HLA-DR and DQB1 gene polymorphism in the North-western Colombian population

P. A. Correa, W. C. Whitworth, T. Kuffner, J. McNicholl, J. M. Anaya

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HLA-DRB1, DRB3, DRB4, DRB5 and DQB1 polymorphisms were studied using molecular methods in a population of 100 unrelated healthy individuals from an area in north-west Colombia (Medellin) inhabited by the "Paisa", a community with features of a genetically isolated group. The most frequently observed specificities at the DRB1 locus were *07 (16.4%) and *15 (12%), and at the DQB1 locus *02 (18.8%) and *03 (33.6%), of which *0302 was the most prevalent allele (14.3%). The most polymorphic specificities were DRB1*04, 13 and 11, and DQB1*06. Both the HLA-DRB1 and DQB1 loci were in linkage disequilibrium. Haplotypes were estimated using maximum likelihood methods. The most frequent two locus haplotype was DRB1*07-DQB1*02 (6.6%) and these specificities were in linkage disequilibrium. Several unusual possible haplotypes were observed. Both the HLA-DRB1 and DQB1 locus were in Hardy-Weinberg equilibrium.

Original languageEnglish (US)
Pages (from-to)436-439
Number of pages4
JournalTissue Antigens
Issue number5
StatePublished - 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology
  • Biochemistry
  • Genetics


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