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Blood, 1 March 2007, Vol. 109, No. 5, pp. 2256-2262.
Prepublished online as a Blood First Edition Paper on October 12, 2006; DOI 10.1182/blood-2006-07-036657.
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TRANSPLANTATION
Unrelated donor bone marrow transplantation for the treatment of Fanconi anemia
John E. Wagner1,
Mary Eapen2,
Margaret L. MacMillan1,
Richard E. Harris3,
Ricardo Pasquini4,
Farid Boulad5,
Mei-Jie Zhang2, and
Arleen D. Auerbach6
1 Division of Pediatric Hematology, Oncology, and Blood and Marrow Transplantation, University of Minnesota Blood and Marrow Transplant Program, Minneapolis;
2 Center for International Blood and Marrow Transplant Research, Medical College of Wisconsin, Milwaukee;
3 Cincinnati Children's Hospital, OH;
4 Hospital de ClinicasFederal University of Parana, Brazil;
5 Memorial Sloan-Kettering Cancer Center, New York, NY;
6 Laboratory of Human Genetics and Hematology, Rockefeller University, New York, NY
Bone marrow transplantation (BMT) is the only known cure for the hematologic manifestations of Fanconi anemia (FA). Potential benefits of unrelated donor BMT for FA, however, have been severely limited by graft rejection and treatment-related mortality with resultant poor survival. Therefore, we evaluated the impact of potential prognostic factors on hematopoietic recovery, graft-versus-host disease (GVHD), and mortality in 98 recipients of unrelated donor BMT who received transplants between 1990 and 2003. Probabilities of neutrophil (89% vs 69%; P = .02) and platelet (74% vs 23%; P < .001) recovery were higher after fludarabine-containing regimens than nonfludarabine-containing regimens. Risks of acute GVHD (relative risk [RR], 4.29; P < .001) were higher with nonT-celldepleted grafts. The day-100 mortality rate was significantly higher after nonfludarabine-containing regimens than fludarabine-containing regimens (65% vs 24%, respectively; P < .001). Corresponding 3-year adjusted overall survival rates were 13% versus 52% (P < .001). In addition, mortality was higher in recipients who were older (> 10 years), who were cytomegalovirus (CMV) seropositive, and who received more than 20 blood product transfusions before BMT. Based on these results, significant practice changes are suggested: use of a fludarabine-containing conditioning regimen in the context of T-celldepleted marrow allografts, and earlier referral for transplantation prior to excessive transfusions in patients with marrow failure.

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