alexa Clinical significance of HLA-E*0103 homozygosity on survival after allogeneic hematopoietic stem-cell transplantation.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Danzer M, Polin H, Prll J, Haunschmid R, Hofer K,

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Abstract BACKGROUND: Hematopoietic stem-cell transplantation is a well-established treatment in various hematologic malignancies, but the outcome depends on disease relapse, infections, and the development and severity of acute and chronic graft-versus-host disease. Some evidence has revealed an important role for the nonclassical major histocompatibility complex class I molecules in transplantation, most notably human leukocyte antigen (HLA)-E. This study evaluates the impact of HLA-E alleles on transplantation outcome after HLA-matched allogeneic HSCT. METHODS: We genotyped DNA for HLA-E polymorphism from 83 recipients and their respective donors by real-time polymerase chain reaction after melting curve analysis and compared the results with clinical outcome. RESULTS: HLA-E*0103 homozygous patients showed a higher probability of overall survival (P=0.003) and disease-free survival (P=0.001) in a univariate model. Cox regression analysis confirmed HLA-E*0103, 0103 (P=0.006; relative risk 1.12; 95\% confidence interval 0.31-1.94) and early stage of disease (P=0.005; relative risk 1.16; 95\% confidence interval 0.45-1.86) as independent factors improving overall survival. Moreover, homozygosity for HLA-E*0103 was associated with a significant decreased incidence of transplant-related mortality (P=0.01). CONCLUSIONS: We found an association between HLA-E*0103 homozygosity and the significant reduction of transplant-related mortality in related and unrelated HSCT. The risk of posttransplant complications was significantly reduced when the donor possesses the HLA-E*0103, 0103 genotype, and this was translated in a better overall survival. This article was published in Transplantation and referenced in Journal of Addiction Research & Therapy

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