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  • Title: Single nucleotide polymorphisms of PIN1 promoter region and cancer risk: evidence from a meta-analysis.
    Author: Peng JJ, Wei D, Li D, Fu ZQ, Tan Y, Xu T, Zhou JJ, Zhang T.
    Journal: PLoS One; 2013; 8(8):e70990. PubMed ID: 23976970.
    Abstract:
    BACKGROUND: Peptidylprolyl cis/trans isomerase NIMA-interacting 1 (PIN1) is involved in the process of tumorigenesis. The two single nucleotide polymorphisms (-677T>C, -842G>C) in the PIN1 promoter region have been suspected of being associated with cancer risk for years, but the conclusion is still inconclusive. METHODS: Eligible case-control studies were retrieved by searching databases and references of related reviews and studies. Genotype distribution data, adjusted odds ratios (ORs) and 95% confidence (CIs) intervals were extracted to calculate pooled ORs. RESULTS: A total of 4619 cancer cases and 4661 controls were included in this meta-analysis. Overall, the PIN1 -667T>C polymorphism was not associated with cancer risk, while the -842C allele was significantly associated with reduced cancer risk (CC+GC vs. GG, OR = 0.725, 95% CI: 0.607-0.865; P(heterogeneity) = 0.012 and GC vs. GG: OR = 0.721, 95% CI: 0.591-0.880; P(heterogeneity) = 0.003). Results from genotype distribution data were in agreement with those calculated with adjusted ORs and 95% CIs. No publication bias was detected. CONCLUSIONS: Results of this meta-analysis suggest that the PIN1 -842G>C polymorphism is associated with decreased cancer risk, but that the -667T>C polymorphism is not.
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