Impact of Conditioning Regimen on Outcome of 2-Year Disease-Free Survivors of Autologous Stem Cell Transplantation for Hodgkin Lymphoma

Autologous stem cell transplantation (ASCT) is the standard of care for relapsed Hodgkin lymphoma (HL) yet the long-term outcomes for 2-year survivors after ASCT have not been well described. We report favorable outcomes of 225 patients with relapsed HL who were alive 2 years after ASCT. The type of chemotherapy regimen received before ASCT had an effect on outcomes. Background: Autologous stem cell transplantation is the standard of care for patients with relapsed HL and the long-term outcomes for survivors 2 years after ASCT have not been well described. No prospective trials have compared the effect of different conditioning regimens on outcomes. Patients and Methods: We searched the Nebraska Lymphoma Study Group database to identify patients with HL who received ASCT from 1984 to 2007. Patients were conditioned with either CBV (cyclophosphamide, carmustine, and etoposide) or BEAM (carmustine, etoposide, cytarabine, and melphalan). Results: At a median follow-up of 8 (range, 2-26) years, 225 patients were alive and disease-free 2 years after ASCT. Analysis was limited to these patients. At 5 years, the progression-free survival (PFS) was 92% for BEAM and 73% for CBV (P = .002) and the overall survival (OS) was 95% for BEAM and 87% for CBV (P = .07). At 10 years, the PFS was 79% for BEAM and 59% for CBV (P = .01) and the OS was 84% for BEAM and 66% for CBV (P = .02). Conclusion: Patients with HL who are disease-free and alive 2 years after ASCT have favorable outcomes. We observed lower risk of progression and longer survival associated with use of BEAM vs. CBV. Patients in the BEAM group received a transplant in more recent years so we cannot exclude the possibility that the superior outcomes seen in the BEAM group are because of better supportive care, use of peripheral blood stem cell grafts, or improvements in salvage therapies before transplantation. (C) 2013 Elsevier Inc. All rights reserved.