Associations between HLA class II alleles in a North Indian population

Tissue Antigens. 1998 Jul;52(1):37-43. doi: 10.1111/j.1399-0039.1998.tb03021.x.


The HLA DR and DQ class II genes are in strong linkage disequilibrium and recombinaton is quite rare. However, many different DR-DQ haplotypes appear to have developed during evolution, giving rise to a variety of combinations with different distributions in populations. In the present report, 138 subjects from North India were studied for the alleles of HLA-DRB1, DRB3, DRB5, DQB1 and DQA1 loci using PCR-oligotyping. The probable haplotypes were constructed based on two-locus associations observed in this population. A frequent haplotype in this population, DRB1*1501-DRB5*0101-DQA1*0103-DQB1*0601, has been reported very rarely in other ethnic groups. Other DR2 haplotypes, like DRB1*1502-DRB5*0102-DQA1*0103-DQB1*0601, earlier reported in Caucasians, Chinese and Latin Americans, and DRB1*1502-DRB5*0102-DQA1*0103-DQB1*0503, earlier reported in Gypsies, were also observed. A relatively rare haplotype in Caucasians which was earlier reported in Gypsies from the Czech Republic, DRB1*1404-DRB3*0202-DQA1*0101-DQB1*0503, was observed frequently in Indians, suggesting the probable migration of Gypsies from India. The results suggest that the North Indian population contains a mixture of Caucasoid, Black and Chinese genes. Similarities with Gypsies and South-East Asian populations suggest the role of ancient migrations from India.

MeSH terms

  • Alleles*
  • Gene Frequency
  • Genes, MHC Class II*
  • HLA-DQ Antigens / genetics*
  • HLA-DQ Antigens / immunology
  • HLA-DR Antigens / genetics*
  • HLA-DR Antigens / immunology
  • Haplotypes
  • Humans
  • India
  • Racial Groups


  • HLA-DQ Antigens
  • HLA-DR Antigens