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Type: Journal article
Title: Genetic variants associated with increased risk of malignant pleural mesothelioma: a genome-wide association study
Author: Matullo, G.
Guarrera, S.
Betti, M.
Fiorito, G.
Ferrante, D.
Voglino, F.
Cadby, G.
Di Gaetano, C.
Rosa, F.
Russo, A.
Hirvonen, A.
Casalone, E.
Tunesi, S.
Padoan, M.
Giordano, M.
Aspesi, A.
Casadio, C.
Ardissone, F.
Ruffini, E.
Betta, P.
et al.
Citation: PLoS One, 2013; 8(4):e61253-1-e61253-11
Publisher: Public Library of Science
Issue Date: 2013
ISSN: 1932-6203
Statement of
Giuseppe Matullo ... Lyle J. Palmer ... et al.
Abstract: Asbestos exposure is the main risk factor for malignant pleural mesothelioma (MPM), a rare aggressive tumor. Nevertheless, only 5–17% of those exposed to asbestos develop MPM, suggesting the involvement of other environmental and genetic risk factors. To identify the genetic risk factors that may contribute to the development of MPM, we conducted a genome-wide association study (GWAS; 370,000 genotyped SNPs, 5 million imputed SNPs) in Italy, among 407 MPM cases and 389 controls with a complete history of asbestos exposure. A replication study was also undertaken and included 428 MPM cases and 1269 controls from Australia. Although no single marker reached the genome-wide significance threshold, several associations were supported by haplotype-, chromosomal region-, gene- and gene-ontology process-based analyses. Most of these SNPs were located in regions reported to harbor aberrant alterations in mesothelioma (SLC7A14, THRB, CEBP350, ADAMTS2, ETV1, PVT1 and MMP14 genes), causing at most a 2–3-fold increase in MPM risk. The Australian replication study showed significant associations in five of these chromosomal regions (3q26.2, 4q32.1, 7p22.2, 14q11.2, 15q14). Multivariate analysis suggested an independent contribution of 10 genetic variants, with an Area Under the ROC Curve (AUC) of 0.76 when only exposure and covariates were included in the model, and of 0.86 when the genetic component was also included, with a substantial increase of asbestos exposure risk estimation (odds ratio, OR: 45.28, 95% confidence interval, CI: 21.52–95.28). These results showed that genetic risk factors may play an additional role in the development of MPM, and that these should be taken into account to better estimate individual MPM risk in individuals who have been exposed to asbestos.
Keywords: Humans; Mesothelioma; Pleural Neoplasms; Genetic Predisposition to Disease; Asbestos; Neoplasm Proteins; Genetic Markers; Odds Ratio; Risk Factors; Case-Control Studies; Occupational Exposure; Polymorphism, Single Nucleotide; Aged; Middle Aged; Australia; Italy; Female; Male; Genome-Wide Association Study; Genetic Loci
Rights: © 2013 Matullo et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
RMID: 0020137913
DOI: 10.1371/journal.pone.0061253
Appears in Collections:Translational Health Science publications

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