S219: FIRST CLINICAL STUDY OF THE ANTI-SIGNAL REGULATORY PROTEIN-ALPHA (SIRPΑ) ANTIBODY CC-95251 COMBINED WITH RITUXIMAB IN PATIENTS WITH RELAPSED/REFRACTORY (R/R) NON-HODGKIN LYMPHOMA (NHL). (23rd June 2022) - Strati, P.; Hawkes, E.; Ghosh, N.; Tuscano, J.; Chu, Q.; Anderson, M. A.; Patel, A.; Burgess, M. R.; Hege, K.; Chhagan, S.; Boyanapalli, S.; Day, T.; et al.