Merck’s KEYTRUDA® (pembrolizumab) Met Primary Endpoint of Event-Free Survival (EFS) as Perioperative Treatment Regimen in Patients With Resected, Locally Advanced Head and Neck Squamous Cell Carcinoma

RAHWAY, N.J.--(BUSINESS WIRE)---- $MRK #MRK--Merck (NYSE: MRK), known as MSD outside of the United States and Canada, today announced that the Phase 3 KEYNOTE-689 trial evaluating KEYTRUDA® (pembrolizumab), Merck’s anti-PD-1 therapy, as a perioperative treatment for patients newly diagnosed with stage III or IVA, resected, locally advanced head and neck squamous cell carcinoma (LA-HNSCC) met its primary endpoint of event-free survival (EFS). The study evaluated KEYTRUDA as neoadjuvant therapy, then continued