FDA accepts Byondis B.V.’s BLA for [vic-] trastuzumab duocarmazine

Byondis B.V. announced that the FDA has accepted its BLA for [vic-] trastuzumab duocarmazine (SYD985), a HER2-directed antibody-drug conjugate, for the treatment of patients with HER2-positive unresectable locally advanced or metastatic breast cancer (MBC), with a PDUFA action date of 12 May 2023.  This is Byondis’ first regulatory submission for SYD985 which is its lead program.  In January 2018, the FDA granted fast track designation for SYD985, based on promising Phase I data for pretreated last-line HER2-positive MBC patients.