247 FOXO1 is a master regulator of CAR T memory programming by Katalin Sandor, Peng Xu, Joseph A Fraietta, Stephan Grupp, Crystal L Mackall, Patrick Quinn, Martina Markovska, Yingshi Chen, Katherine P Mueller, Alexander E Doan, Andy Chen, Geoffrey Rouin, Bence Daniel, John Lattin, Brett Mozarsky, Jose Arias-Umana, Robert Hapke, Inyoung Jung, Dorota Klysz, Malek Bashti, Wenxi Zhang, Junior Hall, Caleb A Lareau, Elena Sotillo, Ansuman T Satpathy, Evan W Weber