PRESS RELEASE
For Immediate Release
KEYTRUDA® (pembrolizumab) as Monotherapy Significantly Improved Progression-Free Survival (PFS) in Certain Patients With Advanced or Recurrent Endometrial Cancer With Mismatch Repair Deficient (dMMR) Tumors Compared to Chemotherapy
On July 15, 2026:RAHWAY, N.J.–(BUSINESS WIRE)– Merck (NYSE: MRK), known as MSD outside of the United States and Canada, today announced the Phase 3 KEYNOTE‑C93 trial evaluating KEYTRUDA® (pembrolizumab), Merck’s anti-PD-1 therapy, met its primary endpoint of progression-free survival (PFS) for the treatment of patients with mismatch repair deficient (dMMR) advanced or recurrent endometrial cancer who had not previously received systemic chemotherapy or who experienced recurrence more than six months after completing prior adjuvant therapy. KEYTRUDA is the first and only PD-1 inhibitor to show a statistically significant and clinically meaningful improvement in PFS as monotherapy compared to platinum doublet chemotherapy for these patients in a Phase 3 trial.
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