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  • Title: Association between interleukin-8 gene alleles and human susceptibility to tuberculosis disease.
    Author: Ma X, Reich RA, Wright JA, Tooker HR, Teeter LD, Musser JM, Graviss EA.
    Journal: J Infect Dis; 2003 Aug 01; 188(3):349-55. PubMed ID: 12870115.
    Abstract:
    Interleukin (IL)-8 is involved in the pathogenesis of human tuberculosis (TB). However, the contribution of polymorphisms of the IL-8 gene and its receptor genes CXCR-1 and CXCR-2 to human TB susceptibility remains untested. In a case-control study, white subjects with TB disease were more likely to be homozygous for the IL-8 -251A allele, compared with control subjects (odds ratio [OR], 3.41; 95% confidence interval [CI], 1.52-7.64). African Americans with TB also showed an increased odds of being homozygous for this allele (OR, 3.46; 95% CI, 1.48-8.08). To exclude population artifacts in the case-control study, a separate analysis that used a transmission-disequilibrium test with 76 informative families confirmed that the IL-8 -251A allele was preferentially transmitted to TB-infected children (P=.02). CXCR-1 and CXCR-2 did not demonstrate significant associations with TB susceptibility. These data suggest that IL-8 is important in the genetic control of human TB susceptibility.
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