IMPACT OF CLASS II HLA MISMATCH ON CLINICAL OUTCOMES IN HODGKIN LYMPHOMA PATIENTS RECEIVING HAPLOIDENTICAL STEM CELL TRANSPLANTATION (HAPLO‐SCT) WITH POST‐TRANSPLANT CYCLOPHOSPHAMIDE (PT‐CY). (12th June 2019) - Castagna, L.; Bramanti, S.; Devillier, R.; Pagliardini, T.; Sarina, B.; Lemarie, C.; Furst, S.; Mariotti, J.; Granata, A.; de Philippis, C.; Harbi, S.; Legrand, F.; et al.