The purpose of this guidance is to provide recommendations to industry and review staff on good 21 review management principles and practices (GRMPs) for the review of new drug applications 22 (NDAs), biologics license applications (BLAs), or efficacy supplements/supplements with 23 clinical data.² This guidance applies to human drug applications (as defined in section 735(1) of 24 the Federal Food, Drug, and Cosmetic Act (FD&C Act)) and biosimilar biological product 25 applications (section 744G(4) of the Public Health Service Act (PHS Act)). The goal of GRMPs 26 is to ensure that the review process is managed in a consistent and efficient manner, thereby 27 decreasing the number of review cycles necessary for approval and enhancing patients’ timely 28 access to important therapies. This guidance also clarifies the roles and responsibilities of 29 review staff in managing the review process and identifies ways in which applicants may support 30 an efficient and robust review process. Successful implementation of the GRMPs is crucial to 31 FDA’s mission of protecting and promoting the public health.³