692 COMMANDER-001: safety data from a phase I/II dose escalation/expansion study of SQZ-eAPC-HPV, a cell-based mRNA therapeutic cancer vaccine for HPV16+ solid tumors by Antonio Jimeno, Michael S Gordon, Howard Bernstein, Scott Loughhead, Jong Chul Park, Justin C Moser, Wade T Iams, Meredith Pelster, Kerry J Rodabaugh, Julia Jennings, Nathan Miselis, Marshelle S Warren, Victoria Villaflor, Melinda Morrison

652 NT-I7 (efineptakin alfa), a long-acting IL-7, in combination with pembrolizumab improves T cell fitness in heavily pretreated subjects with gastrointestinal tumors by Cara Haymaker, Aung Naing, Minal Barve, Marya Chaney, Se Hwan Yang, Siyoung Lee, Byung Ha Lee, Sara Ferrando-Martinez, Hirva Mamdani, Richard D Kim, Meredith Pelster, Mohamed Derbala, Jack Goon, Samuel Darko, Julie Murphy, Lauren Gorelik, Allison Bierly

611 XTX202–01/02–001, Phase 1/2 first-in human study of XTX202, a masked, tumor-activated IL-2βγ, in patients with advanced solid tumors: results from phase 1 by David Miller, John Powderly, Suthee Rapisuwon, Sanjay Goel, Bartosz Chmielowski, Richard Wu, Meredith McKean, Damiano Fantini, Yousef Zakharia, Jacob Thomas, Diana Hanna, Anthony El-Khoueiry, Ekta Patel, Anurag Gupta, George Lee, Meghan Duncan, Meredith Pelster, Randy Hurley, Aika Siu, David Crowe, Sattanathan Paramasivan, Katarina Luptakova