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Genetic modifiers of radon-induced lung cancer risk: a genome-wide interaction study in former uranium miners
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2018 (English)In: International Archives of Occupational and Environmental Health, ISSN 0340-0131, E-ISSN 1432-1246, Vol. 91, no 8, p. 937-950Article in journal (Refereed) Published
Abstract [en]

Purpose: Radon is a risk factor for lung cancer and uranium miners are more exposed than the general population. A genome-wide interaction analysis was carried out to identify genomic loci, genes or gene sets that modify the susceptibility to lung cancer given occupational exposure to the radioactive gas radon.

Methods: Samples from 28 studies provided by the International Lung Cancer Consortium were pooled with samples of former uranium miners collected by the German Federal Office of Radiation Protection. In total, 15,077 cases and 13,522 controls, all of European ancestries, comprising 463 uranium miners were compared. The DNA of all participants was genotyped with the OncoArray. We fitted single-marker and in multi-marker models and performed an exploratory gene-set analysis to detect cumulative enrichment of significance in sets of genes.

Results: We discovered a genome-wide significant interaction of the marker rs12440014 within the gene CHRNB4 (OR = 0.26, 95% CI 0.11–0.60, p = 0.0386 corrected for multiple testing). At least suggestive significant interaction of linkage disequilibrium blocks was observed at the chromosomal regions 18q21.23 (p = 1.2 × 10−6), 5q23.2 (p = 2.5 × 10−6), 1q21.3 (p = 3.2 × 10−6), 10p13 (p = 1.3 × 10−5) and 12p12.1 (p = 7.1 × 10−5). Genes belonging to the Gene Ontology term “DNA dealkylation involved in DNA repair” (GO:0006307; p = 0.0139) or the gene family HGNC:476 “microRNAs” (p = 0.0159) were enriched with LD-blockwise significance.

Conclusion: The well-established association of the genomic region 15q25 to lung cancer might be influenced by exposure to radon among uranium miners. Furthermore, lung cancer susceptibility is related to the functional capability of DNA damage signaling via ubiquitination processes and repair of radiation-induced double-strand breaks by the single-strand annealing mechanism.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 91, no 8, p. 937-950
Keywords [en]
GWAS, Radon progeny, Occupational exposure, Gene-environment interaction, DNA repair
National Category
Occupational Health and Environmental Health
Identifiers
URN: urn:nbn:se:umu:diva-155783DOI: 10.1007/s00420-018-1334-3ISI: 000455181700003PubMedID: 29971594OAI: oai:DiVA.org:umu-155783DiVA, id: diva2:1282988
Funder
NIH (National Institute of Health), U19-CA148127NIH (National Institute of Health), CA148127S1NIH (National Institute of Health), 1U19CA148127-02NIH (National Institute of Health), R01-DE12206NIH (National Institute of Health), P01-CA68384NIH (National Institute of Health), R01-DE13158NIH (National Institute of Health), UM1 CA167462NIH (National Institute of Health), CA111703NIH (National Institute of Health), 5R01 CA151989-01A1Available from: 2019-01-28 Created: 2019-01-28 Last updated: 2019-01-28Bibliographically approved

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Johansson, Mikael

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Rosenberger, AlbertRisch, AngelaJohansson, MikaelJohnen, Georg
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