Vinay Prasad, a top official at the Food and Drug Administration, has suddenly departed after a series of controversial decisions about a treatment for boys with Duchenne muscular dystrophy.

Dr. Vinay Prasad, the chief scientific officer at the Food and Drug Administration, has resigned after only three months in the position.

Vinay Prasad, who headed the U.S. FDA division in charge of vaccines and was also chief medical and scientific officer, has abruptly left the agency.  Endpoints News reported on Thursday that the FDA's newly appointed top drug regulator,