FDA “Regulatory Flexibility” On Accelerated Approval Must Result In Some Withdrawals

If all drugs cleared for accelerated approval succeed in their confirmatory studies, then FDA is being overly conservative in its use of the expedited approval pathway, FDA Office of Hematology and Oncology Products Director Richard Pazdur says at the AACR annual meeting.

If FDA is exercising the appropriate regulatory flexibility in approving drugs under accelerated approval, some of those products inevitably will be withdrawn from the market for failure to confirm efficacy, the agency’s top oncology reviewer said at the American Association for Cancer Research annual meeting in Washington, D.C. April 7.

Office of Hematology and Oncology Products Director Richard Pazdur said that if none of the drugs receiving accelerated approval is ever withdrawn, then the agency is taking an overly conservative...

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