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Blood, 15 August 2007, Vol. 110, No. 4, pp. 1397-1400. Prepublished online as a Blood First Edition Paper on May 2, 2007; DOI 10.1182/blood-2007-03-081596.
TRANSPLANTATION Worse outcome and more chronic GVHD with peripheral blood progenitor cells than bone marrow in HLA-matched sibling donor transplants for young patients with severe acquired aplastic anemia1 Institute of Clinical Transfusion Medicine and Immunogenetics, University of Ulm, Germany; 2 Hopitaux Universitaires, Geneva, Switzerland; 3 St George's Hospital Medical School, London, United Kingdom 4 Ospedale S. Martino, Genova, Italy; 5 Medical College of Wisconsin, Milwaukee; 6 Hospital Britanico, Buenos Aires, Argentina; 7 M. D. Anderson Cancer Center, Houston, TX; 8 Center for Advanced Studies in Leukemia, Los Angeles, CA; 9 Universitat Munchen, Munich, Germany; 10 The Statistical Center, Center for International Blood and Marrow Transplant Research, Medical College of Wisconsin, Milwaukee; 11 Ospedale S. Camillo-Forlanini, Rome, Italy; 12 University Medical Center, Nijmegen, the Netherlands; 13 St Louis Hospital-1, Paris, France We analyzed the outcome of 692 patients with severe aplastic anemia (SAA) receiving transplants from HLA-matched siblings. A total of 134 grafts were peripheral blood progenitor cell (PBPC) grafts, and 558 were bone marrow (BM) grafts. Rates of hematopoietic recovery and grades 2 to 4 chronic graft-versus-host disease (GVHD) were similar after PBPC and BM transplantations regardless of age at transplantation. In patients older than 20 years, chronic GVHD and overall mortality rates were similar after PBPC and BM transplantations. In patients younger than 20 years, rates of chronic GVHD (relative risk [RR] 2.82; P = .002) and overall mortality (RR 2.04; P = .024) were higher after transplantation of PBPCs than after transplantation of BM. In younger patients, the 5-year probabilities of overall survival were 73% and 85% after PBPC and BM transplantations, respectively. Corresponding probabilities for older patients were 52% and 64%. These data indicate that BM grafts are preferred to PBPC grafts in young patients undergoing HLA-matched sibling donor transplantation for SAA.
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