- Volume 16 Issue 16
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Association between the CYP1A2 rs762551 Polymorphism and Bladder Cancer Susceptibility: a Meta-Analysis Based on Case-Control Studies
- Zeng, Yong (Department of Cardiothoracic Surgery, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University) ;
- Jiang, Hua-Yong (Department of Radiation Oncology, Beijing Military General Hospital) ;
- Wei, Li (Department of Oncology, the 401 hospital of PLA) ;
- Xu, Wei-Dong (Department of Radiation Oncology, Beijing Military General Hospital) ;
- Wang, Ya-Jie (Department of Oncology, Changhai Hospital, Second Military Medical University) ;
- Wang, Ya-Di (Department of Radiation Oncology, Beijing Military General Hospital) ;
- Liu, Chuan (Department of Oncology, Changhai Hospital, Second Military Medical University)
- Published : 2015.11.04
Background: Previous studies evaluated associations between the CYP1A2 rs762551 polymorphism and bladder cancer risk. However, the results were inconsistent. We therefore performed a meta-analysis of the published case-control studies to assess in detail the association between CYP1A2 rs762551 polymorphism and bladder cancer risk. Materials and Methods: PubMed, Embase and Web of Science were searched to identify relevant studies and the pooled odds ratio (OR) and 95 % confidence interval (95%CI) were calculated. Results: A total of seven articles including 3,013 cases and 2,771 controls were finally included. Overall, a significant association was found between the CYP1A2 rs762551 polymorphism and bladder cancer susceptibility for CC vs AA (OR=0.82, 95% CI=0.69~0.99), but no significant associations were found for the other three models (AC vs AA: OR=0.91, 95% CI=0.81~1.02; the dominant model: OR=0.90, 95% CI=0.80~1.00; the recessive model: OR=0.84, 95% CI =0.72~1.00). In the subgroup analysis by ethnicity, we detected significant associations between the CYP1A2 rs762551 polymorphism and bladder cancer susceptibility for GA vs GG (OR = 0.78, 95% CI =0.64~0.96) and for the recessive model (OR=0.80, 95% CI=0.66~0.96) in Caucasians, but not for Asians. Conclusions: The results from the meta-analysis suggested that the CYP1A2 rs762551 polymorphism is a protective factor for bladder cancer, especially in Caucasians.
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