Ventricular arrhythmias were documented in 9 of 10 (90%) LMNA mutation-positive subjects, and ranged from sustained VT (n = 2), detected on telemetry (Fig. 2D) or ICD memory, to monomorphic NSVT with LBBB (n = 3) (Fig. 2E) and/or right bundle-branch block (RBBB) morphology (n = 3) (Fig. 2F), and polymorphic PVCs (n = 9) (Table 2), recorded on Holter monitoring. The gene discussed is LMNA; the disease is Ventricular arrhythmia.