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Blood, 15 January 2005, Vol. 105, No. 2, pp. 548-551.
Prepublished online as a Blood First Edition Paper on September 14, 2004; DOI 10.1182/blood-2004-03-1000.
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Submitted March 17, 2004
Accepted September 1, 2004
Increased risk of extensive chronic graft-versus-host disease after allogeneic peripheral blood stem cell transplantation using unrelated donors
Mats Remberger*, Dietrich W Beelen, Axel Fauser, Nadezda Basara, Oliver Basu, and Olle Ringden
Department of Clinical Immunology, Centre for Allogeneic Stem Cell Transplantation, Huddinge University Hospital, Stockholm, Sweden
Department of Bone Marrow Transplantation, University Hospital Essen, Essen, Germany
Clinic of BMT, Haematology and Oncology, Idar-Oberstein, Germany
Department of Paediatric Haematology, Oncology and Oncology, University Hospital Essen, Essen, Germany
* Corresponding author; email: mats.remberger{at}labmed.ki.se.
The long-term follow-up of a study including 214 patients receiving either peripheral blood stem cells (PBSC) or bone marrow from an HLA-A, -B and -DR-compatible unrelated donor is presented. Median follow-up were 4.4 (2.3-7.3) and 5.0 (0.7-8.4) years in the two groups, respectively. Cumulative incidence of overall chronic GVHD were similar in the two groups (78% vs. 71%), while extensive chronic GVHD was significantly more common in the PBSC group compared to the BM group (39% vs. 24%, p=0.03). The five-year transplant-related mortality (TRM) were 37% in the PBSC group and 35% in the BM controls (p=0.7) and overall survival were 42% in both groups. The relapse incidences were 26% and 27% in the two groups, respectively, resulting in a disease-free survival of 41% in both groups.
In conclusion, PBSC from HLA-compatible unrelated donors results in similar outcome compared to BM, but imply an increased risk for extensive chronic GVHD.

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