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Updated: Sep 20, 2025

Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation
Published on: January 16, 2019
A Novel NKX2-5 Variant in a Child with Left Ventricular Noncompaction, Atrial Septal Defect, Atrioventricular
Yuya Yamada1, Kazushi Yasuda1, Yukiko Hata2
1Department of Cardiology, Aichi Children's Health and Medical Center, Obu 474-8710, Japan.
Abstract:
The NKX2-5 gene encodes a transcription factor and is actively involved in heart formation and development. A pediatric case with its variant and left ventricular noncompaction (LVNC) has not been reported. A 12-year-old girl with a history of a surgery for atrial septal detect was referred because of syncope during exercise. The electrocardiogram showed atrioventricular block, and the echocardiogram revealed prominent trabeculations in the left ventricular wall, suggesting LVNC. A novel heterozygous variant in the NKX2-5 gene (NM_004387.1: c.255_256delCT, p.Phe86fs) was identified. NKX2-5 variants should be considered in cases with LVNC, congenital heart disease, arrhythmia, and syncope to prevent sudden cardiac death.
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