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Pingel, Julia; Solloch, Ute V; Hofmann, Jan A; Lange, Vinzenz; Ehninger, Gerhard; Schmidt, Alexander H
Human immunology, 03/2013, Volume: 74, Issue: 3Journal Article
Abstract In hematopoietic stem cell transplantation, human leukocyte antigens (HLA), usually HLA loci A, B, C, DRB1 and DQB1, are required to check histocompatibility between a potential donor and the recipient suffering from a malignant or non-malignant blood disease. As databases of potential unrelated donors are very heterogeneous with respect to typing resolution and number of typed loci, donor registries make use of haplotype frequency-based algorithms to provide matching probabilities for each potentially matching recipient/donor pair. However, it is well known that HLA allele and haplotype frequencies differ significantly between populations. We estimated high-resolution HLA-A, -B, -C, -DRB1 haplotype and allele frequencies of donors within DKMS German Bone Marrow Donor Center with parentage from 17 different countries: Turkey, Poland, Italy, Russian Federation, Croatia, Greece, Austria, Kazakhstan, France, The Netherlands, Republic of China, Romania, Portugal, USA, Spain, United Kingdom and Bosnia and Herzegovina. 5-locus haplotypes including HLA-DQB1 are presented for Turkey, Poland, Italy and Russian Federation. We calculated linkage disequilibria for each sample. Genetic distances between included countries could be shown to reflect geography. We further demonstrate how genetic differences between populations are reflected in matching probabilities of recipient/donor pairs and how they influence the search for unrelated donors as well as strategic donor center typings.
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