Abstract

Interleukin-6 (IL-6) is an important proinflammatory cytokine that plays an important role in the pathogenesis of intracranial aneurysms (IAs). The aim of this study was to investigate the association between the IL-6-572G/C polymorphism and the risk of IAs in a Chinese population. The IL-6-572G/C gene polymorphisms in 220 IA cases and 220 controls were analyzed using the polymerase chain reaction-restriction fragment length polymorphism method. The IL-6-572GG (odds ratio [OR]=3.35, 95% confidence intervals [CIs]=1.65, 6.82; p=0.001) and G allele frequencies (OR=1.48, 95% CIs=1.09, 2.00; p=0.01) in the IA group were higher than those in the control group. The C allele frequencies (OR=0.68, 95% CIs=0.50, 0.92; p=0.01) were significantly lower in patients than in controls. When stratified by the site, shape, size, and the Fisher Grade of IAs, no statistically significant result was observed. This study suggested that the IL-6-572GG genotype was associated with a higher risk of IA in a Chinese population.

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