P946: TOCILIZUMAB PRE-TREATMENT SIGNIFICANTLY REDUCES THE INCIDENCE OF CYTOKINE RELEASE SYNDROME IN PATIENTS WITH RELAPSED/REFRACTORY MULTIPLE MYELOMA (RRMM) WHO RECEIVE CEVOSTAMAB - Maria-Victoria Mateos; Nizar J Bahlis; Andrew Spencer; Rayan Kaedbey; Paula Rodríguez-Otero; Simon Harrison; Chihunt Wong; Grant Goodman; Rin Nakamura; Voleak Choeurng; James Cooper; Suzanne Trudel (HemaSphere, 2023)