Identification of a nonsense mutation in TNNI3K associated with cardiac conduction disease.
J Clin Lab Anal
; 34(9): e23418, 2020 Sep.
Article
en En
| MEDLINE
| ID: mdl-32529721
ABSTRACT
BACKGROUND:
Cardiac conduction disease (CCD) is a common cardiovascular disease which can lead to life-threatening conditions. The importance of heredity in CCD has been realized in recent years. Several causal genes have been found to be implicated in CCD such as SCN5A, TRPM4, SCN1B, TNNI3K, LMNA, and NKX2.5. To date, only four genetic mutations in TNNI3K have been identified related to CCD.METHODS:
Whole-exome sequencing (WES) was carried out in order to identify the underlying disease-causing mutation in a Chinese family with CCD. The potential mutations were confirmed by Sanger sequencing. Real-time qPCR was used to detect the level of TNNI3K mRNA expression.RESULTS:
A nonsense mutation in TNNI3K (NM_015978.2 g.170891C > T, c.1441C > T) was identified in this family and validated by Sanger sequencing. Real-time qPCR confirmed that the level of TNNI3K mRNA expression was decreased compared with the controls.CONCLUSIONS:
This study found the first nonsense TNNI3K mutation associated with CCD in a Chinese family. TNNI3K harboring the mutation (c.1441C > T) implicated a loss-of-function pathogenic mechanism with an autosomal dominant inheritance pattern. This research enriches the phenotypic spectrum of TNNI3K mutations, casting a new light upon the genotype-phenotype correlations between TNNI3K mutations and CCD and indicating the importance of TNNI3K screening in CCD patients.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Proteínas Serina-Treonina Quinasas
/
Codón sin Sentido
/
Trastorno del Sistema de Conducción Cardíaco
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Aged80
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Humans
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Male
/
Middle aged
País/Región como asunto:
Asia
Idioma:
En
Revista:
J Clin Lab Anal
Asunto de la revista:
TECNICAS E PROCEDIMENTOS DE LABORATORIO
Año:
2020
Tipo del documento:
Article
País de afiliación:
China