title: No significant association between the TP53 codon 72 polymorphism and breast cancer risk: a meta-analysis of 21 studies involving 24,063 subjects.
abstract: Conflicting data have been published as to the possible association between polymorphism in codon 72 of the TP53 tumor suppressor gene and the risk of developing breast cancer. In order to address this question, we carried out a meta-analysis of 21 studies of and this polymorphism and breast cancer risk, which collectively included 12,601 cases and 11,462 controls. Studies were identified by searching the Medline, PubMed, Embase, and ISI Web of Knowledge databases. The strength of association between the TP53 codon 72 polymorphism and breast cancer risk was assessed by calculating crude OR values with 95% CIs, with pooled OR values calculated separately for three genetic inheritance models. We found no significant association between TP53 codon 72 polymorphism and breast cancer risk for either the codominant inheritance model (Pro/Arg vs. Pro/Pro: OR = 1.063, 95% CI = 0.967-1.169; Arg/Arg vs. Pro/Pro: OR = 1.245, 95% CI = 0.997-1.554), the dominant model (OR = 1.146, 95% CI = 0.979-1.340), or the recessive model (OR = 1.179, 95% CI = 1.020-1.362). Stratified analysis by ethnicity and source of controls similarly revealed no significant association for any of the genetic models. In summary, this meta-analysis provides strong evidence that the TP53 codon 72 polymorphism is not associated with the risk of developing breast cancer.
authors.affiliation: Evidence-Based Medicine Group, Department of Surgery, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China.
authors.forename: Yanlei
authors.initials: Y
authors.lastname: Ma
authors.forename: Jianjun
authors.initials: J
authors.lastname: Yang
authors.forename: Zhihua
authors.initials: Z
authors.lastname: Liu
authors.forename: Peng
authors.initials: P
authors.lastname: Zhang
authors.forename: Zhe
authors.initials: Z
authors.lastname: Yang
authors.forename: Yu
authors.initials: Y
authors.lastname: Wang
authors.forename: Huanlong
authors.initials: H
authors.lastname: Qin
mesh_terms: D001943:Breast Neoplasms / Q000208:ethnology / Q000235:genetics*; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D040941:Heredity; D006801:Humans; D016014:Linear Models; D016017:Odds Ratio; D010375:Pedigree; D011110:Polymorphism, Genetic; D018570:Risk Assessment; D012307:Risk Factors; D016159:Tumor Suppressor Protein p53 / Q000235:genetics*
chemical_list: C495901:TP53 protein, human; D016159:Tumor Suppressor Protein p53