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Published on: June 14, 2016
Natural history of hypertrophic cardiomyopathy
1Department of Cardiological Sciences, St. George's Hospital Medical School, Cranmer Terrace, London SW17 0RE, UK. pelliott@sghms.ac.uk
Insights
Hypertrophic cardiomyopathy, a common inherited heart disorder, stems from cardiac sarcomere issues. Recent genetic research offers new insights into its varied natural history and clinical outcomes.
Area of Science:
- Cardiovascular Medicine
- Genetics
- Molecular Cardiology
Background:
- Hypertrophic cardiomyopathy (HCM) is the most prevalent inherited cardiovascular disorder.
- Affecting up to 1 in 500 individuals, HCM is characterized by a diseased cardiac sarcomere.
- It presents with variable clinical penetrance and diverse clinical manifestations.
Purpose of the Study:
- To review the natural history of hypertrophic cardiomyopathy.
- To emphasize the impact of recent genetic studies on understanding HCM.
- To provide insights into the clinical course and management of this condition.
Main Methods:
- Literature review focusing on hypertrophic cardiomyopathy.
- Analysis of clinical data and patient outcomes.
- Integration of findings from recent genetic studies.
Main Results:
- Most patients with HCM experience mild or no symptoms and a benign course.
- A subset of patients face risks of severe complications like sudden death and heart failure.
- Genetic studies are crucial for understanding disease variability.
Conclusions:
- Hypertrophic cardiomyopathy is a complex genetic disorder with a wide spectrum of clinical presentations.
- Understanding the natural history, informed by genetic research, is key to managing patient risk.
- Further research into genetic factors will refine diagnosis and treatment strategies.
Abstract:
Hypertrophic cardiomyopathy is a disease of the cardiac sarcomere and is the most common inherited cardiovascular disorder affecting up to 1 in 500 people in the general population. The disease is typified by variable clinical penetrance and heterogeneous clinical expression, resulting in a wide range of clinical manifestations. Most patients have few if any symptoms and a relatively benign clinical course. A minority are at risk of serious complications including ventricular arrhythmia, sudden death, thromboembolism, congestive cardiac failure, heart block, and infective endocarditis. This article reviews the natural history of the disease, with particular emphasis on lessons learned from recent genetic studies.
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