title: Quantitative assessment of the association between CYP1A1 A4889G polymorphism and endometrial cancer risk.
abstract: Cytochrome P450 1A1 (CYP1A1) A4889G polymorphism was supposed to be associated with endometrial cancer risk, but previous studies reported conflicting results. We therefore performed a meta-analysis of all relevant studies to get a comprehensive assessment of the association between CYP1A1 A4889G polymorphism and endometrial cancer risk. The pooled odds ratios (OR) with the corresponding 95% confidence interval (95% CI) was calculated to assess the association. Finally, ten studies with a total of 1,682 endometrial cancer cases and 2,510 controls were finally included into the meta-analysis. Meta-analysis of the total ten studies showed that CYP1A1 A4889G polymorphism was not associated with endometrial cancer risk (ORG versus A = 1.14, 95% CI 0.83-1.57, P OR = 0.417; ORGG versus AA = 1.23, 95% CI 0.70-2.18, P OR = 0.470; ORGG versus AA/AG = 1.03, 95% CI 0.59-1.81, P OR = 0.919; ORGG/AG versus AA = 1.22, 95% CI 0.82-1.81, P OR = 0.336). Subgroup analyses by ethnicity further showed that there was also no obvious association between CYP1A1 A4889G polymorphism and endometrial cancer risk in both Caucasians and Asians. Sensitivity analysis by excluding single study in turns showed that the pooled estimations were not stable. Therefore, evidence for currently available data suggests that CYP1A1 A4889G polymorphism is not associated with endometrial cancer risk. However, more studies with large number of participants are needed to further assess the association precisely.
authors.affiliation: Department of Gynaecology and Obstetrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.forename: Yuan-Yue
authors.initials: YY
authors.lastname: Li
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Xin
authors.forename: Ying
authors.initials: Y
authors.lastname: Han
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Wu
authors.forename: Hong-Bo
authors.initials: HB
authors.lastname: Wang
mesh_terms: D044466:Asian People / Q000235:genetics; D019363:Cytochrome P-450 CYP1A1 / Q000235:genetics*; D016889:Endometrial Neoplasms / Q000208:ethnology / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease / Q000208:ethnology / Q000235:genetics*; D005838:Genotype; D006801:Humans; D016017:Odds Ratio; D020641:Polymorphism, Single Nucleotide; D044465:White People / Q000235:genetics
chemical_list: D019363:Cytochrome P-450 CYP1A1