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10. Genetic Variants in MUC4 Gene Are Associated with Lung Cancer Risk in a Chinese Population.

Author

Zhang, Zili, Wang, Jian, He, Jianxing, Zheng, Zeguang, Zeng, Xiansheng, Zhang, Chenting, Ye, Jinmei, Zhang, Yajie, Zhong, Nanshan, and Lu, Wenju

Subjects
*LUNG cancer risk factors, *MUCINS, *EPITHELIAL cells, *CELL proliferation, *CELL differentiation, *CASE-control method, *CANCER cells
Abstract

Mucin MUC4, which is encoded by the MUC4 gene, plays an important role in epithelial cell proliferation and differentiation. Aberrant MUC4 overexpression is associated with invasive tumor proliferation and poor outcome in epithelial cancers. Collectively, the existing evidence suggests that MUC4 has tumor-promoter functions. In this study, we performed a case-control study of 1,048 incident lung cancer cases and 1,048 age- and sex frequency-matched cancer-free controls in a Chinese population to investigate the role of MUC4 gene polymorphism in lung cancer etiology. We identified nine SNPs that were significantly associated with increased lung cancer risk (P = 0.0425 for rs863582, 0.0333 for rs842226, 0.0294 for rs842225, 0.0010 for rs2550236, 0.0149 for rs2688515, 0.0191 for rs 2641773, 0.0058 for rs3096337, 0.0077 for rs859769, and 0.0059 for rs842461 in an additive model). Consistent with these single-locus analysis results, the haplotype analyses revealed an adverse effect of the haplotype “GGC” of rs3096337, rs859769, and rs842461 on lung cancer. Both the haplotype and diplotype “CTGAGC” of rs863582, rs842226, rs2550236, rs842225, and rs2688515 had an adverse effect on lung cancer, which is also consistent with the single-locus analysis. Moreover, we observed statistically significant interactions for rs863582 and rs842461 in heavy smokers. Our results suggest that MUC4 gene polymorphisms and their interaction with smoking may contribute to lung cancer etiology. [ABSTRACT FROM AUTHOR]

Published
2013
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