- Docket Number:
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Guidance Issuing OfficeCenter for Biologics Evaluation and Research
This guidance provides FDA’s current thinking on determining sameness of human gene therapy products under FDA’s orphan drug regulations for the purpose of orphan-drug designation and orphan-drug exclusivity. This guidance is intended to assist stakeholders, including industry and academic sponsors who seek orphan-drug designation and orphan-drug exclusivity, in the development of gene therapies for rare diseases. This guidance focuses specifically on factors that FDA generally intends to consider when determining sameness for gene therapy products and does not address sameness determinations for other types of products.
You can submit online or written comments on any guidance at any time (see 21 CFR 10.115(g)(5))
If unable to submit comments online, please mail written comments to:
Food and Drug Administration
5630 Fishers Lane, Rm 1061
Rockville, MD 20852
All written comments should be identified with this document's docket number: FDA-2019-D-5392 .