title: The association between TP53 Arg72Pro polymorphism and lung cancer susceptibility: evidence from 30,038 subjects.
abstract: BACKGROUND
  The TP53 codon 72 polymorphism has been associated with the individual susceptibility to lung cancer. However, the association remains uncertain and varies with ethnicity, smoking status, cancer histology, and stage.
  
  
  METHODS
  We performed a meta-analysis to evaluate the relationship between TP53 Arg72Pro polymorphism and lung cancer susceptibility basing on 15,647 lung cancer patients and 14,391 controls from 36 published literatures. We also performed stratified analysis in populations of different ethnicities, smoking statuses, lung cancer stages, and histological types.
  
  
  RESULTS
  The analysis showed a significantly increased lung cancer susceptibility among Pro allele carriers (P < 0.001, odds ratio (OR) = 1.14, 95% confidence interval (CI) = 1.1-1.19), especially for smokers (P < 0.001, OR = 1.29, 95% CI = 1.12-1.47). Stratified analysis indicated that Pro72 elevates lung cancer susceptibility in Asians, while it has no effect on lung cancer risk of Caucasians. Moreover, Pro carriers present an increased risk of developing squamous cell carcinoma and adenocarcinoma, instead of large cell carcinoma and small cell carcinoma. Interestingly, patients with the Pro allele seemed to be diagnosed with lung cancer at the early stages (stage I-II, P = 0.008, OR = 1.2, 95% CI = 1.05-1.37).
  
  
  CONCLUSIONS
  Our results suggest that the Pro allele acts as a risk factor for development of lung cancer, especially for smokers and Asians.
authors.affiliation: Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, 200032, People's Republic of China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Qiao
authors.forename: Weiguo
authors.initials: W
authors.lastname: Hu
mesh_terms: D016022:Case-Control Studies; D016009:Chi-Square Distribution; D055088:Early Detection of Cancer; D020022:Genetic Predisposition to Disease; D006801:Humans; D008175:Lung Neoplasms / Q000208:ethnology / Q000235:genetics* / Q000473:pathology; D009367:Neoplasm Staging; D016017:Odds Ratio; D010641:Phenotype; D011110:Polymorphism, Genetic; D044469:Racial Groups / Q000235:genetics; D018570:Risk Assessment; D012307:Risk Factors; D012907:Smoking / Q000208:ethnology; D016159:Tumor Suppressor Protein p53 / Q000235:genetics*
chemical_list: C495901:TP53 protein, human; D016159:Tumor Suppressor Protein p53