Checkpoint Inhibition Before Haploidentical Stem Cell Transplantation in Relapsed or Refractory Hodgkin Lymphoma (Hl) Patients is Associated with Higher PFS without Increased Toxicities

De Philippis, C; Legrande, F; Bramanti, S; de Oca, Cm; Dulery, R; Boubdallah, R; Granata, A; Devillier, R; Mariotti, J; Sarina, B; Harbi, S; Maisano, V; Furst, S; Pagliardini, T; Weiller, Pj; Lemarie, C; Calmels, B; Giordano, L; Chabannon, C; Carlo-Stella, C; Santoro, A; Mohty, M; Blaise, D; Castagna, L