Salvage chemotherapy induces disease remissions in patients with relapsed or refractory (r/r) T-cell lymphomas, but fails to provide lasting tumor control. We analyzed the outcome after peripheral blood stem and bone marrow transplantation (PBSCT, n = 80; BMT, n = 4) from matched related (MRD, n = 22) or matched and unmatched unrelated donors (MUD and MMD, n = 53 and n = 9, respectively) following conditioning with fludarabine, busulfan, and cyclophosphamide (FBC) for 84 consecutive patients with r/r T-cell malignancies. At start of conditioning LDH was elevated in 50% of cases, and residual tumor (PD, SD, PR) was detectable in 84% of patients. In total, 38% (95% CI 33-44) of the patients were alive and disease-free after a median observation time of 14.5 (range 1.8 to 114) months. Univariate and multivariate analyses identified low ECOG status, as well as occurrence of acute GvHD as favorable factors for outcome. Lymphoma-directed conditioning with fludarabin, busulfan and cyclophosphamid (FBC-12), and allogeneic stem cell transplantation resulted in long-term survival for a proportion of patients with r/r peripheral T-cell lymphoma, including those with PR and SD only after salvage therapy.
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