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Updated: Apr 3, 2026

Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation
Published on: January 16, 2019
[Molecular genetic diagnostics of the cause of ventricular arrhythmias in children]
Anders Krogh Brøndberg1, Jesper Vandborg Bjerre, Jens Cosedis Nielsen
1anders.kragh@clin.au.dk.
Abstract:
Andersen-Tawil syndrome (ATS) is a rare hereditary multi--system disorder consisting of a triad of symptoms, ventricular arrhythmias, periodic paralysis and dysmorphic features. The syndrome is associated with a loss of function mutation in the gene KCNJ2, which encodes the Kir2.1 inward rectifier potassium channel. We represent a case story of a 15-year-old girl who had unexplained arrhythmias for six years. Molecular genetic screening with a 75-heart-panel revealed a pathogenic KCNJ2 missense mutation. The patient was diagnosed with ATS.
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