ISATUXIMAB PLUS CARFILZOMIB AND DEXAMETHASONE IN PATIENTS WITH RELAPSED MULTIPLE MYELOMA AND SOFT-TISSUE PLASMACYTOMAS: IKEMA SUBGROUP ANALYSIS Mehmut TURGUT; Roman HAJEK; Tomas JELÍNEK; Philippe MOREAU; Thomas MARTIN; Ludek POUR; Gabor MIKALA; Argiris SYMEONIDIS; Sara BRINGHEN; Andreea RAWLINGS; Marie Laure RISSE; Helgi VAN DE VELDE; Ivan SPICKA;