Sudden cardiac death (including 1 occurred while following-up) was reported in 7 family members (17.5%, 7/40). LVNC was diagnosed in 10 out of the 33 family members (30.3%) and heart enlargement was evidenced in 3, heart failure in 2, complete left branch conductive block in 3, serious sick sinus syndrome (SSS) treated with permanent pacemaker implantation in 1 and paroxysmal supraventricular tachycardia treated with radiofrequency ablation procedure in 1 out of these 10 LVNC patients.