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Tumour Biol. 2014 Jan;35(1):171-7. doi: 10.1007/s13277-013-1021-7. Epub 2013 Jul 28.

The CCND1 G870A polymorphism and susceptibility to bladder cancer.

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Department of Urology, Tianjin Key Lab of Urology, Second Affiliated Hospital of Tianjin Medical University, Tianjin, China.


Published studies on the association between cyclin D1 (CCND1) G870A polymorphism and bladder cancer risk have yielded conflicting results. Thus, a systemic review and meta-analysis of published studies were performed to assess the possible association. All eligible studies of G870A polymorphism and bladder cancer risk were collected from the PubMed and the Cochrane Library. Statistical analyses were performed by Review Manager 5.0 and Stata 11.0. Significant association between G870A polymorphism and bladder cancer susceptibility was found under recessive model in overall population (OR = 1.21, 95% CI 1.01-1.45, P = 0.04). When stratifying for the race, our analysis suggested that CCND1 G870A was associated with bladder cancer risk in Asians when using homogeneous codominant (OR = 1.72, 95% CI 1.34-2.20, P < 0.0001), recessive (OR = 1.46, 95% CI 1.21-1.77, P < 0.0001), dominant (OR = 1.36, 95% CI 1.10-1.69, P = 0.004), and allelic models (OR = 1.30, 95% CI 1.15-1.47, P < 0.0001) to analyze the data. However, no significant associations were found in Caucasians. After stratifying the studies by control source, G870A polymorphism was significantly associated with bladder cancer risk under recessive model (OR = 1.31, 95% CI 1.03-1.67, P = 0.03) in hospital-based case-control studies, but not in population-based case-control studies. This meta-analysis suggested that G870A polymorphism most likely contributes to increased susceptibility to bladder cancer in the overall population, hospital-based case-control studies, and Asians.

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