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  • Title: Genetic variants of the cytochrome P450 and glutathione S-transferase associated with risk of bladder cancer in a south-eastern Chinese population.
    Author: Shao J, Gu M, Zhang Z, Xu Z, Hu Q, Qian L.
    Journal: Int J Urol; 2008 Mar; 15(3):216-21. PubMed ID: 18304215.
    Abstract:
    OBJECTIVE: To evaluate the association between genetic polymorphisms of CYP2E1 RsaI and GSTM1 and development of bladder cancer in a south-eastern Han Chinese population. METHODS: We hypothesized that the CYP2E1-1019T>A and GSTM1 polymorphisms were associated with risk of bladder cancer. In a hospital-based case-control study of 202 case patients with newly diagnosed bladder transitional cell carcinoma and 272 cancer-free controls frequency-matched by the age and sex, we genotyped these two polymorphisms using a polymerase chain reaction-restriction fragment length polymorphism method. RESULTS: We found that the GSTM1 null genotype was associated with an increased risk of bladder cancer (adjusted odds ratio [OR] = 1.73, 95% confidence interval [CI] = 1.17-2.56) compared with those with the non-null genotype, but the CYP2E1-1019T>A polymorphisms did not show any association. In the stratification analysis of the GSTM1 polymorphism, we found that the increased risk was more pronounced among subgroups aged < or =60 years (OR = 2.02, 95% CI = 1.08-3.77), smokers (OR = 1.94, 95% CI = 1.11-3.38) and non-drinkers (OR = 3.86, 95% CI = 1.28-11.60). CONCLUSION: GSTM1 polymorphism (but not CYP2E1 RsaI polymorphism) appears to contribute to the etiology of bladder cancer in a south-eastern Chinese population.
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