Vitamin D receptor polymorphisms and susceptibility to tuberculosis in West Africa: a case-control and family study

J Infect Dis. 2004 Nov 1;190(9):1631-41. doi: 10.1086/424462. Epub 2004 Sep 28.

Abstract

Vitamin D receptor (VDR) gene polymorphisms have been implicated in susceptibility to tuberculosis (TB), but reports have been inconsistent. We genotyped the VDR single-nucleotide polymorphisms (SNPs) FokI, BsmI, ApaI, and TaqI in 1139 case patients and control subjects and 382 families from The Gambia, Guinea, and Guinea-Bissau. The transmission-disequilibrium test on family data showed a significant global association of TB with SNP combinations FokI-BsmI-ApaI-TaqI and FokI-ApaI that were driven by the increased transmission to affected offspring of the FokI F and ApaI A alleles in combination. The ApaI A allele was also transmitted to affected offspring significantly more often than expected. Case-control analysis showed no statistically significant association between TB and VDR variants. BsmI, ApaI, and TaqI showed strong linkage disequilibrium. The significance of the family-based associations found between TB and FokI-BsmI-ApaI-TaqI and the FA haplotype supports a role for VDR haplotypes, rather than individual genotypes, in susceptibility to TB.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Africa, Western
  • Case-Control Studies
  • DNA / isolation & purification
  • DNA / metabolism
  • Deoxyribonucleases, Type II Site-Specific / metabolism
  • Disease Transmission, Infectious
  • Female
  • Gene Frequency
  • Genetic Predisposition to Disease*
  • Haplotypes
  • Humans
  • Male
  • Middle Aged
  • Polymorphism, Single Nucleotide*
  • Receptors, Calcitriol / genetics*
  • Tuberculosis / genetics*

Substances

  • Receptors, Calcitriol
  • DNA
  • endodeoxyribonuclease BsmI
  • endodeoxyribonuclease FokI
  • Deoxyribonucleases, Type II Site-Specific
  • GGGCCC-specific type II deoxyribonucleases
  • TCGA-specific type II deoxyribonucleases