Description : Congenital long QT syndrome is electrocardiographically characterized by a prolonged
QT interval and polymorphic ventricular arrhythmias (torsade de pointes). These cardiac
arrhythmias may result in recurrent syncopes, seizure, or sudden death (Jongbloed
et al., 1999).;
Inheritance : Autosomal dominant;
Molecular basis : Caused by mutation in the alpha-1 syntrophin gene (SNTA1, 601017.0001);