Phase 3 KEYNOTE-B15 Puts KEYTRUDA-Padcev on Track to Redefine Perioperative Care in Muscle-Invasive Bladder Cancer
SHERIDAN, WYOMING - December 19, 2025 - Merck reported positive topline Phase 3 data showing its immunotherapy KEYTRUDA (pembrolizumab) combined with the antibody-drug conjugate Padcev (enfortumab vedotin-ejfv) improved event-free survival, overall survival and pathologic complete response when used before and after surgery in cisplatin-eligible muscle-invasive bladder cancer (MIBC), setting up a potential shift in the perioperative standard of care.