Epacadostat in Combination With Pembrolizumab and Azacitidine in Subjects With Metastatic Colorectal Cancer

Trial Design This is an open label, single-arm, phase IB/II trial to evaluate the safety, tolerability and anti-tumor efficacy of epacadostat (INCB024360) in combination with pembrolizumab (MK-3475) plus azacitidine in patients with chemo-refractory MSS mCRC. The phase 1B portion of the study will evaluate the safety, tolerability and RP2D of epacadostat (INCB024360) in combination with pembrolizumab plus azacitidine in subjects with chemo-refractory MSS mCRC without any further standard treatment options. The phase 2 portion of the study will evaluate the efficacy and safety of epacadostat (INCB024360) in combination with pembrolizumab plus azacitidine in subjects with chemo-refractory MSS mCRC without any further standard treatment options. In both phase IB and phase 2 portions, patients will receive the combination of azacitidine, pembrolizumab and epacadostat (INCB024360) for the first 18 cycles (Cycles 1-18). Beginning with Cycle 19 through Cycle 35, patients will receive the combination of pembrolizumab and epacadostat (INCB024360).