Andersen–Tawil syndrome, also called Andersen syndrome and Long QT syndrome 7, is a form of long QT syndrome.[1] It is a rare genetic disorder, and is inherited in an autosomal dominant pattern and predisposes patients to cardiac arrhythmias. Jervell and Lange-Nielsen syndrome is a similar disorder which is also associated with sensorineural hearing loss.[citation needed] It was first described by Ellen Damgaard Andersen.