Lamin A/C-related dilated cardiomyopathy (DCM) is one of the most common inherited cardiomyopathies and is characterised by early-onset atrioventricular (AV) block, supraventricular and ventricular arrhythmias, and progressive heart failure [1]. The gene discussed is LMNA; the disease is familial dilated cardiomyopathy.