Arrhythmogenic Right Ventricular Dysplasia, Familial, 13, also known as arrhythmogenic right ventricular dysplasia 13, is related to childhood osteosarcoma. An important gene associated with Arrhythmogenic Right Ventricular Dysplasia, Familial, 13 is CTNNA3 (Catenin Alpha 3). Affiliated tissues include heart and heart-atrium, and related phenotypes are ventricular tachycardia and left bundle branch block