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Occupational exposure to nickel and hexavalent chromium and the risk of lung cancer in a pooled analysis of case-control studies (SYNERGY)


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Behrens, Thomas; Ge, Calvin; Vermeulen, Roel; Kendzia, Benjamin; Olsson, Ann; Schüz, Joachim; Kromhout, Hans; Pesch, Beate; Peters, Susan; Portengen, Lützen; Gustavsson, Per; Mirabelli, Dario; Guénel, Pascal; Luce, Danièle; Consonni, Dario; Caporaso, Neil E; Landi, Maria Teresa; Field, John K; Karrasch, Stefan; Wichmann, Heinz-Erich; Siemiatycki, Jack; Parent, Marie-Élise ORCID logoORCID: https://orcid.org/0000-0002-4196-3773; Richiardi, Lorenzo; Simonato, Lorenzo; Jöckel, Karl-Heinz; Ahrens, Wolfgang; Pohlabeln, Hermann; Fernández-Tardón, Guillermo; Zaridze, David; McLaughlin, John R; Demers, Paul A; Świątkowska, Beata; Lissowska, Jolanta; Pándics, Tamás; Fabianova, Eleonora; Mates, Dana; Bencko, Vladimir; Foretova, Lenka; Janout, Vladimír; Boffetta, Paolo; Bueno-de-Mesquita, Bas; Forastiere, Francesco; Straif, Kurt et Brüning, Thomas (2022). Occupational exposure to nickel and hexavalent chromium and the risk of lung cancer in a pooled analysis of case-control studies (SYNERGY) International Journal of Cancer Prevention , vol. 152 , nº 4. pp. 645-660. DOI: 10.1002/ijc.34272.

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There is limited evidence regarding the exposure-effect relationship between lung-cancer risk and hexavalent chromium (Cr(VI)) or nickel. We estimated lung-cancer risks in relation to quantitative indices of occupational exposure to Cr(VI) and nickel and their interaction with smoking habits. We pooled 14 case-control studies from Europe and Canada, including 16,901 lung-cancer cases and 20,965 control subjects. A measurement-based job-exposure-matrix estimated job-year-region specific exposure levels to Cr(VI) and nickel, which were linked to the subjects' occupational histories. Odds ratios (OR) and associated 95% confidence intervals (CI) were calculated by unconditional logistic regression, adjusting for study, age group, smoking habits, and exposure to other occupational lung carcinogens. Due to their high correlation, we refrained from mutually adjusting for Cr(VI) and nickel independently. In men, ORs for the highest quartile of cumulative exposure to CR(VI) were 1.32 (95% CI 1.19-1.47) and 1.29 (95% CI 1.15-1.45) in relation to nickel. Analogous results among women were: 1.04 (95% CI 0.48-2.24) and 1.29 (95% CI 0.60-2.86), respectively. In men, excess lung-cancer risks due to occupational Cr(VI) and nickel exposure were also observed in each stratum of never, former and current smokers. Joint effects of Cr(VI) and nickel with smoking were in general greater than additive, but not differerent from multiplicative. In summary, relatively low cumulative levels of occupational exposure to Cr(VI) and nickel were associated with increased ORs for lung cancer, particularly in men. However, we cannot rule out a combined classical measurement and Berkson-type of error structure, which may cause differential bias of risk estimates. This article is protected by copyright. All rights reserved.

Type de document: Article
Mots-clés libres: SYNERGY; metals; pulmonary cancer; smoking; welders.
Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 08 déc. 2023 21:13
Dernière modification: 08 déc. 2023 21:13
URI: https://espace.inrs.ca/id/eprint/13341

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