The mean age at diagnosis is 37.6 ± 13.2 years, with an average left ventricular ejection fraction of 33.9% ± 10.3 [26] Similarly, SCN5A-related DCM is estimated to manifest between the second and fourth decades of Life, with mean LVEF reported between 34 and 37% [2, 10, 11, 28]. Here, SCN5A is linked to familial dilated cardiomyopathy.