Outcome of allogeneic haematopoietic stem cell transplantation in aplastic anaemia

Parvez Ahmed, Qamar-un-Nisa Chaudhry, Shahid Raza, Syed Kamran Mahmood, Tariq Mehmood Satti, Masood Anwar, Chaudhry Altaf, Nighat Shahbaz, Humayoon Shafique Satti
Journal of the College of Physicians and Surgeons—Pakistan: JCPSP 2012, 22 (9): 553-9

OBJECTIVE: To analyze factors associated with survival, rejection and graft versus host disease in aplastic anaemia patients undergoing allogeneic haematopoietic stem cell transplantation (SCT) from HLA matched sibling donors.

STUDY DESIGN: Analytical study.

PLACE AND DURATION OF STUDY: Armed Forces Bone Marrow Transplant Centre, Rawalpindi, Pakistan from July 2001 to June 2010.

METHODOLOGY: Consecutive aplastic anaemia (AA) patients undergoing haematopoietic stem cell transplantation from HLA-matched sibling donors at this centre were included in this study. Potential factors affecting overall survival, rejection, disease-free survival and graft versus host disease were analyzed. Survival analysis was done by Kaplan-Meier method. Cox regression model was applied for multivariate analysis.

RESULTS: Ninety male and thirty-five female patients with AA were included in the study. Median age was 18 years. Conditioning regimens used were cyclophosphamide (Cy) plus antilymphocyte globulin (ALG) or antithymocyte globulin (ATG), fludarabine (FLU) +Cy+ATG, Campath 1-H +Cy in 89, 30 and 6 cases respectively. GVHD prophylaxis used was ciclosporin (CSA) plus prednisolone and short methotrexate in 81 while 44 received CSA plus prednisolone. At a median follow-up of 1185 days OS and DFS were 84% and 78% respectively. Factors associated with better OS were male sex, Flu/Cy/ATG conditioning and use of bone marrow as stem cell source.

CONCLUSION: Flu/Cy/ATG conditioning regimen, bone marrow as stem cell source and CSA, prednisolone and short methotrexate regimen were associated with better survival in AA.

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