[Long Term Curative Effects and Prognostic Analysis of Stem Cell Transplantation for Treating Patients with Peripheral T Cell Lymphoma].

To explore the efficacy and prognostic factors of hematopoietic stem cell transplantation in the treatment of patients with peripheral T cell lymphoma (PTCL).The clinical records of 53 patients with PTCL were collected and analyzed retrospectively. The prognostic value of prognostic index PIT were evaluated.Among 53 cases of PTCL, 31 patients underwent hematopoietic autologous stem cell transplantation (auto-HSCT), 22 patients received allogeneic hematopoietic stem cell transplantation (allo-HSCT), their median follow-up time was 62 (1-174) months, from them 1 patients was not engrafted in each group, 4 patients underwent allo-HSCT died within 1 month after transplantation. The 3-year overall survival rates in auto- and allo-HSCT groups were 42.3% (95% CI 24.1-60.5%) and 42.9% (95% CI 21.7-64.1%) respectively, 11 and 3 patients died of relapse after auto-HSCT and allo-HSCT, respectively, the treatment-related mortality (TRM) was 22.6% (95% CI 6.1%-39.0%) and 48.7% (95% CI 26.8%-70.7%), respectively. Univariate analysis showed that bone marrow involvement at diagnosis was associated with poor prognosis. In allo-HSCT group, PIT showed statistically significant difference in both OS and PFS between the patients without or with one risk factor and the patients with 3-4 risk factors.The relapse rate of relapse/refractory patients is high after auto-HSCT. The TRM is high after allo-HSCT, but long term survival is promising. The prognostic index for PTCL can reliably assess the prognosis of PTCL.