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Updated: Jun 19, 2025
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Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
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Making a case for mitochondria in hypertrophic cardiomyopathy
Pankaj Prasun1, Utkarsh Kohli1
1Department of Pediatrics, West Virginia University Medicine, Morgantown, WV 26506, USA.
Future Cardiology
|July 25, 2024
Summary
Hypertrophic cardiomyopathy (HCM) is linked to mitochondrial disease. Sequencing the mitochondrial genome is crucial for diagnosing HCM, especially in genotype-negative cases, and may guide new therapies.
Area of Science:
- Genetics
- Cardiology
- Mitochondrial Biology
Background:
- Hypertrophic cardiomyopathy (HCM) is a significant manifestation of inherited mitochondrial disease.
- Current genetic testing panels for HCM often exclude mitochondrial genome sequencing.
- Mitochondrial dysfunction is implicated in HCM pathogenesis, irrespective of nuclear gene panel results.
Observation:
- Mitochondrial DNA variations can modify disease presentation in individuals with known HCM genotypes.
- In individuals negative for known HCM genetic causes (genotype-negative), mitochondrial dysfunction may be the primary driver of the disease.
- A recent study linked mitochondrial dysfunction to septal hypertrophy in genotype-negative HCM patients.
Findings:
- Mitochondrial genome sequencing should be integrated into the genetic evaluation of HCM.
- Mitochondrial dysfunction is a key factor in HCM, even when standard genetic tests are negative.
- Septal hypertrophy in genotype-negative HCM is associated with mitochondrial dysfunction.
Implications:
- Including mitochondrial sequencing could improve diagnostic yield for HCM.
- Targeted therapies aimed at mitochondrial dysfunction may benefit HCM patients, particularly those who are genotype-negative.
- Understanding the role of mitochondrial DNA in HCM can lead to personalized treatment strategies.
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