Methylation of F2RL3, CDKN2A genes and sudden cardiac death

The aim of the study was to evaluate the association of methylation of the F2RL3, CDKN2A gene with sudden cardiac death (SCD). Material and methods. Case-control study design. The SCD group included 150 deceased men (mean age 46.7 ± 9.2 years) with the main pathological diagnoses of acute circulatory failure, acute coronary insufficiency, which meets the SCD criteria of the European Society of Cardiology. The control group included 150 men who died suddenly, but not due to cardiovascular pathology (mean age 42.6 ± 1.2 years). DNA was isolated by phenol-chloroform extraction from myocardial tissue in both groups. The methylation status of the F2RL3 gene (19: 16890405-16890606, GRCh38.p13) and the CDKN2A gene (9: 21974726-21974877, GRCh38.p13) was assessed by methyl-specific polymerase chain reaction. Results. In the SCD group, 17.3 % (26/150) had the F2RL3 gene completely methylated (MM); in 6.0 % (9/150) it is completely unmethylated (UU); 76.7 % (115/150) had both methylated and unmethylated F2RL3 (MU) gene. In the control group, 16 % (24/150) had the F2RL3 gene completely methylated (MM); in 5.3 % (8/150), it is completely unmethylated (UU); 78.7 % (118/150) had both methylated and unmethylated F2RL3 (MU) gene. When comparing the groups, there were no statistically significant differences in the methylation status of the F2RL3 gene between the groups (p > 0.05). In all subjects in the SCD group and the control group, the CDKN2A gene is completely unmethylated. Conclusions. Methylation of genes F2RL3, CDKN2A is not associated with sudden cardiac death.