title: Association between polymorphisms of TP53 and MDM2 and prostate cancer risk in southern Chinese.
abstract: Alterations in the TP53 and MDM2 genes appear to be important in the development of many human tumors, but evidence is conflicting on associations between polymorphisms in these genes and risk of prostate cancer (PCa). The influence of TP53 codon 72, MDM2 SNP309, and MDM2 C1797G polymorphisms in southern Chinese PCa patients was investigated. In the comparison of genotype distributions of TP53 codon 72 between cases and controls, the adjusted odds ratios for PCa associated with the Pro/Pro, Arg/Pro, and Arg/Arg genotypes were 1.00, 1.89 (95% CI = 1.20-2.97), and 2.01 (95% CI = 1.11-3.64), respectively; however, MDM2 SNP309 and C1797G did not show any significant difference between cases and controls. When TP53 and MDM2 polymorphisms were combined based on the numbers of variant risk alleles (i.e., G-allele of TP53 codon 72, G-allele of MDM2 SNP309, and G-allele of MDM2 C1797G), individuals with 3-5 variants had a 1.56-fold greater risk of PCa than those with 0-2 variants (95% CI = 1.07-2.26). Moreover, subjects with 0-2 variants had 33.3% positive p53 expression, whereas subjects with 3-5 variants had 23.3% p53 expression (P = 0.39). These findings suggest that TP53 and MDM2 polymorphisms play a role in PCa susceptibility in southern Chinese Han population.
authors.affiliation: Department of Urology, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China; Department of Molecular and Genetic Toxicology, Cancer Center of Nanjing Medical University, 140 Hanzhong Road, Nanjing 210029, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Xu
authors.forename: Zheng
authors.initials: Z
authors.lastname: Xu
authors.forename: Gong
authors.initials: G
authors.lastname: Cheng
authors.forename: Zhi-Chao
authors.initials: ZC
authors.lastname: Min
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Mi
authors.forename: Zhi-zhong
authors.initials: ZZ
authors.lastname: Zhang
authors.forename: Jun
authors.initials: J
authors.lastname: Tao
authors.forename: Peng-Chao
authors.initials: PC
authors.lastname: Li
authors.forename: Mei-Lin
authors.initials: ML
authors.lastname: Wang
authors.forename: Jia-Lin
authors.initials: JL
authors.lastname: Tang
authors.forename: Zheng-Dong
authors.initials: ZD
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Hong-Fei
authors.initials: HF
authors.lastname: Wu
authors.forename: Ning-Han
authors.initials: NH
authors.lastname: Feng
authors.forename: Li-Xin
authors.initials: LX
authors.lastname: Hua
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People / Q000235:genetics*; D016022:Case-Control Studies; D002681:China; D003062:Codon / Q000235:genetics; D003710:Demography; D005006:Ethnicity / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D011471:Prostatic Neoplasms / Q000235:genetics*; D051736:Proto-Oncogene Proteins c-mdm2 / Q000235:genetics*; D013194:Staining and Labeling; D016159:Tumor Suppressor Protein p53 / Q000235:genetics*
chemical_list: D003062:Codon; D016159:Tumor Suppressor Protein p53; C497206:MDM2 protein, human; D051736:Proto-Oncogene Proteins c-mdm2