More than half of ac­cel­er­at­ed ap­proval con­fir­ma­to­ry tri­als are late, re­searchers write in JA­MA

The ma­jor­i­ty of con­fir­ma­to­ry tri­als for ac­cel­er­at­ed ap­provals — meant to de­fin­i­tive­ly show clin­i­cal ben­e­fit fol­low­ing use of a sur­ro­gate for the ini­tial AA — are late …

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