RRAD and Ventricular arrhythmia: hiPSC-CMs expressing an R211H substitution in the Ras-related associated with diabetes (RRAD) gene mimic the single-cell electrophysiological characteristics of Brugada syndrome, a disorder predisposing the patient to ventricular arrhythmias, indicating that RRAD is possibly a novel susceptibility gene for Brugada syndrome [154].