Dr. Vinay Prasad had been serving as the FDA's director of the Center for Biologics Evaluation and Research since May, and was later named chief medical and scientific officer.

Vinay Prasad recently drew outrage from conservatives, including Laura Loomer, who disagreed with his approach to approving gene therapies for rare diseases and accused him of holding liberal views.

Vinay Prasad, M.D., has left the FDA less than three months into the role as director of the Center for Biologics Evaluation and Research (CBER), overseeing vaccines and cell and gene therapies.