Blood Res  
Safety and efficacy of bendamustine in the conditioning regimen for autologous stem cell transplantation in patients with relapsed/refractory lympho
Munira Shabbir-Moosajee1, Samad Jehangir2, Sobiya Sawani3, Tariq Muhammed2, Natasha Ali4, Usman Sheikh4,Salman Adil4
1Hematology/Oncology and Bone Marrow Transplantation, Department of Oncology, 2Department of Oncology, Aga Khan University Hospital, 3Department of Community Health Sciences, 4Hematology and Laboratory medicine, Aga Khan University Hospital, Karachi, Pakistan
Correspondence to: Munira Shabbir-Moosajee, M.D.
Hematology/Oncology and Bone Marrow Transplantation,Department of Oncology,Aga Khan University Hospital, Karachi 74800, Pakistan
E-mail: munira.moosajee@aku.edu
Published online: April 11, 2019.
© The Korean Journal of Hematology. All rights reserved.

Abstract
Background: Bendamustine is an attractive option for the management of both de novo and relapsed lymphomas. It is being increasingly used in the conditioning regimen for autologous stem cell transplantation (SCT) and can be an alternative to the traditionally-used carmustine. In this study, we aimed to determine the safety and efficacy of bendamustine in the conditioning regimen for autologous SCT in refractory/relapsed lymphomas.
Methods: We designed a descriptive study to evaluate bendamustine in combination with etoposide, cytarabine, and melphalan (BeEAM) in the conditioning regimen for autologous SCT.
Results: Fourteen patients (median age, 28 yr) with Hodgkin’s Lymphoma (HL) (N=8), Non-Hodgkin’s lymphomas (NHL) (N=5), or peripheral T-cell lymphoma, not otherwise specified (PTCL NOS) (N=1) were included in the study. A median number of 5.95×106 CD34+ cells/kg were transfused. Median times to absolute neutrophil count and platelet engraftment were 17 days and 24 days, respectively. The 100-day transplantation mortality rate was 28% (4 patients). Eight patients (57.14%) had GII-III acute kidney injury, four patients (28.5%) had GIII-IV hyperbilirubinemia, and twelve patients (85%) had GII-III diarrhea. After 3 months, 37% (5 patients) and 21.4% (3 patients) demonstrated complete response and partial response, respectively. The median follow-up was 5.5 months (15 days–19 mo). At the final follow-up, 7 patients (50%) were alive and in CR.
Conclusions: Our study showed that bendamustine is a potentially toxic agent in the conditioning regimen for autologous SCT, resulting in significant liver, kidney, and gastrointestinal toxicity. Further studies are required to assess its safety and efficacy at reduced doses.
Keywords: Bendamustine, Toxicity, Autologous stem cell transplant, Lymphoma


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