Gene Therapies: US FDA Has Used Accelerated Approval Four Times Based On Intermediate Clinical Endpoints

Three of the accelerated approvals were for CAR-T products, a class that the agency considers to be gene therapies. The FDA’s September approval of bluebird bio’s Skysona for cerebral adrenoleukodystrophy was the lone non-cancer product in the group. Pink Sheet infographic tracks the required confirmatory studies and timelines for all four products.