Allogeneic hematopoietic cell transplant for peripheral T-cell non-Hodgkin lymphoma results in long-term disease control.

The study analyzed outcomes of a consecutive case series of 37 patients with peripheral T-cell non-Hodgkin lymphoma, from related and unrelated donors, using allogeneic hematopoietic cell transplant (allo-HCT), between the years 2000 and 2007. All patients were pretreated; the majority had either relapsed or progressive disease ( n == 25, 68%%), 13 had cutaneous histologies (CTCL), and all were ineligible for autologous transplant. Fully ablative conditioning regimens were used in 13 patients while 24 patients underwent reduced intensity conditioning (RIC). At 5 years the overall survival (OS) and progression-free survival (PFS) probabilities were 52.2%% and 46.5%%, respectively. At the time of analysis, nine (24.3%%) patients had either relapsed ( n == 6) or progressed ( n == 3) post allo-HCT. The cumulative incidences of relapse/progression and non-relapse mortality at 5 years were 24.3%% and 28.9%%. No statistically significant variables for survival or relapse were discovered by univariate Cox regression analysis of disease and patient characteristics; differences between CTCL and other histologies were not significant. The median follow-up of 64.0 months (range: 16.4--100.4) indicates a mature data-set with probable cure in the survivors. The relapse/progression curves reached and maintained plateaus after 1 year post-transplant, demonstrating that long-term disease control is possible after allo-HCT in patients with peripheral T-cell lymphoma with advanced disease. [ABSTRACT FROM AUTHOR]