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Classification Categories for Certain Supplements Under BsUFA III

FinalCenter for Biologics Evaluation and Research Center for Drug Evaluation and Research09/08/2025

Description

This guidance provides recommendations for applicants on classification categories A, B, C, D, E, and F for original and resubmitted prior approval supplements submitted to approved applications for biosimilar and interchangeable biosimilar products under the Public Health Service Act (PHS Act). The commitment letter associated with the Biosimilar User Fee Amendments of 2022 (BsUFA III) sets forth these supplement classification categories and their associated review performance goals. This guidance is intended to help applicants identify the appropriate classification category and review goal date of the supplement being submitted. This guidance finalizes and replaces the draft guidance of the same title issued on August 11, 2023.

Scope & Applicability

Product Classes

4
Biosimilars

Guidance topic regarding classification categories

Interchangeable biosimilar

Products licensed under section 351(k) of the PHS Act

Biosimilar Product

biological products shown to be biosimilar to a reference product

Interchangeable Biosimilar Product

biological products shown to be interchangeable with a reference product; Product type subject to labeling changes and supplement categories

Stakeholders

2
Applicants

Entities submitting supplements to BLAs

Applicant

Entity submitting development data and knowledge; Entity performing the work process for change

Regulatory Context

Attributes

4
Review goal date

Associated with supplement classification categories

Dosage strength

Interpreted by FDA to refer to strength

Category A

Supplement category for Certain Safety Information

Category F

Supplement category for Interchangeability

Related CFR Sections (3)

See Also (8)

Classification Categories for Certain Supplements Under BsUFA III | Guideline Explorer | BioRegHub