GSK’s Blenrep Faces Major Setback After FDA Advisory Committee Vote
SHERIDAN, WYOMING – July 21, 2025 – GlaxoSmithKline’s ambitions to relaunch its antibody-drug conjugate Blenrep for multiple myeloma treatment faced a critical blow last Thursday, as the U.S. Food and Drug Administration’s Oncologic Drugs Advisory Committee (ODAC) rejected two proposed combination therapies over persistent safety and dosing concerns.
Safety Risks and Dosing Shortfalls Undermine Confidence
The advisory panel found that the benefits of Blenrep do not outweigh its risks for patients with relapsed or refractory multiple myeloma. In two separate votes, the committee expressed strong reservations about the drug’s risk-benefit profile: