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. 2021 Feb:147:105975.
doi: 10.1016/j.envint.2020.105975. Epub 2020 Dec 29.

Sub-multiplicative interaction between polygenic risk score and household coal use in relation to lung adenocarcinoma among never-smoking women in Asia

Batel Blechter  1 Jason Y Y Wong  2 Chao Agnes Hsiung  3 H Dean Hosgood  4 Zhihua Yin  5 Xiao-Ou Shu  6 Han Zhang  2 Jianxin Shi  2 Lei Song  2 Minsun Song  7 Wei Zheng  6 Zhaoming Wang  8 Neil Caporaso  2 Laurie Burdette  9 Meredith Yeager  10 Sonja I Berndt  2 Maria Teresa Landi  2 Chien-Jen Chen  11 Gee-Chen Chang  12 Chin-Fu Hsiao  3 Ying-Huang Tsai  13 Kuan-Yu Chen  14 Ming-Shyan Huang  15 Wu-Chou Su  16 Yuh-Min Chen  17 Li-Hsin Chien  3 Chung-Hsing Chen  18 Tsung-Ying Yang  19 Chih-Liang Wang  20 Jen-Yu Hung  21 Chien-Chung Lin  16 Reury-Perng Perng  22 Chih-Yi Chen  23 Kun-Chieh Chen  19 Yao-Jen Li  11 Chong-Jen Yu  14 Yi-Song Chen  3 Ying-Hsiang Chen  3 Fang-Yu Tsai  18 Wei Jie Seow  24 Bryan A Bassig  2 Wei Hu  2 Bu-Tian Ji  2 Wei Wu  5 Peng Guan  5 Qincheng He  5 Yu-Tang Gao  25 Qiuyin Cai  6 Wong-Ho Chow  26 Yong-Bing Xiang  25 Dongxin Lin  27 Chen Wu  27 Yi-Long Wu  28 Min-Ho Shin  29 Yun-Chul Hong  30 Keitaro Matsuo  31 Kexin Chen  32 Maria Pik Wong  33 Daru Lu  34 Li Jin  34 Jiu-Cun Wang  34 Adeline Seow  35 Tangchun Wu  36 Hongbing Shen  37 Joseph F Fraumeni  2 Pan-Chyr Yang  14 I-Shou Chang  18 Baosen Zhou  5 Stephen J Chanock  2 Nathaniel Rothman  2 Nilanjan Chatterjee  38 Qing Lan  2
Affiliations

Sub-multiplicative interaction between polygenic risk score and household coal use in relation to lung adenocarcinoma among never-smoking women in Asia

Batel Blechter et al. Environ Int. 2021 Feb.

Abstract

We previously identified 10 lung adenocarcinoma susceptibility loci in a genome-wide association study (GWAS) conducted in the Female Lung Cancer Consortium in Asia (FLCCA), the largest genomic study of lung cancer among never-smoking women to date. Furthermore, household coal use for cooking and heating has been linked to lung cancer in Asia, especially in Xuanwei, China. We investigated the potential interaction between genetic susceptibility and coal use in FLCCA. We analyzed GWAS-data from Taiwan, Shanghai, and Shenyang (1472 cases; 1497 controls), as well as a separate study conducted in Xuanwei (152 cases; 522 controls) for additional analyses. We summarized genetic susceptibility using a polygenic risk score (PRS), which was the weighted sum of the risk-alleles from the 10 previously identified loci. We estimated associations between a PRS, coal use (ever/never), and lung adenocarcinoma with multivariable logistic regression models, and evaluated potential gene-environment interactions using likelihood ratio tests. There was a strong association between continuous PRS and lung adenocarcinoma among never coal users (Odds Ratio (OR) = 1.69 (95% Confidence Interval (CI) = 1.53, 1.87), p=1 × 10-26). This effect was attenuated among ever coal users (OR = 1.24 (95% CI: 1.03, 1.50), p = 0.02, p-interaction = 6 × 10-3). We observed similar attenuation among coal users from Xuanwei. Our study provides evidence that genetic susceptibility to lung adenocarcinoma among never-smoking Asian women is weaker among coal users. These results suggest that lung cancer pathogenesis may differ, at least partially, depending on exposure to coal combustion products. Notably, these novel findings are among the few instances of sub-multiplicative gene-environment interactions in the cancer literature.

Keywords: Gene-environment interaction; Household coal use; Lung adenocarcinoma; Never-smoking women in Asia; Polygenic risk score.

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Conflict of interest statement

Conflict of interest

The authors declare no competing interest.

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