Syndax And Merck Announce First Patients Dosed In Phase 1b/2 Clinical Trial Of Entinostat And Keytruda® September 28, 2015 PDF Version Syndax-Merck-601-Ph1b2-Initiation-09-28-15.pdf 89.5 KB Syndax And Merck Announce First Patients Dosed In Phase 1b/2 Clinical Trial Of Entinostat And Keytruda<font size="-1"><sup>®</sup></font>