» Articles » PMID: 31741008

Single Haplotype Admixture Models Using Large Scale HLA Genotype Frequencies to Reproduce Human Admixture

Overview
Journal Immunogenetics
Date 2019 Nov 20
PMID 31741008
Citations 1
Authors
Affiliations
Soon will be listed here.
Abstract

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.

Citing Articles

Influence of HLA Class II Polymorphism on Predicted Cellular Immunity Against SARS-CoV-2 at the Population and Individual Level.

Copley H, Gragert L, Leach A, Kosmoliaptsis V Front Immunol. 2021; 12:669357.

PMID: 34349756 PMC: 8327207. DOI: 10.3389/fimmu.2021.669357.

References
1.
Porras-Hurtado L, Ruiz Y, Santos C, Phillips C, Carracedo A, Lareu M . An overview of STRUCTURE: applications, parameter settings, and supporting software. Front Genet. 2013; 4:98. PMC: 3665925. DOI: 10.3389/fgene.2013.00098. View

2.
Bryc K, Durand E, Macpherson J, Reich D, Mountain J . The genetic ancestry of African Americans, Latinos, and European Americans across the United States. Am J Hum Genet. 2014; 96(1):37-53. PMC: 4289685. DOI: 10.1016/j.ajhg.2014.11.010. View

3.
Malaspinas A, Westaway M, Muller C, Sousa V, Lao O, Alves I . A genomic history of Aboriginal Australia. Nature. 2016; 538(7624):207-214. PMC: 7617037. DOI: 10.1038/nature18299. View

4.
Voight B, Kudaravalli S, Wen X, Pritchard J . A map of recent positive selection in the human genome. PLoS Biol. 2006; 4(3):e72. PMC: 1382018. DOI: 10.1371/journal.pbio.0040072. View

5.
Slater N, Louzoun Y, Gragert L, Maiers M, Chatterjee A, Albrecht M . Power laws for heavy-tailed distributions: modeling allele and haplotype diversity for the national marrow donor program. PLoS Comput Biol. 2015; 11(4):e1004204. PMC: 4406525. DOI: 10.1371/journal.pcbi.1004204. View