Incyte Corporation and Merck, known as MSD outside the United States and Canada, announced that an external Data Monitoring Committee (eDMC) review of the pivotal Phase 3 ECHO-301/KEYNOTE-252 study results evaluating Incyte’s epacadostat in combination with Merck’s Keytruda in patients with unresectable or metastatic melanoma determined that the study did not meet the primary endpoint of improving…