Human Leukocyte Antigen-A, B, C, DRB1, and DQB1 Allele and Haplotype Frequencies in a Subset of 237 Donors in the South African Bone Marrow Registry

J Immunol Res. 2018 Apr 23:2018:2031571. doi: 10.1155/2018/2031571. eCollection 2018.

Abstract

Human leukocyte antigen- (HLA-) A, HLA-B, HLA-C, HLA-DRB1, and HLA-DQB1 allele and haplotype frequencies were studied in a subset of 237 volunteer bone marrow donors registered at the South African Bone Marrow Registry (SABMR). Hapl-o-Mat software was used to compute allele and haplotype frequencies from individuals typed at various resolutions, with some alleles in multiple allele code (MAC) format. Four hundred and thirty-eight HLA-A, 235 HLA-B, 234 HLA-DRB1, 41 HLA-DQB1, and 29 HLA-C alleles are reported. The most frequent alleles were A∗02:02g (0.096), B∗07:02g (0.082), C∗07:02g (0.180), DQB1∗06:02 (0.157), and DRB1∗15:01 (0.072). The most common haplotype was A∗03:01g~B∗07:02g~C∗07:02g~DQB1∗06:02~DRB1∗15:01 (0.067), which has also been reported in other populations. Deviations from Hardy-Weinberg equilibrium were observed in A, B, and DRB1 loci, with C~DQB1 being the only locus pair in linkage disequilibrium. This study describes allele and haplotype frequencies from a subset of donors registered at SABMR, the only active bone marrow donor registry in Africa. Although the sample size was small, our results form a key resource for future population studies, disease association studies, and donor recruitment strategies.

MeSH terms

  • Alleles
  • Black People
  • Bone Marrow Transplantation*
  • Gene Frequency
  • Genotype*
  • HLA-A Antigens / genetics*
  • HLA-B Antigens / genetics*
  • HLA-C Antigens / genetics*
  • HLA-DQ beta-Chains / genetics*
  • HLA-DRB1 Chains / genetics*
  • Haplotypes
  • Humans
  • Male
  • Registries*
  • Software
  • South Africa
  • Tissue Donors
  • Volunteers

Substances

  • HLA-A Antigens
  • HLA-B Antigens
  • HLA-C Antigens
  • HLA-DQ beta-Chains
  • HLA-DQB1 antigen
  • HLA-DRB1 Chains