IL-6 gene promoter polymorphisms and risk of coronary artery disease in a Chinese population
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Updated: Apr 22, 2026

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
Published on: June 21, 2018
1Department of Cardiovasology, The First Hospital of Jilin University, Changchun, China.
Abstract:
We investigated the relationships between single nucleotide polymorphisms (SNPs) of the interleukin (IL)-6 gene 174 G>C (rs1800795), 572 G>C (rs1800796), and 597 G/A (rs1800797) and coronary artery disease (CAD) risk in a Chinese population. This case-control study recruited 296 CAD patients and 327 controls between January 2009 and May 2012. Genotyping of IL-6 174 G>C (rs1800795), 572 G>C (rs1800796), and 597 G/A (rs1800797) was performed on a 384-well plate format using the Sequenom MassARRAY platform. CAD patients were more likely to be older and male, with a higher body mass index, diabetes, and hypertension, and presented higher triglycerides, and lower total cholesterol, low-density lipoprotein-cholesterol, and high-density lipoprotein-cholesterol. We found that the IL-6 174CC genotype was associated with a significantly increased risk of CAD compared to the wild-type GG genotype in a codominant model [odds ratio (95% confidence interval) = 1.94 (1.13-3.37)], whereas IL-6 174 G>C polymorphisms presented an increased risk of CAD in dominant and recessive models. However, we did not find that the IL-6 572 CC and 597 AA genotypes were correlated with an increased risk of CAD. IL-6 174 G>C rs1800795 was associated with CAD risk in a Chinese population. Further large-scale studies are required to determine whether IL-6 SNPs interact with environmental factors in the development of CAD.
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