Fulcrum Therapeutics stock plunged after the company discontinued its lead sickle cell disease drug following FDA concerns.

Fulcrum’s setback is the latest in a series of stumbles for the developers of sickle cell medicines, among them Pfizer, Novartis and Intellia Therapeutics.

Fulcrum Therapeutics stock plunged after the company discontinued its lead sickle cell disease drug following FDA concerns.