SCN5A and dilated cardiomyopathy: As sudden cardiac death is a possible first presenting complaints for patients with dilated cardiomyopathy especially those with LMNA gene defects (where penetrance rates are noted to be very high over 30 years and associated with high rates of sudden death) and in particular SCN5A defects, early implantation of ICD may be considered in these populations, especially in the setting of family history of sudden cardiac death or implantable cardiac defibrillator usage [109].