P905: IXAZOMIB-THALIDOMIDE-DEXAMETHASONE INDUCTION FOLLOWED BY IXAZOMIB OR PLACEBO MAINTENANCE IN NON-TRANSPLANT ELIGIBLE NEWLY DIAGNOSED MULTIPLE MYELOMA PATIENTS; LONG-TERM RESULTS OF HOVON-126/NMSG 21.13. (23rd June 2022) - Groen, K.; Seefat, M. R.; van der Holt, B.; Schjesvold, F. H.; Stege, C. A.; Levin, M.-D.; Hansson, M.; Leys, R. B.; Regelink, J.; Waage, A.; Szatkowski, D.; Axelsson, P.; et al.