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Blood, 1 September 2008, Vol. 112, No. 5, pp. 2156-2159. Prepublished online as a Blood First Edition Paper on June 10, 2008; DOI 10.1182/blood-2008-02-139766.
TRANSPLANTATION A single nucleotide polymorphism at chromosome 2q21.3 (LCT –13910C>T) associates with clinical outcome after allogeneic hematopoietic stem cell transplantation1 1st Department of Internal Medicine and 2 3rd Department of Internal Medicine, Elisabethinen Hospital, Linz, Austria A single nucleotide polymorphism (SNP) responsible for lactase persistence (LCT –13910C>T) changes intestinal microflora. Considering the influence of bacterial microflora on various immune effects, we tested DNA from 111 recipients/donors and analyzed whether this SNP interferes with survival and the incidence of acute graft-versus-host disease (aGVHD) after allogeneic hematopoetic stem cell tranplantations (HSCT). Median overall survival (OS) was significantly longer when donors had a CC genotype (not reached after 133 vs 11.1 months, P = .004). Multivariate analysis identified a donor T allele (hazard ratio 2.63, 95% confidence interval 1.29-5.33, P = .008) as independent risk factor for death. Surprisingly, recipient genotypes did not influence outcome and there were no differences regarding aGVHD. Transplantation-related mortality (TRM), relapse and pneumonia were significantly less frequent in patients with CC donors. These findings add to the growing list of non-HLA polymorphisms with impact on outcome after allogeneic HSCT.
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| Copyright © 2008 by American Society of Hematology Online ISSN: 1528-0020 | |||||||||