Related Experiment Video
Updated: Jan 15, 2026

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
Phenotyping the Many Faces of Hypertrophic Cardiomyopathy
Paul Geenty1, Belinda Gray2, Liza Thomas3
1Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales 2050, Australia; Department of Cardiology, Westmead Hospital, Westmead, New South Wales 2145, Australia.
Insights
Hypertrophic cardiomyopathy, an inherited heart condition, presents diverse symptoms. Accurate phenotyping helps identify patient groups for tailored prognosis and sudden cardiac death prevention.
Area of Science:
- Cardiology
- Genetics
- Internal Medicine
Background:
- Hypertrophic cardiomyopathy (HCM) is the most prevalent inherited cardiomyopathy.
- It is defined by left ventricular hypertrophy (LVH) ≥15 mm without other causes.
- HCM exhibits a heterogeneous clinical phenotype.
Purpose of the Study:
- To emphasize the importance of accurate clinical phenotyping in hypertrophic cardiomyopathy.
- To highlight the varied clinical manifestations and their impact on prognosis.
- To underscore the necessity of risk stratification for preventing sudden cardiac death.
Main Methods:
- Clinical data review.
- Phenotypic classification of hypertrophic cardiomyopathy patients.
- Prognostic factor analysis.
Main Results:
- Identified key clinical manifestations including left ventricular outflow tract obstruction, mitral valve abnormalities, and ventricular arrhythmias.
- Demonstrated that distinct phenotypic groups have different natural histories.
- Highlighted the link between specific phenotypes and risk for sudden cardiac death.
Conclusions:
- Accurate clinical phenotyping is essential for understanding hypertrophic cardiomyopathy.
- Phenotypic characterization enables better risk stratification and personalized management.
- Targeted interventions based on phenotype can improve patient outcomes and prevent sudden cardiac death.
Abstract:
Hypertrophic cardiomyopathy is the most common inherited cardiomyopathy and is defined by the presence of left ventricular hypertrophy 15 mm or greater in the absence of any other identifiable cause. Beyond this definition, clinical phenotype is heterogeneous, and associated clinical manifestations occur in varying proportions of patients, including left ventricular outflow tract obstruction, systolic anterior motion of the mitral valve with associated mitral regurgitation, ventricular arrhythmias, and sudden cardiac death. Accurate clinical phenotyping allows the identification of groups with distinct natural history and prognosis, with risk stratification being crucial for prevention of sudden cardiac death.
Related Concept Videos
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Cardiomyopathy V: Interprofessional Care
Cardiomyopathy I: Introduction and Classification
Cardiomyopathy II: Dilated Cardiomyopathy
Cardiomyopathy IV: Restrictive Cardiomyopathy
Pathophysiology of Heart Failure

