P24: EXPERT PERSPECTIVES OF UNMET NEED IN PATIENTS WITH RELAPSED/REFRACTORY MULTIPLE MYELOMA (RRMM) WHO RECEIVE LENALIDOMIDE-SPARING REGIMENS IN EUROPE. (5th April 2022) - Mateos, M; Leleu, X; Zamagni, E; Delforge, M; Bringhen, S; Broijl, A; de la Rubia, J; Shaw, A; Brescianini, A; Gonzalez-McQuire, S; Patel, S; Moreau, P