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The influence of genetic variability on the risk of developing malignant mesothelioma Cover

The influence of genetic variability on the risk of developing malignant mesothelioma

Open Access
|Jan 2018

Abstract

Background

Malignant mesothelioma is a rare cancer with poor outcome, associated with asbestos exposure. Reactive oxygen species may play an important role in the mechanism of carcinogenesis; therefore, genetic variability in antioxidative defence may modify an individual’s susceptibility to this cancer. This study investigated the influence of functional polymorphisms of NQO1, CAT, SOD2 and hOGG1 genes, gene-gene interactions and gene-environment interactions on malignant mesothelioma risk.

Patients and methods

In total, 150 cases with malignant mesothelioma and 122 controls with no asbestos-related disease were genotyped for NQO1, CAT, SOD2 and hOGG1 polymorphisms.

Results

The risk of malignant mesothelioma increased with smoking, odds ratio (OR) 9.30 [95% confidence interval (CI): 4.83–17.98] and slightly with age, OR 1.10 (95% CI: 1.08–1.14). Medium and high asbestos exposures represented 7-times higher risk of malignant mesothelioma compared to low exposure, OR 7.05 (95% CI 3.59–13.83). NQO1 rs1800566 was significantly associated with increased malignant mesothelioma risk, OR 1.73 (95% CI 1.02–2.96). Although there was no independent association between either CAT rs1001179 or hOGG1 rs1052133 polymorphism and malignant mesothelioma, interaction between both polymorphisms showed a protective effect, ORint 0.27 (95% CI 0.10–0.77).

Conclusions

Our findings suggest a role of both genetic variability in antioxidative defence and repair as well as the impact of gene-gene interactions in the development of malignant mesothelioma. The results of this study could add to our understanding of pathogenesis of malignant mesothelioma and contribute to prevention and earlier diagnosis of this aggressive cancer.

DOI: https://doi.org/10.2478/raon-2018-0004 | Journal eISSN: 1581-3207 | Journal ISSN: 1318-2099
Language: English
Page range: 105 - 111
Submitted on: Sep 3, 2017
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Accepted on: Sep 12, 2017
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Published on: Jan 24, 2018
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2018 Alenka Franko, Nika Kotnik, Katja Goricar, Viljem Kovac, Metoda Dodic-Fikfak, Vita Dolzan, published by Association of Radiology and Oncology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.