Association between polymorphisms of TP53 and MDM2 and prostate cancer risk in southern Chinese.
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.
Xu
Bin
B
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.
Xu
Zheng
Z
Cheng
Gong
G
Min
Zhi-Chao
ZC
Mi
Yuanyuan
Y
Zhang
Zhi-zhong
ZZ
Tao
Jun
J
Li
Peng-Chao
PC
Wang
Mei-Lin
ML
Tang
Jia-Lin
JL
Zhang
Zheng-Dong
ZD
Zhang
Wei
W
Wu
Hong-Fei
HF
Feng
Ning-Han
NH
Hua
Li-Xin
LX
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*
D003062:Codon; D016159:Tumor Suppressor Protein p53; C497206:MDM2 protein, human; D051736:Proto-Oncogene Proteins c-mdm2