clinical investigator fraud.
We still have deaths in clinical trials. Some we would like to think perhaps are preventable, and indeed a
death in a gene therapy trial in September of '99 certainly got a great deal of
attention. Problems that we've seen
abroad have gotten a great deal of attention in the press, the Washington Post
series this past December, and even very recently, a death in what one would
consider an academic research trial, certainly a trial that was not being
forwarded for purposes of commercialization, but nonetheless a trial that used
an investigational product, a drug by our definition, in a clinical
investigation.
We are
certainly trying to answer these calls, and I'll talk a little bit about how
we're going about doing this in just a moment.
Ultimately, in answering these calls we really are very much based on
our mission, and it is certainly a very broad public mission. We have to be out there ensuring the safe
use of all of the products we regulate, 25 percent of the U.S. economy, or
close to it, and make sure that those products themselves are safe and
efficacious.
And to do
this we need the information that comes from clinical research. We need the science that's underlying our
decision-making, much of what has been talked about all day today. We need the accuracy, the completeness of
information from good clinical trials.
Our
mission is very broad, even from the standpoint of what we have to oversee in
the clinical trial arena. We call it
Good Clinical Practice, but it is very all-encompassing, very
all-embracing. It's not simply
domestic, it's very much a global issue.
But
fortunately we have colleagues in this process. GCP is, as it has been developed, very much a system of shared
responsibilities, and that is the system that in fact we want to keep as vital
as possible. We think it has done a
very good job of protecting human research subjects over the past 25 years.
And in
fact when we look at those few cases that I mentioned in the earlier slide
where we've had deaths, we can actually look at this list of responsibilities
and say in those cases we've lost some of the control points in each of those
cases that would otherwise ensure the appropriate oversight of clinical trials,
either by the investigator and the sponsor becoming one, the IRB simultaneously
failing, the failure to bring these to the attention of government regulators
to be able to interact in these clinical trials.
We have
been very lucky, as well. Not only do
we have the built-in colleagues that come from the shared system of
responsibilities in GCP, we also have a number of colleagues in government and
a number of new government entities, if you will, or new people coming into
government entities to revitalize this process. We're working very closely right now with the Office for Human
Research Protections in the department to try to develop human subject
protection as a unified entity, working as a single voice across government.
We're
even extending that beyond the department, working with the National Science
and Technology Committee's Subcommittee on Human Subject Research. This is a group of representatives from all
the agencies that are involved in human research, behavioral, social, as well
as biomedical. And we've seen a lot of
new infrastructures coming into play, the VA putting in its own series of
systems, again for research compliance, for research assurance, for furthering
the oversight of clinical trials. New
advisory committees coming down the line, as well as advisory committees to our
own department, the National Human Research Protection Advisory Committee.
But at
the end of the day, though, we have all of these colleagues to work with, but
we are still in some measure left on our own because FDA certainly has very
unique responsibilities, responsibilities that ultimately play on
decision-making in applications.
So what
are we doing to address the issues that we've seen, the problems that have come
to public attention, the problems that are threatening the ability in fact to
even conduct clinical research because they're scaring off subjects from
enrolling in clinical trials? We
obviously have to address these concerns and make sure, in fact, that FDA is
out at the forefront assuring that these protections are in place.
So we're
looking at this from the standpoint of broad initiatives, initiatives to
further protection of human research subjects, initiatives directed at defining
and improving the responsibility of those who are involved in the clinical
research process, looking at reporting to FDA, trying to pull in and trying to
enhance the reporting of problems to FDA so that in fact we can help work
toward creative solutions in dealing with them. Ultimately, as well, issues in education and outreach.
And I'll
talk also a little bit about how we're moving in these directions through an
infrastructure that we put in place, the Office for Good Clinical Practices,
and the collaborations out of there.
Well,
first of all, protection. We know that
there are a number of areas that we certainly have to strengthen and that we
are working to strengthen. These aren't
the level of the IRBs and institutions, looking at issues in real-time
oversight of safety. It's not simply
enough to come in after the fact, after the damage has been done. Looking at effective sponsor monitoring, not simply rote sponsor
monitoring but mechanisms that will make the clinical trial process
better. Strengthening our system with
regard to clinical investigators and site staff, as well as our own
responsiveness to subject concerns and complaints.
Well,
let's talk a little bit again about how we're moving to strengthen the IRB
system. One very fundamental criticism
that was brought our way by the Inspector General was that we don't even know
the entire spectrum of IRBs that are out there, involved in FDA regulated
research. So we have taken to heart the
concept of moving toward IRB registration, not simply just to define an
inventory but because now we have information technology capabilities available
that, as we do put in place an IRB registration, it can be a two-way system
that gives us the ability not only to know who is out there doing our work, but
to be able to tell them what is new in that area, what we can come to expect in
this area.
We're
working with the Institute of Medicine and with OHRP, the Human Subject
Research Subcommittee, toward at least piloting accreditation of IRBs. The goal is to raise the floor above our
minimal regulatory requirements, and we think the best way to do that is to
move to an accreditation system that will largely be outside of government,
where the standards in fact will help to promote improvements in the process.
And I
think very much the third point is one we have to take into account, and that
is to start reducing unnecessary burdens on IRBs and institutions where these
are adding little to human subject protection, or indeed where they are already
covered, covered by industry, covered by us, or otherwise better covered by
systems that we perhaps have to still think about but put in play.
So,
again, the challenges for us are still, one, we have a whole series of human
subject protection functions that we need to cover. We know that this includes a review of the ethics, a review of
consent, scientific review, general monitoring of studies, specific safety
monitoring of studies and real-time safety monitoring. We have to make sure conflict of interest
isn't at issue, and we still have concerns about maintaining privacy and confidentiality.
All of
these functions are necessary to keep the process vital, but we have to now
take a look back and say the IRB cannot do all of these. We have to look again at the system. Say these all need to be covered, but who
best to do these? We have to sit down
and have very clear dialogue about how to define roles, how to redefine roles,
and how to clarify roles.
GCP works
because there is some reasonable level of redundancy. We have to keep some reasonable level of redundancy, but too much
becomes ineffective and bogs the entire process down, and this is what we have
to work to avoid. Ultimately it's not
simply a question of putting in place structures, putting in place
systems. We all know that the real key
is ensuring that these systems are performing, that they are providing protection
for subjects, that they are providing the quality of science that's going to be
important to FDA decision-making. And
for us to do this, of course, we need to ensure through education, and through
an emphasis on quality assurance and continual quality improvement, that we are
making strides in this whole process.
We are
working as well in the area of real-time oversight of safety. Part of this we know. The only group that can effectively, or the
only individual that can effectively ensure the safety of a subject, outside of
the subject his or herself, is going to be the person with direct contact, and
that's the clinical investigator or site staff. I think we're all fooling ourselves if we think that parties very
remote to the subject and the investigator are going to accomplish this.
So we
have to spend time on education and on changing institutional culture to
ensure, if we have cases where an investigator is also the sponsor of a study,
they understand that that doesn't mean they have to do less because no one is
monitoring them. Rather, it means they
have twice the responsibility and twice the need for education in what they
need to do properly.
We're
moving from the standpoint of oversight of safety in looking at other
structures, though. I mentioned this
earlier, and one of these is certainly the Data Monitoring Committee. And I am actually very pleased to say FDA's
guidance, our draft guidance on data monitoring, issued on our web sites this
morning. It is a fortuitous time
because in fact we had long ago planned to have a public workshop on data
monitoring committees scheduled for the 27th of November here in Bethesda, and
we are pleased to see that the guidance document is available, such that it can
be discussed in time for that meeting.
And we're
working as well with NIH, with OHRP, in discussion of safety databases. We're also working in the area of protecting
vulnerable populations. As I said, part
of the goal is for FDA to speak with one voice across government, and one of
the ways we have done this is by starting to look at those regulations, those
areas that we can promote protection, that are otherwise part of government
regulation, such as the PHS regulations for children, and have moved to adopt
these. And so Subpart B of the interim
rule, which looks at safeguards at the level of the IRB, is now part of FDA
regulation as an interim rule we put into place in April of this year.
We are
starting to look down the line in other ways to look at consistency, looking at
Subpart B, for example, another PHS subpart dealing with protections for
pregnant women and neonates. We are
looking also to enhance our bio research monitoring program. It's always difficult. Our Office for Regulatory Affairs, our field
force, has always had to suffer from continual declines in resources, from
continual pulling away of resources from the bio research monitoring arena, but
I think now we can say we may have some success in moving toward more resources
in this area.
But
again, like with our other strategies, we have to use these resources very
wisely. We have to use them in a
strategic planned fashion, and part of this means we need to take on a balance
between how we look at clinical trials.
We need of course to keep looking at trials as they are submitted for
purposes of FDA decision-making, to ensure the integrity of the information
that we get, but we also need to use those resources to be responsive to the
public, to the community, by following up on real-time complaints, and also to
promote the science of what we are doing in our bio research monitoring
program.
It's
important to know at some level the state of affairs in areas that are coming
to the forefront scientifically or that are involving vulnerable
populations. We started this with gene
therapy, doing a more systematic statistical look. Certainly we're going to move down this row in other areas. I put pediatric trials up here because
that's one area I certainly would like to see focused upon. I'm not sure we have yet made our decisions
entirely where we are going to next prioritize.
But in
any case, as we are moving forward, we are moving forward with other groups as
well. We have started information
sharing with OHRP, with the VA, with others, to make sure in fact that we are not
simply preventing compliance information that's important to all of us from
going forward.
And
you've heard a lot about quality.
Quality assurance is going to be part of our system. We know we need to look not only externally
and promote to industry that they should have quality assurance programs and
quality improvement programs. That's
kind of a hollow advice to industry, if we ourselves are not doing the same
with FDA, such that we can assure industry and the community are getting
consistent advice from us.
Well, I
said before, part of this also is responsibility. We have to be out there ensuring understanding. Right now, of course, based on issues I had
mentioned with recent deaths in an academic setting, we have to reiterate what
in fact our law, what our regulations currently state. Our law defines "drug" very
broadly, and in fact it is, as indicated here, one of the definitions is
"articles (other than food) to affect the structure or any function of the
body of man."
So you
can see, I mean, our coverage, what we are responsible for in regulating these
products under the law is very broad, and similarly clinical investigation in
our regulations is defined very broadly.
It's essentially, for an approved product, any use in medical practice,
any experiment that involves a drug or a test article. And indeed, under our regulations, when an
unapproved drug or product is used in a clinical investigation, there is a
requirement for FDA to be part of the regulatory scheme. That's how it currently exists.
So the
challenge for us, of course, is now we have to reiterate that message, that
challenge studies, physiology studies of unapproved drugs, biologics, and
significant risk devices certainly meet the definitions for FDA jurisdiction. But we also need to be cognizant of how
that's going to impact science and how that's going to impact the community, by
understanding the nature and scope of these activities in the community, and
ultimately coming to work with the community to define how we can balance our
level of oversight with the level of risk in these studies.
We also
know that for a long period of time we have had a lot of ambiguity in what the
FDA definitions read, such that this has created loopholes and confusion in the
clinical trial arena. I don't think any
of us in FDA ever thought of the concept of a subinvestigator or, excuse me, an
investigator being 3,000 miles removed from any physical or verbal contact with
a patient, but simply an administrator in an office, while everyone else is a
subinvestigator. That's certainly not
what ICH, the International Conference on Harmonization, has put forward, and I
don't think that that's what any of our thinking would be, but that's not clear
from our definitions.
We have
those intrinsic problems, as I said, with sponsor/investigators. If GCP is a system of controls, what happens
when the sponsor and the investigator are the same? They are silly questions in some ways. I mean, the sponsor is responsible to provide the investigator
with an investigator brochure. What
does this mean, that the person gives it to themselves? The sponsor is responsible for monitoring
the investigator. What does that mean
in a sponsor/investigator study? The
person is supposed to monitor themselves without any additional oversight?
These are
real problems for us right now. And
similarly there are the problems of what are the responsibilities of
institutions? We said IRBs can't do it
all. FDA certainly regulates
institutions. We have to talk a little
bit with the community about what institutions can and should do.
It's
certainly an issue as well of conflict of interest. We are working as part of a broader group with OHRP, with the
National Human Research Protection Advisory Committee, the Human Research Subject
Subcommittee, to develop guidance that will help promote minimization and
managing of conflicts of interest, not simply payments but any kind of
potential conflict of interest, and not simply for the investigator but also at
the institutional level.
We also
have to look again at non-U.S. trials.
The Inspector General has just told us that we've seen a 16-fold
increase in the number of non-U.S. clinical investigators submitting data to
FDA applications over the past 9 to 10 years.
That's certainly a very large increase, but one that you would expect
with the globalization of the industry.
We have
to look back at our criteria for accepting these studies. We didn't have standards, we didn't have GCP
defined when we put most of these regulations in place, and we rooted our
acceptance in very vague ethical principles such as those in the early versions
of the Declaration of Helsinki. We've
moved a long ways in that area on an international level. Certainly much of the world, even China, is
now adopting GCP standards, ICH GCP standards.
I think it's time we update our own expectation. You know, we expect more than just vague
ethical conformance. We want good
science, we want good quality, and we also want good human subject protection.
And we've
made a great deal of progress in GCP harmonization. We're looking toward GCP as a more concrete standard, and as we
do that, we're looking also toward venues in which we can further globalize
these standards. The World Health
Organization is interested in this.
They have recently convened a consultation that we were part of. Pan American Health Organization as well, in
the device area they're moving forward through ISO. And as well we're looking at mechanisms for supporting capacity
building.
We also
need to deal with issues of misconduct.
We've talked with various of the trade organizations about this, because
in fact we worry that there are loopholes in the current regulatory schema. The concept that in fact only the clinical
investigator is subject to termination with regard to falsification, this is a
matter that takes place only if the sponsor can't correct. And if the trial is over, what does that
mean? You obviously can't correct when
the trial is over, but yet that is a loophole in terms of reporting.
So we're
looking back at what we expect to keep scientific validity in an appropriate
position, and we're looking at this even from the standpoint of regulation.
Well,
there is no question education is ultimately going to be the key. We need to target all who participate. We're looking at technology. We've moved into web sites that are going to
provide access to GCP information in consolidated spots.
This is
our new office's web site, and I'll say a little bit more about that very
briefly. One of the things that
certainly we have decided to do within the agency, and I certainly thank our
leadership council for that decision, is to establish an umbrella office, a new
office to coordinate GCP across the agency as well as beyond the agency.
We had a
few abortive attempts at naming this
office. Those of you who have followed
this perhaps in the trade press, we started off as an Office of Clinical
Science. I think we all agreed that
this embraces perhaps more than clinical science, embraces all aspects of Good
Clinical Practice. We tried Office for
Human Research Trials, with the hope that this would give the impression of our
coordinated work with Office for Human Research Protection at the department. Unfortunately it created a great deal of confusion
instead, so we settled on the Office for Good Clinical Practice. It is a very small office. We're going to remain it as a very small
office, but it is strategically located within the Commissioner's Office and
our Office of Science.
The key
positions are the directorship and two other positions that we certainly moved
forward with. Stan Woollen's position
is Associate Director for Bio Research
Monitoring. Stan has had some 25
years of experience or 23 years of experience in the bio research monitoring
arena, at all levels from field to ORA management to Center level and now to
our umbrella office. And Bonnie Lee,
who has been involved with FDA in the area of ethics issues from the time of
the National Commission and the Tuskeegee studies, again a very
long-experienced person in the area of human subject protection policy.
So our
role here, we're taking on a centralized role as a small office, to largely try
to bridge the Centers and ORA in the development of GCP policy, in developing
those quality systems for our own bio research monitoring program and promoting
quality in clinical trials externally, in many of the initiatives I've
indicated earlier, in our agency international harmonization efforts in the GCP
arena, and coordinating GCP education and outreach.
In
remaining small, we have to rely on leveraging, and so this affects--again, I
am very thankful for the cooperation of our senior management, our leadership
council, by providing our group with the resources of the key medical policy-makers
and key compliance policy-makers within the agency to come together in steering
committees, roundtables, and working groups to deal with these problems. So we don't have to manage them from a
top-down perspective, but we can actually pull in operational knowledge from
the strongest people in all of the Centers.
We're leveraging with OHRP and ultimately leveraging with our
stakeholders.
So in
conclusion I would like to say we are moving forward, but there are certainly a
lot of opportunities where we need to work together as an agency and we need to
work together with all of our constituency groups. The reforms are underway here, but the only way we are going to
make these systems improve and get the best possible systems is to get our
broadest possible participation.
So I
thank you very much for your time and attention, and I will be taking
questions.
CHAIRMAN
LANGER: Questions or comments from
anyone? Okay, thank you very much.
Comments
in general from the Science Board?
Another
comment? Yes.
MS.
MOENCH: Yes, I would like to ask a
question if you don't mind. Liz Moench
from MediciGroup, and I really want to thank Dr. Lepay for an excellent
presentation. I think there are a
couple of things, as I listened to this presentation, that I'd like to ask for
consideration on.
Number
one is, I think that we have to give very careful consideration to the role of
the PI. The PI is, I think needs to be
redefined, not as a physician investigator but actually as practically
invisible or partially involved. In a
study that we just completed, I can tell you that out of 100 PIs, only two were
actually actively seeing patients. So
what we're seeing is a very concerning trend where it is the study coordinator
who is playing a much more involved role in clinical research today, and not
the PI.
So I
think that that is an issue that is certainly going to rear its head in
clinical litigation, because we're certainly seeing more and more law firms
getting into this, and maybe then sponsors will play a more active role in
setting performance standards. But I
think that maybe FDA, in collaboration with the AMA, could play a role in more
certification. I like the idea of IRB
certification, but I would certainly like to see greater certification of
physician investigators who actually really realize what their role should be
and what the consequences are.
I think
the other point I would like to raise also is that we really need to look at
overhauling the informed consent process.
I can tell you when we do comprehension testing, many patients have no
idea really what they're signing. And
there is some marvelous literature now out there that actually shows how few
patients really comprehend in fact that they are even participating in a
clinical trial. So I would really like
to see that and some more comprehension testing, that sponsors in fact have to
demonstrate that the patients really do understand. I know Lou Morris did so much work looking at comprehension
testing of labeling of OTC products.
Really this is comparable, I think, to that process.
And
finally, I would really like to see that we get more in terms of quality check,
in terms of patient feedback. I know
that we have played a role with some sponsors in actually doing satisfaction
testing, where we actually get feedback directly from patients and their
experience in clinical trials, and I can tell you it has been an eye opener to
some of the clinical teams.
So those
are some points that I would like to raise, and I thank you very much.
DR.
LEPAY: Just briefly.
CHAIRMAN
LANGER: Very briefly.
DR.
LEPAY: I was just going to say those
are three certainly very good points, and from the perspective of clinical
investigators, this is something that we have targeted as an issue for the past
two or three years. We're working with
the AAMC. We've worked with a number of
medical schools and medical colleges that have come forth and within their own
institutions have put into place, or tried to put into place, certification
programs or certification requirements.
We thought that that was a good use of FDA resources in contributing to
educational programs.
On the
realm of IRBs and informed consent, I think you're absolutely right, and I
think the only way we are going to achieve a better informed consent process is
to pull IRBs back to basics, to say in fact the informed consent is one of the
leading roles of the IRB, and we would much rather focus some level of time and
attention on quality assuring and quality improving the process of informed
consent, and maybe less on some of the less important, less protective issues
that they have come to acquire over the years, and we have to move forward in
restructuring that aspect of the system.
DR.
LEPAY: Thank you. So just briefly, a summary, I think what we
concluded today is that the pharmaceutical manufacturing issues that were
raised this morning were very important.
I want to encourage the FDA to move forward on that and to keep us
informed. And we certainly accept the
CDRH's External Science Review. It's
very positive. So thank you all very
much, and we'll look forward to the next meeting.
[Whereupon, at
4:00 p.m., the meeting was adjourned.]