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  • Title: VEGF Gene Polymorphisms are Associated with Risk of Tetralogy of Fallot.
    Author: Li X, Liu CL, Li XX, Li QC, Ma LM, Liu GL.
    Journal: Med Sci Monit; 2015 Nov 12; 21():3474-82. PubMed ID: 26558525.
    Abstract:
    BACKGROUND: The aim of this study was to investigate associations of 3 common polymorphisms in the VEGF gene, -2578C>A, -634C>G, and 936C>T, with risk of tetralogy of Fallot (TOF) in Chinese Han children. MATERIAL AND METHODS: From January 2010 to June 2013, a total of 400 pediatric subjects were recruited, including 160 cases with TOF (TOF group) and 240 healthy controls (control group). The genotypes of 3 common VEGF polymorphisms, -2578C>A, -634C>G, and 936C>T, were analyzed by polymerase chain reaction restriction fragment length polymorphism. All data were analyzed with SPSS 18.0 software. RESULTS: No significant differences were observed in body mass index or sex between TOF patients and controls (both P>0.05), but significant differences in age and family history of TOF were observed between the 2 groups (both P<0.05). The AA genotype in -2578C>A of VEGF was correlated with a significantly increased risk of TOF, and TOF risk in A allele carrier was 1.54-fold higher than that of C allele carrier (OR=1.54, 95%CI=1.14-2.09, P=0.005); the statistical significance was still present after Bonferroni correction (Pc=0.045). GG genotype in -634C>G of VEGF gene was also associated with an increased risk of TOF, and TOF risk in patients with G allele was 1.62-fold higher compared to patients with C allele (OR=1.62, 95%CI=1.19-2.21, P=0.002); the statistical significance was still present after Bonferroni correction (Pc=0.018). Interestingly, T allele in VEGF 936C>T polymorphism is associated with a decreased TOF risk (OR=0.65, 95%CI=0.49-0.87, P=0.003, the statistical significance was still present after Bonferroni correction (Pc=0.027). The result of logistic regression analysis revealed that -2578C>A, -634C>G, and 936C>T genotypes are independently related to the prevalence of TOF (all P<0.05). CONCLUSIONS: Our results confirmed that VEGF genetic polymorphisms, -2578C>A and -634C>G, may be associated with an increased TOF risk, while 936C>T polymorphism may be associated with decreased TOF risk.
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