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. 2008 Jul 15;178(2):203-7.
doi: 10.1164/rccm.200710-1554OC. Epub 2008 Apr 17.

Mapping of a novel susceptibility locus suggests a role for MC3R and CTSZ in human tuberculosis

Affiliations

Mapping of a novel susceptibility locus suggests a role for MC3R and CTSZ in human tuberculosis

Graham S Cooke et al. Am J Respir Crit Care Med. .

Erratum in

  • Am J Respir Crit Care Med. 2009 Apr 1;179(7):624

Abstract

Rationale: Tuberculosis remains a major cause of morbidity and mortality in the developing world. A better understanding of the mechanisms of disease protection could allow novel strategies to disease management and control.

Objectives: To identify human genomic loci with evidence of linkage to tuberculosis susceptibility and, within these loci, to identify individual genes influencing tuberculosis susceptibility.

Methods: Affected sibling pair analysis in South African and Malawian populations. Independent case-control study in West Africa.

Measurements and main results: Two novel putative loci for tuberculosis susceptibility are identified: chromosome 6p21-q23 and chromosome 20q13.31-33--the latter with the strongest evidence for any locus reported to date in human tuberculosis (single point LOD score of 3.1, P = 10(-4), with a maximum likelihood score [MLS] of 2.8). An independent, multistage genetic association study in West African populations mapped this latter region in detail, finding evidence that variation in the melanocortin 3 receptor (MC3R) and cathepsin Z (CTSZ) genes play a role in the pathogenesis of tuberculosis.

Conclusions: These results demonstrate how a genomewide approach to the complex phenotype of human tuberculosis can identify novel targets for further research.

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Figures

<b>Figure 1.</b>
Figure 1.
Multipoint mapping of chromosome 20 for all populations studied. Peak of linkage corresponds to marker 20s171.

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