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© Research
Publication : PLoS genetics

Genome-wide association study of resistance to Mycobacterium tuberculosis infection identifies a locus at 10q26.2 in three distinct populations.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in PLoS genetics - 01 Mar 2021

Quistrebert J, Orlova M, Kerner G, Ton LT, Luong NT, Danh NT, Vincent QB, Jabot-Hanin F, Seeleuthner Y, Bustamante J, Boisson-Dupuis S, Huong NT, Ba NN, Casanova JL, Delacourt C, Hoal EG, Alcaïs A, Thai VH, Thành LT, Abel L, Schurr E, Cobat A,

Link to Pubmed [PMID] – 33661925

Link to DOI – 10.1371/journal.pgen.1009392

PLoS Genet 2021 Mar; 17(3): e1009392

The natural history of tuberculosis (TB) is characterized by a large inter-individual outcome variability after exposure to Mycobacterium tuberculosis. Specifically, some highly exposed individuals remain resistant to M. tuberculosis infection, as inferred by tuberculin skin test (TST) or interferon-gamma release assays (IGRAs). We performed a genome-wide association study of resistance to M. tuberculosis infection in an endemic region of Southern Vietnam. We enrolled household contacts (HHC) of pulmonary TB cases and compared subjects who were negative for both TST and IGRA (n = 185) with infected individuals (n = 353) who were either positive for both TST and IGRA or had a diagnosis of TB. We found a genome-wide significant locus on chromosome 10q26.2 with a cluster of variants associated with strong protection against M. tuberculosis infection (OR = 0.42, 95%CI 0.35-0.49, P = 3.71×10-8, for the genotyped variant rs17155120). The locus was replicated in a French multi-ethnic HHC cohort and a familial admixed cohort from a hyper-endemic area of South Africa, with an overall OR for rs17155120 estimated at 0.50 (95%CI 0.45-0.55, P = 1.26×10-9). The variants are located in intronic regions and upstream of C10orf90, a tumor suppressor gene which encodes an ubiquitin ligase activating the transcription factor p53. In silico analysis showed that the protective alleles were associated with a decreased expression in monocytes of the nearby gene ADAM12 which could lead to an enhanced response of Th17 lymphocytes. Our results reveal a novel locus controlling resistance to M. tuberculosis infection across different populations.

https://pubmed.ncbi.nlm.nih.gov/33661925