Ph1b/2 Dose-Escalation Study of Entinostat With Pembrolizumab in NSCLC With Expansion Cohorts in NSCLC, Melanoma, and Colorectal Cancer

The purpose of this study is to determine the safety and tolerability of entinostat used in combination with pembrolizumab in patients with Non-small Cell Lung Cancer. Additionally, the purpose of the study is to assess how effective entinostat and pembrolizumab are in combination in patients with Non-small Cell Lung Cancer, Melanoma, and Mismatch-Repair Proficient Colorectal Cancer