These factors include an electrocardiogram(ECG) demonstrating spontaneous type 1 Brugada Syndrome and inducibility of ventricular tachyarrhythmias during electrophysiological study. Other variables including gender, family history of SCD, and the presence of SCN5A mutation were not predictive of arrhythmic events. This evidence concerns the gene SCN5A and Brugada syndrome 1.