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Clinical implications of sarcomere and nonsarcomere gene variants in patients with left ventricular noncompaction cardiomyopathy

BACKGROUND: Robust data regarding genotype–phenotype correlations in left ventricular noncompaction cardiomyopathy (LVNC) are lacking. METHODS: About 72 cardiomyopathy‐related genes were comprehensively screened in a cohort of LVNC patients using targeted sequencing. Baseline and follow‐up data were...

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Autores principales: Li, Shijie, Zhang, Ce, Liu, Nana, Bai, Hui, Hou, Cuihong, Pu, Jielin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6732340/
https://www.ncbi.nlm.nih.gov/pubmed/31397097
http://dx.doi.org/10.1002/mgg3.874
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author Li, Shijie
Zhang, Ce
Liu, Nana
Bai, Hui
Hou, Cuihong
Pu, Jielin
author_facet Li, Shijie
Zhang, Ce
Liu, Nana
Bai, Hui
Hou, Cuihong
Pu, Jielin
author_sort Li, Shijie
collection PubMed
description BACKGROUND: Robust data regarding genotype–phenotype correlations in left ventricular noncompaction cardiomyopathy (LVNC) are lacking. METHODS: About 72 cardiomyopathy‐related genes were comprehensively screened in a cohort of LVNC patients using targeted sequencing. Baseline and follow‐up data were collected. The primary endpoint was a composite of death and heart transplantation. RESULTS: A total of 83 unrelated adult patients were included in analyses. Following stringent classification according to the American College of Medical Genetics and Genomics (ACMG) guidelines, 36 pathogenic variants of 14 genes were detected in 32 patients. Among them, 12 patients carried at least one nonsarcomere variant (NSV). At baseline, NSV carriers had a higher frequency of atrial fibrillation, but lower left ventricular ejection fraction, than did noncarriers. During a median follow‐up of 4.2 years, NSV carriers experienced a higher rate of the primary endpoint compared with noncarriers. There was no significant difference in the rate between carriers of sarcomere variant (SV) and noncarriers, as well as between carriers of SV and NSV. The presence of NSV was associated with an increased risk of the primary endpoint independent of age, sex, and cardiac function (hazard ratio: 3.61, 95% confidence interval: 1.42–9.19, p = .002). CONCLUSION: NSV may act as a genetic modifier and worsen the clinical phenotype in patients with LVNC.
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spelling pubmed-67323402019-09-12 Clinical implications of sarcomere and nonsarcomere gene variants in patients with left ventricular noncompaction cardiomyopathy Li, Shijie Zhang, Ce Liu, Nana Bai, Hui Hou, Cuihong Pu, Jielin Mol Genet Genomic Med Original Articles BACKGROUND: Robust data regarding genotype–phenotype correlations in left ventricular noncompaction cardiomyopathy (LVNC) are lacking. METHODS: About 72 cardiomyopathy‐related genes were comprehensively screened in a cohort of LVNC patients using targeted sequencing. Baseline and follow‐up data were collected. The primary endpoint was a composite of death and heart transplantation. RESULTS: A total of 83 unrelated adult patients were included in analyses. Following stringent classification according to the American College of Medical Genetics and Genomics (ACMG) guidelines, 36 pathogenic variants of 14 genes were detected in 32 patients. Among them, 12 patients carried at least one nonsarcomere variant (NSV). At baseline, NSV carriers had a higher frequency of atrial fibrillation, but lower left ventricular ejection fraction, than did noncarriers. During a median follow‐up of 4.2 years, NSV carriers experienced a higher rate of the primary endpoint compared with noncarriers. There was no significant difference in the rate between carriers of sarcomere variant (SV) and noncarriers, as well as between carriers of SV and NSV. The presence of NSV was associated with an increased risk of the primary endpoint independent of age, sex, and cardiac function (hazard ratio: 3.61, 95% confidence interval: 1.42–9.19, p = .002). CONCLUSION: NSV may act as a genetic modifier and worsen the clinical phenotype in patients with LVNC. John Wiley and Sons Inc. 2019-08-09 /pmc/articles/PMC6732340/ /pubmed/31397097 http://dx.doi.org/10.1002/mgg3.874 Text en © 2019 The Authors. Molecular Genetics & Genomic Medicine published by Wiley Periodicals, Inc. This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Original Articles
Li, Shijie
Zhang, Ce
Liu, Nana
Bai, Hui
Hou, Cuihong
Pu, Jielin
Clinical implications of sarcomere and nonsarcomere gene variants in patients with left ventricular noncompaction cardiomyopathy
title Clinical implications of sarcomere and nonsarcomere gene variants in patients with left ventricular noncompaction cardiomyopathy
title_full Clinical implications of sarcomere and nonsarcomere gene variants in patients with left ventricular noncompaction cardiomyopathy
title_fullStr Clinical implications of sarcomere and nonsarcomere gene variants in patients with left ventricular noncompaction cardiomyopathy
title_full_unstemmed Clinical implications of sarcomere and nonsarcomere gene variants in patients with left ventricular noncompaction cardiomyopathy
title_short Clinical implications of sarcomere and nonsarcomere gene variants in patients with left ventricular noncompaction cardiomyopathy
title_sort clinical implications of sarcomere and nonsarcomere gene variants in patients with left ventricular noncompaction cardiomyopathy
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6732340/
https://www.ncbi.nlm.nih.gov/pubmed/31397097
http://dx.doi.org/10.1002/mgg3.874
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