ODE-257

IN COMBO W/ DEXAMETHASONE FOR ADULTS W/ RELAPSED OR REFRACTORY MULTIPLE MYELOMA WHO RECEIVED AT LEAST 4 PRIOR THERAPIES AND REFRACTORY TO AT LEAST 2 PROTEASOME INHIBITORS, AT LEAST 2 IMMUNOMODULATORY AGENTS, AND AN ANTI-CD38 MONOCLONAL ANTIBODY