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Updated: May 16, 2025

Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation
Published on: January 16, 2019
Congenital Short QT Syndrome - Review Focused on KCNQ1 p.Val141Met Variant
Minoru Horie1, Hirofumi Saiki2, Takanori Aizawa3
1Department of Cardiovascular Medicine, Shiga University of Medical Science.
None:
Short QT syndrome (SQTS) is a very rare inherited arrhythmia characterized by extremely short QT intervals on electrocardiograms and sudden cardiac death in young patients. Among the genotypes of SQTS, gain-of-function variants in the potassium voltage-gated channel subfamily Q member 1 (KCNQ1) gene are accountable for SQTS type 2 (SQT2). Pathogenic variants for SQT2 are rare and, among them, the p.Val141Met is relatively prevalent. This review summarizes findings for 5 SQTS patients harboring p.Val141Met we recently encountered and compares them to another 14 patients reported in the literature.
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