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Published on: August 8, 2022
Apical hypertrophic cardiomyopathy in encephalomyopathy
Josef Finsterer1, Wolfgang Kopsa, Claudia Stöllberger
1Krankenanstalt Rudolfstiftung, Vienna, Austria. duarte@aonmail.at
Insights
Apical hypertrophic cardiomyopathy (AHC) can present mildly and be linked to various extracardiac issues. This case highlights AHC
Area of Science:
- Cardiology
- Neurology
- Metabolic Disorders
Background:
- Apical hypertrophic cardiomyopathy (AHC) is a cardiac condition with known associations with neurological abnormalities.
- The co-occurrence of AHC and metabolic myopathy has not been previously documented.
- Metabolic myopathies are a group of inherited disorders affecting muscle energy production.
Observation:
- An 84-year-old woman presented with a complex history of neurological and systemic symptoms including gait disturbance, dementia, Parkinsonism, ptosis, ophthalmoparesis, tetraparesis, polyneuropathy, lactacidosis, polyarthralgia, dorsalgia, and osteoporosis.
- Cardiac evaluation revealed electrocardiogram (ECG) abnormalities, diastolic dysfunction, and apical hypertrophic cardiomyopathy (AHC) on transthoracic echocardiography.
- Cardiac magnetic resonance imaging confirmed AHC and identified a small left ventricular apical aneurysm.
Findings:
- The patient exhibited a mild form of apical hypertrophic cardiomyopathy (AHC) alongside a constellation of multisystemic extracardiac abnormalities.
- The clinical presentation suggested an underlying metabolic disease, likely related to impaired oxidative metabolism.
- This case represents the first reported instance of AHC associated with metabolic myopathy.
Implications:
- Apical hypertrophic cardiomyopathy (AHC) may manifest with a milder cardiac phenotype than previously recognized.
- The findings suggest a potential link between AHC and systemic metabolic disorders, warranting further investigation.
- This case underscores the importance of considering multisystem involvement in patients diagnosed with AHC.
Abstract:
Apical hypertrophic cardiomyopathy (AHC) is associated with neurological abnormalities such as transient ischemic attack, stroke, limb-girdle muscular dystrophy, or eosinophilic myositis in single cases. The association of AHC and metabolic myopathy has not been reported. In an 84-year-old woman with long-standing gait disturbance, dementia, Parkinson syndrome, ptosis, ophthalmoparesis, tetraparesis, polyneuropathy, lactacidosis, polyarthralgia, dorsalgia, and osteoporosis, cardiac examination for long-standing anginal chest pain and palpitations, revealed supraventricular and monomorphic ventricular ectopic beats, hypertrophic signs, ST-depression and negative T waves on electrocardiogram (ECG), diastolic dysfunction with impaired relaxation, and AHC on transthoracic echocardiography. AHC was confirmed by cardiac magnetic resonance imaging, which additionally showed a small left ventricular apical aneurysm with a wall-thickness of only 3 mm. The patient was suspected to additionally have a multisystem disease, most likely due to impaired oxidative metabolism. This case shows that AHC may take a mild course and be associated with a number of extracardiac abnormalities.
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