This guidance is intended to assist applicants preparing to submit to FDA prior approval supplements (PASs) and amendments to PASs for abbreviated new drug applications (ANDAs) under section 505(j) of the Federal Food, Drug, and Cosmetic Act (FD&C Act) (21 U.S.C. 355(j)). The guidance explains how the Generic Drug User Fee Amendments of 2012 (GDUFA) relates to PAS submissions. The guidance also describes the performance metric goals outlined in the GDUFA Program Performance Goals and Procedures for fiscal years 2015 through 2017 (GDUFA I) and the GDUFA Reauthorization Performance Goals and Program Enhancements fiscal years 2018-2022 (GDUFA II) Commitment Letters that FDA has agreed to meet,2 and clarifies how FDA will handle a PAS and amendments to a PAS for an ANDA subject to the GDUFA performance metric goals.