604 Clinical and molecular findings from a randomized phase II study of epigenetic priming with azacitidine and entinostat followed by nivolumab in previously treated metastatic no... by James Herman, Chen Hu, James White, Patrick Forde, Julie Brahmer, Victor Velculescu, Valsamo Anagnostou, Joanne Riemer, Stephen Baylin, Christine Hann, Jorge Nieva, Margaret Fitzpatrick, David Ettinger, Benjamin Levy, Christopher Cherry, Archana Balan, Noushin Niknafs, Hua-Ling Tsai, Kristen A Marrone, Blair V Landon, Michael J Topper, Ronan Kelly