S236: RANDOMIZED MULTICENTER PHASE III STUDY OF HAPLO VERSUS HLA-MATCHED UNRELATED DONOR (UD) ALLOGENEIC HEMATOPOIETIC STEM CELL TRANSPLANTATION (ALLO HSCT) FOR PATIENTS OLDER THAN 55 YEARS. (23rd June 2022) - Harbi, S.; Boher, J.-M.; Forcade, E.; Chevallier, P.; Peffault De Latour, R.; Malard, F.; Francois, S.; Charbonnier, A.; Hermet, E.; Bulabois, C. E.; Huynh, A.; Berceanu, A.; et al.