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 member-5 subfamily-J inwardly rectifying potassium channel
gene (KCNJ5, 600734.0001);