PMID- 31741008 OWN - NLM STAT- MEDLINE DCOM- 20191230 LR - 20211204 IS - 1432-1211 (Electronic) IS - 0093-7711 (Linking) VI - 71 IP - 10 DP - 2019 Nov TI - Single haplotype admixture models using large scale HLA genotype frequencies to reproduce human admixture. PG - 589-604 LID - 10.1007/s00251-019-01144-7 [doi] AB - The human leukocyte antigen (HLA) is the most polymorphic region in humans. Anthropologists use HLA to trace populations' migration and evolution. However, recent admixture between populations can mask the ancestral haplotype frequency distribution. We present a statistical method based on high-resolution HLA haplotype frequencies to resolve population admixture using a non-negative matrix factorization formalism and validated using haplotype frequencies from 56 world populations. The result is a minimal set of source components (SCs) decoding roughly 90% of the total variance in the studied admixtures. These SCs agree with the geographical distribution, phylogenies, and recent admixture events of the studied groups. With the growing population of multi-ethnic individuals, or individuals that do not report race/ethnic information, the HLA matching process for stem-cell and solid organ transplants is becoming more challenging. The presented algorithm provides a framework that facilitates the breakdown of highly admixed populations into SCs, which can be used to better match the rapidly growing population of multi-ethnic individuals worldwide. FAU - Simanovsky, Alexandra Litinsky AU - Simanovsky AL AD - Department of Mathematics and Gonda brain research institute, Bar-Ilan University, 52900, Ramat-Gan, Israel. FAU - Madbouly, Abeer AU - Madbouly A AD - Bioinformatics Research, Center for International Blood and Marrow Transplant Research, Minneapolis, MN, USA. FAU - Halagan, Michael AU - Halagan M AD - Bioinformatics Research, Center for International Blood and Marrow Transplant Research, Minneapolis, MN, USA. FAU - Maiers, Martin AU - Maiers M AD - Bioinformatics Research, Center for International Blood and Marrow Transplant Research, Minneapolis, MN, USA. FAU - Louzoun, Yoram AU - Louzoun Y AUID- ORCID: 0000-0003-1714-6148 AD - Department of Mathematics and Gonda brain research institute, Bar-Ilan University, 52900, Ramat-Gan, Israel. louzouy@math.biu.ac.il. LA - eng PT - Journal Article DEP - 20191118 PL - United States TA - Immunogenetics JT - Immunogenetics JID - 0420404 RN - 0 (HLA Antigens) SB - IM MH - Ethnicity/*genetics MH - Gene Frequency MH - Genotype MH - HLA Antigens/*classification/*genetics MH - *Haplotypes MH - Histocompatibility Testing/*methods/statistics & numerical data MH - Humans MH - Linkage Disequilibrium MH - *Models, Genetic OTO - NOTNLM OT - Genetic admixture OT - HLA OT - Non-negative matrix factorization OT - Stem-cell donor registry OT - Unsupervised learning EDAT- 2019/11/20 06:00 MHDA- 2019/12/31 06:00 CRDT- 2019/11/20 06:00 PHST- 2019/04/17 00:00 [received] PHST- 2019/10/19 00:00 [accepted] PHST- 2019/11/20 06:00 [pubmed] PHST- 2019/12/31 06:00 [medline] PHST- 2019/11/20 06:00 [entrez] AID - 10.1007/s00251-019-01144-7 [pii] AID - 10.1007/s00251-019-01144-7 [doi] PST - ppublish SO - Immunogenetics. 2019 Nov;71(10):589-604. doi: 10.1007/s00251-019-01144-7. Epub 2019 Nov 18.