Calcium signaling pathway; MAPK signaling pathway; cardiac muscle contraction; adrenergic signaling in cardiomyocytes; Oxytocin signaling pathway; hypertrophic cardiomyopathy (HCM); arrhythmogenic right ventricular cardiomyopathy (ARVC); dilated cardiomyopathy. This evidence concerns the gene OXT and Arrhythmogenic right ventricular dysplasia.