Costa, Marina C.2019-07-262019-07-262019Rev Port Cardiol. 2019;38(6):449-4500870-2551http://hdl.handle.net/10451/39249© 2019 Sociedade Portuguesa de Cardiologia. Published by Elsevier España, S.L.U. All rights reserved.Dilated cardiomyopathy (DCM), a leading cause of heart failure and sudden cardiac death, is characterized by ventricular dilatation and impaired systolic function in the absence of abnormal loading conditions or coronary artery disease. Its prevalence is approximately 1 in 2500 individuals, and 30-50% of cases are familial.engjournal article10.1016/j.repc.2019.02.006