Abstract
The association between CYP17A1 T-34C polymorphism and endometrial cancer risk has been inconsistent and underpowered. To clarify the effect of CYP17A1 T-34C polymorphism on the risk of endometrial cancer, a meta-analysis of all available studies relating CYP17A1 T-34C polymorphism to the risk of endometrial cancer was conducted. The authors searched PubMed, EMBASE, Scopus, and VisionCite databases updated on March 2013. Data were extracted by two independent authors and pooled odds ratio (OR) with 95 % confidence interval (CI) was calculated. Finally, seven studies with 1,570 endometrial cancer cases and 2,474 controls were included in the meta-analysis. There was no statistically significant association between CYP17A1 T-34C polymorphism and endometrial cancer under heterogeneous codominant model (OR = 0.91, 95 %CI = 0.68-1.21). Although CYP17A1 T-34C polymorphism was marginally associated with endometrial cancer risk under homogeneous codominant model (OR = 0.69, 95 %CI = 0.49-0.99), the significant association was not stable after sensitivity analysis. We concluded that CYP17A1 T-34C polymorphism might not be one risk factor in the carcinogenesis of endometrial cancer. Further large and well-designed studies are needed to confirm this association.
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