KEYTRUDA Is Now Approved in Combination With Chemotherapy as First-Line Treatment for Patients With Locally Recurrent Unresectable or Metastatic TNBC Whose Tumors Express PD-L1 and Who Have Not Received Prior Chemotherapy for Metastatic Disease KEYTRUDA Is the First Anti-PD-1 Therapy in Combination With Chemotherapy to Demonstrate Statistically Significant Overall Survival in These Patients; Based on Results From .