The NQO1 rs1800566 Polymorphism and Risk of Bladder Cancer: Evidence from 6,169 Subjects

  • Guo, Zhan-Jing (Shijiazhuang Municipal Center for Disease Control and Prevention) ;
  • Feng, Chang-Long (Bethune Military Medical College of PLA)
  • Published : 2012.12.31


Objective: The NAD(P)H:quinone oxidoreductase 1 (NQO1) rs1800566 polymorphism, leading to proline-toserine amino-acid and enzyme activity changes, has been implicated in bladder cancer risk, but individually published studies showed inconsistent results. We therefore here conducted a meta-analysis to summarize the possible association. Methods: A systematic literature search up to August 27, 2012 was carried out in PubMed, EMBASE and Wanfang databases, and the references of retrieved articles were screened. Crude odds ratios (ORs) with 95% confidence intervals (CIs) were analyzed for homozygote contrast (TT vs. CC), additive model (T vs. C), dominant model (TT+CT vs. CC), and recessive model (TT vs. CC+CT) to assess the association using fixed- or random-effect models. Results: We identified 12 case-control studies including 3,041 cases and 3,128 controls for the present meta-analysis. Significant association between NQO1 rs1800566 genetic polymorphism and risk of bladder cancer was observed in the additive model (OR = 1.15, 95% CI = 1.01-1.30, p = 0.030). Moreover, in the subgroup analysis stratified by ethnicity, significant associations were observed in Asians (OR = 1.26, 95% CI = 1.08-1.47, p = 0.003 for T vs. C; OR = 1.68, 95% CI = 1.21-2.32, p = 0.002 for TT vs. CC; OR = 1.50, 95% CI = 1.13-1.98, p = 0.005 for TT vs. CT+CC) but not in Caucasians. Conclusions: The results suggest that NQO1 rs1800566 genetic polymorphism may contribute to bladder cancer development, especially in Asians.


NQO1;polymorphism;bladder cancer;meta-analysis


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