A combined genomic arrhythmia propensity score delineates cumulative risk.

ABSTRACT: Cardiac ventricular arrhythmias can cause sudden death. Despite known genomic contributions, multigenic risk predictors are limited. The genetics of arrhythmias and cardiomyopathies overlap, with additional overlap with epilepsy. To improve genetic risk prediction, we assemble a cohort with non-ischemic ventricular arrhythmias and controls lacking cardiac diagnoses. Here, we integrate 18 polygenic scores; variants from clinical gene panels for coding regions of cardiomyopathy, arrhythmia, and epilepsy genes; and noncoding regulatory regions mapping to those genes. Polygenic scores alone hold prognostic value. Rare coding variants identify cumulative risk extending beyond known pathogenic/likely pathogenic variants. We also find enrichment of ultrarare regulatory variation. A risk predictor

SUBMITTER: Monroe TO 

PROVIDER: S-EPMC12711699 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature