Patients received escalating doses of oral epacadostat (25, 50, 100, or 300 mg) twice per day plus intravenous pembrolizumab 2 mg/kg or 200 mg every 3 weeks....Among the two responders with RCC, each had intermediate and favorable Memorial Sloan Kettering Cancer Center risk, and one was PD-L1 positive. Both responses were maintained for approximately 15 months.