Clinical relevance of IL-6 gene rs1800795 polymorphism in patients with ischemic heart disease and chronic heart failure

BACKGROUND: Inflammatory cascade contributes to the development of chronic heart failure. In this way, Interleukin-6 measurement in serum is relevant for understanding a course and prognosis in patients with chronic heart failure. Interleukin-6 expression correlates with IL-6 gene rs1800795 polymorphism. AIM: This study analyzes the research articles about Interleukin-6 effects and IL-6 gene rs1800795 polymorphism in the patients with cardiovascular diseases with ischemic etiology. MATERIALS AND METHODS: Systematic review and synthesis of findings of independent studies addressing the association between Interleukin-6 measurement and IL-6 gene rs1800795 polymorphism in the patients with coronary artery disease and chronic heart failure, including prognosis assessment. RESULTS: The articles that were focused on the clinical features and outcomes in the patients with coronary artery disease and chronic heart failure depending on Interleukin-6 level have been analyzed. IL-6 gene rs1800795 polymorphism and its clinical significance have been introduced from the perspective of Interleukin-6 expression, C-reactive protein and lipids level in the blood. The meta-analysis data indicate the correlation between the rs1800795 and risk of coronary artery disease in comparison with homozygotes, as well as additive, recessive and dominant models. This review demonstrates relationship of polymorphism determination to left ventricular functioning, risks of chronic heart failure progression and future cardiovascular diseases. CONCLUSIONS: The present study demonstrates that IL-6 gene rs1800795 polymorphism can provide comprehensive insights for prognosis assessment in patients with chronic heart failure.