In this study, although we didn't perform the precise evaluation on the arrhythmic status by electrocardiogram or telemetric studies as the previous study examined these electrophysiological properties using the same mutant mice line (17), we speculate the massive fibrosis more observed in Lmna mutant mice as shown in Supplementary Figure 1 could be the focus of ventricular arrhythmia. Here, LMNA is linked to Ventricular arrhythmia.