Clinical introduction

A 43-year-old man was evaluated in our arrhythmia and sudden arrhythmic death clinic because of his brother’s sudden cardiac death (SCD) at the age of 41 years. The deceased had not presented syncopal attacks nor chest pain before, and died suddenly while resting after a whole day of driving a truck. Postmortem examination was unrevealing for anatomical pathology, suggesting sudden arrhythmic death syndrome. A 12-lead ECG was recovered from the dead proband, which was unremarkable with a QTc interval of 430 ms. No DNA was available for genetic purposes. …