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Characterization of Left Ventricular Non-Compaction Cardiomyopathy

Rebeca Lorca1,2, María Martín1,2, Isaac Pascual1,2,3

  • 1Unidad de Referencia de Cardiopatías Familiares-HUCA, Área del Corazón y Departamento de Genética Molecular, Hospital Universitario Central Asturias, 33014 Oviedo, Spain.

Journal of Clinical Medicine
|August 9, 2020
PubMed

Insights

Left ventricle non-compaction cardiomyopathy (LVNC) shows genetic heterogeneity. Genetic testing is valuable, and LVNC without a genetic cause may have a better prognosis, but anticoagulation needs careful evaluation.

Area of Science:

  • Cardiology
  • Genetics
  • Pathology

Background:

  • Left ventricle non-compaction cardiomyopathy (LVNC) is a controversial cardiomyopathy with ongoing debates regarding its genetic basis, potential acquired nature, and diagnostic accuracy.
  • Understanding the diverse etiologies and clinical trajectories of LVNC is crucial for accurate diagnosis and management.

Purpose of the Study:

  • To investigate the genetic heterogeneity and clinical characteristics of LVNC patients.
  • To evaluate the diagnostic yield of genetic testing and its correlation with clinical outcomes.

Main Methods:

  • Identified 38 LVNC patients diagnosed via cardiac MRI (CMRI) or pathology.
  • Performed next-generation sequencing (NGS) and clinical studies.
  • Conducted anatomopathological examination on eight available hearts.

Main Results:

  • The overall genetic yield for LVNC was 34.2%.
  • Patients with negative genetic testing demonstrated better or improving left ventricular ejection fraction (LVEF) during follow-up.
  • A potential trigger factor was identified in one-third of patients with negative genetic results.
  • Cerebrovascular accidents (CVAs) occurred with similar frequency in both genetically positive and negative groups.

Conclusions:

  • LVNC can arise through different pathways leading to a similar phenotype.
  • Genetic testing provides valuable insights into LVNC etiology.
  • LVNC cases without a clear genetic cause may exhibit a more favorable LVEF prognosis.
  • Anticoagulation strategies for CVA prevention require careful consideration in all LVNC patients, irrespective of genetic status.

Keywords:
cardiac magnetic resonancegeneticsleft ventricle non-compaction cardiomyopathynon-ischemic cardiomyopathy

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