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FEDERAL REGISTER · NOTICEAugust 20, 2026NOTICE — NO LEGAL EFFECTOPEN FOR COMMENT

Potency Assessment of Active Immunotherapy Products; Draft Guidance for Industry; Availability

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Document details are published in the U.S. Federal Register; SPEQ surfaces them for reference and is not affiliated with or endorsed by the FDA or the Office of the Federal Register. The authoritative text is on federalregister.gov.

Document type
Notice
Agency
Health and Human Services Department
Published
August 20, 2026
Comments close
November 18, 2026
Document number
2026-16960
ABSTRACT

The Food and Drug Administration (FDA or Agency) is announcing the availability of a draft document titled "Potency Assessment of Active Immunotherapy Products." The draft guidance document provides recommendations for developing assays to assess potency as a part of a potency assurance strategy for active immunotherapy products (ACTIMPs). When finalized, this guidance will describe the FDA's current thinking regarding design, validation, and evaluation of potency tests for ACTIMPs. This guidance is intended to supplement the December 2023 draft guidance for industry, when finalized, on "Potency Assurance for Cellular and Gene Therapy Products" with additional advice and considerations specifically for ACTIMPs, including peptide- and-protein based ACTIMPs that are not cellular or gene therapy products.

Abstract as published in the Federal Register.

The comment window is still open until November 18, 2026. The comment window is open. Check the document itself for what comments are being solicited on and what weight they carry. Submit comments through the Federal Register document below.

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