title: TP53 Arg72Pro polymorphism and lung cancer risk: a meta-analysis.
abstract: No clear consensus has been reached on the TP53 Arg72Pro polymorphism (G12139C) and lung cancer risk. Thus, a meta-analysis was conducted to summarize the possible association. There was no statistical association between 12139C (Pro allele) and lung cancer risk in Caucasians compared with 12139G allele. However, the association was observed in all subjects (9,387 patients and 9,922 controls, p=0.04, OR=1.08, 95% CI 1.00-1.17), as well as in Asians (p=0.0004, OR=1.14, 95% CI 1.06-1.22). The association was also found in Asians under recessive genetic model (p<0.00001, OR=1.37, 95% CI 1.20-1.57) and homozygote comparison (CC vs. GG) (p<0.0001, OR=1.34, 95% CI 1.16-1.56). 12139C allele might increase the lung adenocarcinoma risk compared with 12139G allele (p=0.01, OR=1.11, 95% CI 1.02-1.21), and the effect was also found under recessive genetic model (p=0.003, OR=1.28, 95% CI 1.09-1.50) and homozygote comparison (CC vs. GG) (p=0.007, OR=1.28, 95% CI 1.07-1.52). There was an elevated association between the 12139C and the stage I lung cancer under dominant genetic model (p=0.04, OR=1.48, 95% CI 1.02-2.16), but no association was observed in other stages. No association of smoking was found between 12139C allele and lung cancer under recessive genetic model. Our result indicated that 12139C might increase the risk of lung cancer under recessive genetic model in adenocarcinoma, in Asians, and in lung cancer stage I. More studies stratified for lung cancer stage-genotyping interaction should be performed to clarify the role of TP53 Arg72Pro polymorphism in the development of lung cancer.
authors.affiliation: State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Department of Respiratory Disease, Shanghai Chest Hospital, Shanghai 200433, China.
authors.forename: Lili
authors.initials: L
authors.lastname: Yan
authors.forename: Deqiang
authors.initials: D
authors.lastname: Zhang
authors.forename: Chengwen
authors.initials: C
authors.lastname: Chen
authors.forename: Yumin
authors.initials: Y
authors.lastname: Mao
authors.forename: Yi
authors.initials: Y
authors.lastname: Xie
authors.forename: Yao
authors.initials: Y
authors.lastname: Li
authors.forename: Yan
authors.initials: Y
authors.lastname: Huang
authors.forename: Baohui
authors.initials: B
authors.lastname: Han
mesh_terms: D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology / Q000208:ethnology / Q000235:genetics*; D011110:Polymorphism, Genetic / Q000235:genetics*; D012907:Smoking / Q000235:genetics; D016159:Tumor Suppressor Protein p53 / Q000235:genetics*
chemical_list: C495901:TP53 protein, human; D016159:Tumor Suppressor Protein p53