Out of these 18 DCM-associated Nav1.5 variants, A204E (9), G213D (6, 13), R222Q (3–5, 14), R225P (15), Q419P (7), and L828F (16) have been reported as causing MEPPC or MEPPC-like syndromes (Tables 1, 2). Here, SCN5A is linked to familial dilated cardiomyopathy.