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Benzene Exposure and Lung Cancer Risk: A Systematic Review and Meta-Analysis of Human Studies

Author

Listed:
  • Manuela Chiavarini

    (Department of Biomedical Sciences and Public Health, Section of Hygiene, Preventive Medicine and Public Health, Polytechnic University of the Marche Region, 60126 Ancona, Italy)

  • Patrizia Rosignoli

    (Department of Chemistry, Biology and Biotechnology, University of Perugia, 06123 Perugia, Italy)

  • Beatrice Sorbara

    (Department of Chemistry, Biology and Biotechnology, University of Perugia, 06123 Perugia, Italy)

  • Irene Giacchetta

    (Department of Medicine and Surgery, Section of Public Heath, School of Hygiene and Preventive Medicine, University of Perugia, 06123 Perugia, Italy)

  • Roberto Fabiani

    (Department of Biomedical Sciences and Public Health, Section of Hygiene, Preventive Medicine and Public Health, Polytechnic University of the Marche Region, 60126 Ancona, Italy)

Abstract

Lung cancer is a leading cause of death with nearly 1.8 million deaths estimated worldwide in 2020. Although benzene is classified as a human carcinogen (Group 1) on the basis of its association with acute myeloid/non-lymphocytic leukaemia, there is still limited evidence that it may influence lung cancer risk. This study examined the potential link between benzene exposure and risk of lung cancer using a systematic review of epidemiological studies and meta-analysis. We searched through PubMed, Web of Science and Scopus databases up to 10 February 2023 to identify all articles on the association between benzene exposure and lung cancer (incidence or prevalence) and/or mortality. We extracted the risk estimates of the highest and the lowest reported categories of benzene exposure and conducted a meta-analysis using a random-effects model. Heterogeneity and publication bias were analysed using an I 2 test and funnel plots asymmetry, respectively. Twenty-one studies were included in the final analysis, with a total of 10,750 lung cancer cases and 2899 lung cancer deaths. Overall, risk estimates of lung cancer prevalence and mortality in association with benzene exposure were 1.20 ( n = 14; 95% CI 1.05–1.37) and 1.15 ( n = 13; 95% CI 1.02–1.30), respectively. In all cases, heterogeneity was quite large, while no significant publication bias was observed. When only studies that adjusted for smoking habit were selected, the risk for lung cancer increased by up to 34% ( n = 9; 95% CI 1.10–1.64). Our data, which show a strong association between benzene exposure and lung cancer risk, may have important public health implications. However, further studies are needed to identify the lung cancer risk associated with benzene exposure considering different smoking conditions.

Suggested Citation

  • Manuela Chiavarini & Patrizia Rosignoli & Beatrice Sorbara & Irene Giacchetta & Roberto Fabiani, 2024. "Benzene Exposure and Lung Cancer Risk: A Systematic Review and Meta-Analysis of Human Studies," IJERPH, MDPI, vol. 21(2), pages 1-19, February.
    • Handle: RePEc:gam:jijerp:v:21:y:2024:i:2:p:205-:d:1336762
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    References listed on IDEAS

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    1. Paolo Collarile & Ettore Bidoli & Fabio Barbone & Loris Zanier & Stefania Del Zotto & Simonetta Fuser & Fulvio Stel & Chiara Panato & Irene Gallai & Diego Serraino, 2017. "Residence in Proximity of a Coal-Oil-Fired Thermal Power Plant and Risk of Lung and Bladder Cancer in North-Eastern Italy. A Population-Based Study: 1995–2009," IJERPH, MDPI, vol. 14(8), pages 1-11, July.
    2. Diana Poli & Paola Mozzoni & Silvana Pinelli & Delia Cavallo & Bruno Papaleo & Lidia Caporossi, 2022. "Sex Difference and Benzene Exposure: Does It Matter?," IJERPH, MDPI, vol. 19(4), pages 1-17, February.
    3. Hong-Bae Kim & Jae-Yong Shim & Byoungjin Park & Yong-Jae Lee, 2018. "Long-Term Exposure to Air Pollutants and Cancer Mortality: A Meta-Analysis of Cohort Studies," IJERPH, MDPI, vol. 15(11), pages 1-15, November.
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    1. Ye Huang & Yangmin Chen & Qingqing Wu & Peili Shi & Bin Yang & Yunfeng Xie, 2024. "Evaluation of BTEX Pollution and Health Risk for Sustainable Use of a Typical Chemical Pesticide Industrial Site," Sustainability, MDPI, vol. 16(15), pages 1-14, July.

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