P888: REPLACING STEROIDS IN TRANSPLANT-INELIGIBLE MULTIPLE MYELOMA: THE PHASE 2 ISATUXIMAB-BORTEZOMIB-LENALIDOMIDE-DEXAMETHASONE REST STUDY - F. B. Askeland; E. Haukås; T. S. Slørdahl; D. Schjøll; A. Lysen; E. Hermansen; F. Schjesvold (HemaSphere, 2022)