P959: CILTACABTAGENE AUTOLEUCEL IN LENALIDOMIDE-REFRACTORY PATIENTS WITH PROGRESSIVE MULTIPLE MYELOMA AFTER 1-3 PRIOR LINES OF THERAPY: CARTITUDE-2 BIOLOGICAL CORRELATIVE ANALYSES AND UPDATED CLINICAL DATA. (23rd June 2022) - Hillengass, J.; Cohen, A. D.; Delforge, M.; Einsele, H.; Goldschmidt, H.; Weisel, K.; Raab, M.-S.; Scheid, C.; Schecter, J. M.; De Braganca, K. C.; Varsos, H.; Yeh, T.-M.; et al.