Related Experiment Video
Updated: Aug 30, 2025

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
[Hypertrophic cardiomyopathies and ATTR amyloidosis - a current review for clinical practice]
Carsten Tschöpe1,2,3, Ahmed Elsanhoury1, Sonja Diekmann2
1Berlin Institute of Health at Charité (BIH), Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Berlin, Germany.
Insights
Hypertrophic cardiomyopathies (HCM) involve left ventricular wall thickening (≥15 mm). Distinguishing HCM from genetic sarcomeric diseases and cardiac amyloidoses is crucial for patient prognosis and effective treatment strategies.
Area of Science:
- Cardiology
- Genetics
- Pathology
Background:
- Cardiomyopathies encompass dilated, restrictive, and hypertrophic forms.
- Hypertrophic cardiomyopathy (HCM) is defined by left ventricular wall thickness ≥15 mm.
- HCM can be obscured by genetic sarcomeric diseases, storage diseases, or syndromes.
Purpose of the Study:
- To highlight the diagnostic challenges in differentiating HCM subtypes.
- To emphasize the clinical significance of distinguishing between sarcomere mutations and cardiac amyloidoses.
- To underscore the importance of early diagnosis for improved patient prognosis.
Main Methods:
- Review of clinical definitions and diagnostic criteria for cardiomyopathies.
- Discussion of underlyingPathophysiological mechanisms including genetic and storage diseases.
- Analysis of differential diagnostic approaches in clinical practice.
Main Results:
- HCM diagnosis relies on specific left ventricular wall thickness measurements.
- Genetic sarcomeric diseases and cardiac amyloidoses present overlapping features with HCM.
- Accurate differentiation is often challenging due to shared clinical presentations.
Conclusions:
- Distinguishing between genetic sarcomeric diseases and cardiac amyloidoses is critical for HCM management.
- Early and accurate diagnosis significantly impacts patient prognosis.
- Further research into specific biomarkers and diagnostic tools may improve differentiation.
Abstract:
Cardiomyopathies include dilated and restrictive cardiomyopathies as well as the various forms of hypertrophic cardiomyopathies (HCM). By definition, HCM is considered to occur when left ventricular wall thickness is ≥ 15 mm. This may be masked by genetic sarcomeric diseases, storage diseases, or syndromes. In clinical practice, sarcomere mutations and the cardiac amyloidoses are of particular interest because they are not always easy to distinguish from each other and early diagnosis of the disease is important for prognosis.
Related Concept Videos
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Cardiomyopathy V: Interprofessional Care
Cardiomyopathy I: Introduction and Classification
Cardiomyopathy IV: Restrictive Cardiomyopathy
Cardiomyopathy II: Dilated Cardiomyopathy
Myocarditis II: Clinical Features and Diagnostic Tests

