FDA Raises Concerns Over GSK’s Blenrep as Multiple Myeloma Reapproval Hangs in the Balance
SHERIDAN, WYOMING – July 25, 2025 – The U.S. Food and Drug Administration (FDA) has cast doubt over GSK’s attempt to return its antibody-drug conjugate Blenrep to the U.S. market for relapsed or refractory multiple myeloma, citing persistent safety concerns and limited evidence of efficacy across key patient populations.