title: Polymorphisms of TP53 codon 72 with breast carcinoma risk: evidence from 12226 cases and 10782 controls.
abstract: BACKGROUND
  Previously, TP53 codon 72 polymorphisms have been implicated as risk factors for various cancers. A number of studies have conducted on the association of TP53 codon 72 polymorphisms with susceptibility to breast carcinoma and have yielded inconclusive results. The aim of the present study was to derive a more precise estimation of the relationship.
  
  
  METHODS
  We conducted a search in the Medline, EMBASE, OVID, Sciencedirect, and Chinese National Knowledge Infrastructure (CNKI) without a language limitation, covering all papers published up to Jan 2009. The associated literature was acquired through deliberate searching and selected based on the established inclusion criteria for publications.
  
  
  RESULTS
  A total of seventeen case-control studies, including 12226 cases and 10782 controls, met the included criteria and thus were selected. Ultimately, the relevant data were extracted and further analyzed using systematic meta-analyses. Overall, no associations of TP53 codon 72 polymorphisms with breast carcinoma were observed (for Arg/Arg vs Pro/Pro: OR = 1.20; 95%CI = 0.96-1.50; for dominant model: OR = 1.12; 95%CI = 0.96-1.32; for recessive model: OR = 1.13; 95%CI = 0.98-1.31). In the subgroup analysis by ethnicity, statistically similar results were obtained when the data were stratified as Asians, Caucasians and Africans.
  
  
  CONCLUSIONS
  Collectively, the results of the present study suggest that TP53 codon 72 polymorphisms might not be a low-penetrant risk factor for developing breast carcinoma.
authors.affiliation: Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing, PR China. zhuowenlei@yahoo.com.cn
authors.forename: Wenlei
authors.initials: W
authors.lastname: Zhuo
authors.forename: Yunsong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Zhaolan
authors.initials: Z
authors.lastname: Xiang
authors.forename: Lei
authors.initials: L
authors.lastname: Cai
authors.forename: Zhengtang
authors.initials: Z
authors.lastname: Chen
mesh_terms: D001943:Breast Neoplasms / Q000453:epidemiology / Q000235:genetics*; D002277:Carcinoma / Q000453:epidemiology / Q000235:genetics*; D016022:Case-Control Studies; D003062:Codon / Q000737:chemistry*; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D016239:MEDLINE; D011110:Polymorphism, Genetic; D012307:Risk Factors; D016159:Tumor Suppressor Protein p53 / Q000235:genetics*
chemical_list: D003062:Codon; C495901:TP53 protein, human; D016159:Tumor Suppressor Protein p53
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