P1245: CLINICAL IMPACT OF IMMUNOGLOBULIN HEAVY CHAIN REPERTOIRE IN MANTLE CELL LYMPHOMA: A STUDY FROM THE FONDAZIONE ITALIANA LINFOMI (FIL) PHASE III MCL0208 TRIAL. (23rd June 2022) - Alessandria, B.; Genuardi, E.; Civita, A. M.; Drandi, D.; Mantoan, B.; Ferrante, M.; Borriero, M.; Ragaini, S.; Bondielli, G.; Zaccaria, G. M.; Barbero, D.; Peri, V.; et al.