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HLA-Mismatched Unrelated Donors as an Alternative Graft Source for Allogeneic Stem Cell Transplantation after Antithymocyte Globulin-Containing Conditioning Regimen
- Source :
-
Biology of Blood & Marrow Transplantation . Apr2009, Vol. 15 Issue 4, p454-462. 9p. - Publication Year :
- 2009
-
Abstract
- Abstract: Between August 1996 and December 2004, 369 patients with a median age of 41 years (range: 1-68 years) received stem cell transplantation (SCT) from unrelated donors after an antithymocyte-globulin (ATG)-containing conditioning regimen. In 268 patients, complete molecular typing (4-digit) of HLA-A, -B, -C, -DRB1, and -DQB1 was available: 110 patients were completely matched for 10 alleles, 91 patients had 1 allele-mismatch (9/10), and 67 patients were mismatched for 2-4 alleles (6-8/10). The incidence of grade II-IV acute graft-versus-host disease (aGVHD) was 33% in the 10/10, 41% in the 9/10, and 40% in the 6-8/10 group, respectively (P = .1). The cumulative incidence of treatment-related mortality (TRM) and relapse among the groups were similar (27%, 31%, and 32%, P = .2; and 28%, 27%, and 26%, P = .9. After a median follow-up of 35 months (range: 3-120 months), the estimated 5-year disease-free survival (DFS) was 42% and did not differ among the 10/10, the 9/10, and the 6-8/10-mismatched groups (45% versus 42% versus 39%) (P = .5). In multivariate analysis, only age (hazard ratio [HR] 1.013) (P = .004) and bad-risk disease (HR 1.975) (P < .001) were independent risk factors for DFS. In conclusion, pretransplant ATG allows allogeneic SCT from unrelated donors with HLA disparities. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 10838791
- Volume :
- 15
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Biology of Blood & Marrow Transplantation
- Publication Type :
- Academic Journal
- Accession number :
- 36973164
- Full Text :
- https://doi.org/10.1016/j.bbmt.2009.01.002