Prasad Out at FDA, Lawmaker Takes Action on Rare Disease Rejections and a Spate of Obesity Data

Rare disease biotech stocks pop on the news that Vinay Prasad, the FDA’s chief biologics regulator, will depart the FDA at the end of April; Sen. Ron Johnson launches an investigation into recent rare disease drug rejections; and Roche and Zealand’s amylin analog fails to match investor expectations—and Eli Lilly’s rival candidate—in a mid-stage trial.