APA
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Mazzarotto, F., Hawley, M. H., Beltrami, M., Beekman, L., de Marvao, A., McGurk, K., … Walsh, R. (2021). Systematic large-scale assessment of the genetic architecture of left ventricular noncompaction reveals diverse etiologies. Genetics in Medicine.
Chicago/Turabian
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Mazzarotto, F., Megan H Hawley, M. Beltrami, L. Beekman, A. de Marvao, K. McGurk, B. Statton, et al. “Systematic Large-Scale Assessment of the Genetic Architecture of Left Ventricular Noncompaction Reveals Diverse Etiologies.” Genetics in Medicine (2021).
MLA
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Mazzarotto, F., et al. “Systematic Large-Scale Assessment of the Genetic Architecture of Left Ventricular Noncompaction Reveals Diverse Etiologies.” Genetics in Medicine, 2021.
BibTeX Click to copy
@article{f2021a,
title = {Systematic large-scale assessment of the genetic architecture of left ventricular noncompaction reveals diverse etiologies},
year = {2021},
journal = {Genetics in Medicine},
author = {Mazzarotto, F. and Hawley, Megan H and Beltrami, M. and Beekman, L. and de Marvao, A. and McGurk, K. and Statton, B. and Boschi, B. and Girolami, F. and Roberts, Angharad M. and Lodder, E. and Allouba, M. and Romeih, S. and Aguib, Yasmine and Baksi, A. and Pantazis, A. and Prasad, S. and Cerbai, E. and Yacoub, M. and O’Regan, D. and Cook, S. and Ware, J. and Funke, B. and Olivotto, I. and Bezzina, C. and Barton, P. and Walsh, R.}
}
To characterize the genetic architecture of left ventricular noncompaction (LVNC) and investigate the extent to which it may represent a distinct pathology or a secondary phenotype associated with other cardiac diseases. We performed rare variant association analysis with 840 LVNC cases and 125,748 gnomAD population controls, and compared results to similar analyses on dilated cardiomyopathy (DCM) and hypertrophic cardiomyopathy (HCM). We observed substantial genetic overlap indicating that LVNC often represents a phenotypic variation of DCM or HCM. In contrast, truncating variants in MYH7, ACTN2, and PRDM16 were uniquely associated with LVNC and may reflect a distinct LVNC etiology. In particular, MYH7 truncating variants (MYH7tv), generally considered nonpathogenic for cardiomyopathies, were 20-fold enriched in LVNC cases over controls. MYH7tv heterozygotes identified in the UK Biobank and healthy volunteer cohorts also displayed significantly greater noncompaction compared with matched controls. RYR2 exon deletions and HCN4 transmembrane variants were also enriched in LVNC, supporting prior reports of association with arrhythmogenic LVNC phenotypes. LVNC is characterized by substantial genetic overlap with DCM/HCM but is also associated with distinct noncompaction and arrhythmia etiologies. These results will enable enhanced application of LVNC genetic testing and help to distinguish pathological from physiological noncompaction.