776 Long-term efficacy and safety of lifileucel tumor-infiltrating lymphocyte (TIL) cell therapy in patients with advanced melanoma: a 4-year analysis of the C-144–01 study by James Larkin, Harriet Kluger, Omid Hamid, Jeffrey Weber, Amod A Sarnaik, Brian Gastman, Jeffrey Chou, John M Kirkwood, Eric Whitman, Martin Wermke, Evidio Domingo-Musibay, Theresa Medina, Sajeve Thomas, Wen Shi, Xiao Wu, Jason A Chesney, Giri Sulur, Friedrich Graf Finckenstein

778 TILVANCE-301, a phase 3 study of lifileucel tumor-infiltrating lymphocyte (TIL) cell therapy combined with pembrolizumab (pembro) vs pembro alone in treatment-naïve unresectabl... by Gino K In, James Larkin, Yazan Samhouri, Marcus Butler, Victoria Atkinson, Jeffrey Chou, Juan Martin-Liberal, Patrick Terheyden, Sajeve Thomas, Wen Shi, Xiao Wu, Andrew S Poklepovic, Young Hong, Giri Sulur, Friedrich Graf Finckenstein, John B Haanen, Andrew JS Furness, Philip Lammers, Ryan H Nguyen, Idit Peretz