CHECKPOINT INHIBITION BEFORE HAPLOIDENTICAL TRANSPLANTATION IN RELAPSED OR REFRACTORY HODGKIN LYMPHOMA PATIENTS IS ASSOCIATED WITH HIGHER PFS WITHOUT INCREASED TOXICITIES. (12th June 2019) - de Philippis, C.; Legrande, F.; Bramanti, S.; Montes de Oca, C.; Dulery, R.; Bouabdallah, R.; Granada, A.; Devillier, R.; Mariotti, J.; Sarina, B.; Harbi, S.; Maisano, V.; et al.