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  • Title: Association between the EGF rs4444903 polymorphism and liver cancer susceptibility: a meta-analysis and meta-regression.
    Author: Li YL, Tian Z, Zhao L, Zhang CL.
    Journal: Genet Mol Res; 2014 Oct 07; 13(4):8066-79. PubMed ID: 25299191.
    Abstract:
    Emerging evidence suggests that a common functional polymorphism, rs4444903 (A>G), in the EGF gene might impact an individual's susceptibility to liver cancer; however, individually published results are inconclusive. This meta-analysis aimed to derive a more precise estimation of the relationship between the EGF rs4444903 polymorphism and liver cancer risk. A literature search was conducted in the PubMed, Embase, Web of Science, and CBM databases from inception through May 1st, 2013. Seven case-control studies were included with a total of 1408 liver cancer cases and 1343 healthy controls. Crude odds ratios (ORs) with 95% confidence intervals (CIs) were calculated. Our meta-analysis results indicated that the G variant of the rs4444903 polymorphism might be associated with an increased risk of liver cancer (G allele vs A allele: OR = 1.25, 95%CI = 1.01-1.56, P = 0.040; GG + AG vs AA: OR = 1.65, 95%CI = 1.27-2.15, P < 0.001; GG vs AA: OR = 1.77, 95%CI = 1.34-2.35, P < 0.001). Further subgroup analysis by ethnicity also showed significant associations between the G variant of the rs4444903 polymorphism and an increased risk of liver cancer among Asian, Caucasian, and African populations. No publication bias was detected in this meta-analysis. In conclusion, the current meta-analysis suggests that the G variant of the rs4444903 polymorphism may increase the risk of liver cancer. The EGF rs4444903 (A>G) polymorphism can be useful as a biomarker in predicting the development of liver cancer.
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