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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can comment on any guidance at any time (see 21 CFR 10.115(g)(5)), to ensure that the FDA considers your comment on a draft guidance before it begins work on the final version of the guidance, submit either online or written comments on the draft guidance before the close date.

If unable to submit comments online, please mail written comments to:

Dockets Management
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-2021-D-1139

Docket Number:
FDA-2021-D-1139
Issued by:
Guidance Issuing Office
Center for Drug Evaluation and Research

The purpose of this guidance is to provide recommendations regarding the chemistry, manufacturing, and controls (CMC) information that should be provided in an investigational new drug application (IND) submitted by a sponsor-investigator (hereafter referred to as sponsor) developing an individualized antisense oligonucleotide (ASO) drug product for a severely debilitating or life-threatening (SDLT) disease caused by a unique genetic variant where only a small number of individuals are prospectively identified (typically one or two). These individualized ASO drug products should be from a well-characterized chemical class for which there is substantial clinical and nonclinical experience that is either publicly available or to which the sponsor has a right to reference.