Abstract
Objectives
DNA repair genes play an important role in protection against environmental and endogenous DNA damage, and constitute the first line of defense against cancer. Xeroderma pigmentosum complementation group C (XPC) is involved in the damage recognition step during nucleotide excision repair. The relationship between XPC intron11 C/A polymorphism and cancer risk has not been widely studied. Hence, this study evaluated the relationship between the XPC intron11 C/A polymorphism and prostate cancer risk.
Materials and methods
This hospital-based cohort consisted of 152 patients with prostate cancer and 142 male controls. The XPC intron11 C/A genotype was determined using the PCR–RFLP method. Medical, occupational, and cigarette-smoking history was obtained from each participant using questionnaires.
Results
Logistic regression analysis revealed that compared to controls, the frequencies of the A/A and C/A genotypes were significantly higher than those of the C/C genotype in cancer patients (OR = 2.03, 95 % confidence interval (CI) 1.03–3.98 and OR = 1.91, 95 % CI 1.13–3.24, respectively). We also found that the frequency of the A/A genotype was significantly higher in cancer cases than in controls among non-smokers (OR = 7.7, 95 % CI 1.38–42.88, compared to the C/C genotype).
Conclusion
We found that the XPC intron11 C/A polymorphism was associated with an increased risk of prostate cancer. Among non-smokers, the A/A genotype was significantly more prevalent in prostate cancer patients than in controls.
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Acknowledgments
This work was supported by the Faculty of Medicine, University of Miyazaki and the University of Occupational and Environmental Health. We are especially grateful to the staff of these facilities. [23].
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Yoshino, Y., Takeuchi, S., Katoh, T. et al. XPC intron11 C/A polymorphism as a risk factor for prostate cancer. Environ Health Prev Med 21, 100–104 (2016). https://doi.org/10.1007/s12199-015-0505-z
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DOI: https://doi.org/10.1007/s12199-015-0505-z