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). Here, CTNNA3 is linked to capillary malformation-arteriovenous malformation 1.