title: Modification of association between prior lung disease and lung cancer by inhaled arsenic: A prospective occupational-based cohort study in Yunnan, China.
abstract: Arsenic and prior lung diseases have been shown to increase lung cancer risk; however, little is known about their joint effects. The aim of our study was to analyze the joint effects of inhaled arsenic and prior lung diseases on lung cancer risk within a occupational cohort. The interactions of prior lung diseases and inhaled arsenic were analyzed based on multiplicative and additive scales in the Cox proportional hazards model. Compared with low arsenic exposure and no history of asthma, the hazard ratios (HRs) of high arsenic exposure with asthma, high arsenic exposure without asthma and low arsenic exposure with asthma were 2.61 (95% CI: 1.71-4.00), 2.60 (95% CI: 1.93-3.51) and 2.49 (95% CI: 1.53-4.06), respectively. Based on the multiplicative scale in the Cox proportional hazards model, the HR of the interaction of asthma and arsenic on lung cancer risk was 0.45 (95% CI: 0.25-0.80). Based on the additive scale, the relative excess risk due to interaction between asthma and arsenic was -1.41 (95% CI: -2.81 to -0.02). Our study provides strong evidence that arsenic exposure is associated with lung cancer risk. A significant negative interaction between asthma and arsenic on lung cancer risk is observed.
authors.affiliation: Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, PR China.
authors.forename: Yaguang
authors.initials: Y
authors.lastname: Fan
authors.affiliation: Department of Cancer Epidemiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 10021, PR China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Jiang
authors.affiliation: Divisions of Cancer Prevention, National Cancer Institute, NIH, Bethesda, Maryland, USA.
authors.forename: Ping
authors.initials: P
authors.lastname: Hu
authors.affiliation: Third People's Hospital of Honghe Autonomous District, Yunnan, PR China.
authors.forename: Runsheng
authors.initials: R
authors.lastname: Chang
authors.affiliation: Kunming Medical University, Yunnan, PR China.
authors.forename: Shuxiang
authors.initials: S
authors.lastname: Yao
authors.affiliation: Third People's Hospital of Honghe Autonomous District, Yunnan, PR China.
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
authors.affiliation: Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, PR China.
authors.forename: Xuebing
authors.initials: X
authors.lastname: Li
authors.affiliation: Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, PR China.|Lung cancer Center, West China Hospital, Sichuan University, Chengdu, PR China.
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Zhou
authors.affiliation: Department of Cancer Epidemiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 10021, PR China.
authors.forename: Youlin
authors.initials: Y
authors.lastname: Qiao
mesh_terms: D000328:Adult; D000368:Aged; D001151:Arsenic / Q000009:adverse effects* / Q000032:analysis; D001249:Asthma / Q000139:chemically induced / Q000453:epidemiology; D002681:China / Q000453:epidemiology; D004784:Environmental Monitoring; D005260:Female; D006801:Humans; D019570:Inhalation Exposure / Q000009:adverse effects; D008171:Lung Diseases / Q000139:chemically induced* / Q000453:epidemiology*; D008175:Lung Neoplasms / Q000139:chemically induced / Q000453:epidemiology / Q000401:mortality; D008297:Male; D008875:Middle Aged; D008906:Mining; D009784:Occupational Diseases / Q000139:chemically induced* / Q000453:epidemiology*; D016273:Occupational Exposure / Q000009:adverse effects*; D016016:Proportional Hazards Models; D011446:Prospective Studies; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology
chemical_list: D001151:Arsenic