Allogeneic Stem Cell Transplantation (Allo-SCT) for Relapsed/Refractory T Cell Lymphomas in Adults: A Survey from the Société Française de Greffe de Moelle et de Thérapie Cellulaire (SFGM-TC).

Background: Adult mature T-cell and NK-cell neoplasms include several lymphomas entities. Taken together, T- and NK- cell lymphomas represent 10–15 % of non-Hodgkin's lymphoma in adults, presenting with aggressive behaviour and poor outcome (except for ALCL ALK positif lymphomas). Despite intensive chemotherapy including or not autologous stem cell transplantation upfront, a majority of patients experience relapse. Therefore, allo-SCT is an attractive second-line strategy. We retrospectively analyzed T-cell lymphomas patients (lymphoblastic lymphomas were systematically excluded) reported to the SFGM-TC registry and transplanted from an HLA identical sibling donor with or without myeloablative conditioning regimen.