According to the test results, cousins (IV:1 and IV:2) have the same variants in ABCG8 (intronic), CTNNA3, and RASA1 genes, involved in the pathogenesis of arrhythmogenic right ventricular cardiomyopathy (CTNNA3) and RASA1 (capillary malformations, Park Weber syndrome). The gene discussed is ABCG8; the disease is Arrhythmogenic right ventricular dysplasia.