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Although you can comment on any guidance at any time (see 21 CFR 10.115(g)(5)), to ensure that the FDA considers your comment on a draft guidance before it begins work on the final version of the guidance, submit either online or written comments on the draft guidance before the close date.
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All written comments should be identified with this document's docket number: FDA-2020-D-2199
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Guidance Issuing OfficeCenter for Drug Evaluation and Research
This guidance is intended for sponsor-investigators (hereafter referred to as sponsors) developing individualized investigational antisense oligonucleotide (ASO) drug products for a severely debilitating or life-threatening genetic disease. Most often, individuals with such diseases will not have FDA-approved treatment options and their diseases will be rapidly progressing, resulting in early death and/or devastating irreversible morbidity within a short time frame. In these situations, drug development targeted at a larger number of patients with the ASO is not anticipated because of the specificity of the mechanism of action of the ASO drug product combined with the rarity of the treatment-amenable patient population.