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  • Title: The IL-6 rs1800795 and rs1800796 polymorphisms are associated with coronary artery disease risk.
    Author: Lu S, Wang Y, Wang Y, Hu J, Di W, Liu S, Zeng X, Yu G, Wang Y, Wang Z.
    Journal: J Cell Mol Med; 2020 Jun; 24(11):6191-6207. PubMed ID: 32374489.
    Abstract:
    Studies examining the associations between the interleukin-6 (IL-6) rs1800795 and rs1800796 gene polymorphisms and risk of coronary artery disease (CAD) remain controversial. Our aim was to evaluate the accurately determine role of these two polymorphisms in CAD risk. PubMed, Embase, VIP, Wan fang and China National Knowledge Infrastructure databases were searched. The odds ratios (ORs) and 95% confidence intervals (CIs) were calculated. The trial sequential analysis (TSA) was conducted, and bioinformatics tools were employed. A total of thirty-seven articles were obtained. For the IL-6 rs1800795 polymorphism, 9411 CAD patients and 3161 controls were included, 4720 patients with CAD, and 5000 controls were included for the IL-6 rs1800796 polymorphism. In the pooled analysis, significant associations were only observed for the rs1800796 polymorphism (allelic: OR [95%CI] = 1.28 [1.13, 1.44], dominant: OR [95%CI] = 1.35 [1.17, 1.57], recessive: OR [95%CI] = 1.35 [1.18, 1.55], heterozygote: OR [95%CI] = 1.26 [1.15, 1.37], homozygote: OR [95%CI] = 1.62 [1.23, 2.13]). Significant associations were detected in the Asian and Mongoloid populations and 'more than 500' subgroup for the rs1800795 polymorphism. TSA confirmed the true-positive results for the rs1800796 polymorphism. The bioinformatics analysis showed that the two polymorphisms played important roles in the gene transcription. The IL-6 rs1800796 polymorphism is associated with an increased susceptibility to CAD and is a risk factor for CAD. The IL-6 rs1800795 polymorphism is associated with an increased risk of CAD in Asians, particularly in Chinese, and a decreased risk of CAD in an African population is remarkably observed.
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