Vinay Prasad, key Makary ally and a focus of controversy at the FDA, is leaving the agency

WASHINGTON — Vinay Prasad, a top official at the Food and Drug Administration who has been at the center of recurring public controversies, is exiting the agency for a second time.

Prasad will leave the FDA at the end of April, and his replacement has not yet been identified, FDA Commissioner Marty Makary told The Wall Street Journal.