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Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
The genetics of hypertrophic cardiomyopathy
Mohammed Akhtar1, Perry Elliott1
1Bart's Heart Centre, St Bartholomew's Hospital, London & University College London.
Insights
Genetic testing for hypertrophic cardiomyopathy (HCM) aids in identifying at-risk relatives and diagnosing other conditions. Future applications include disease stratification and targeted therapies for HCM.
Area of Science:
- Cardiovascular Genetics
- Molecular Cardiology
Background:
- Hypertrophic cardiomyopathy (HCM) is a genetic heart muscle disease.
- Autosomal dominant inheritance due to sarcomere protein gene mutations is common.
- Other genetic factors involve calcium handling and cytoskeleton proteins.
Purpose of the Study:
- To review the current and emerging roles of genetic testing in HCM.
- To highlight the utility of genetic testing for familial screening and diagnosis of genocopies.
- To discuss the future potential of genetic information in disease management.
Main Methods:
- Literature review of genetic testing applications in HCM.
- Analysis of current clinical guidelines and emerging research.
- Synthesis of data on genetic basis, diagnosis, and therapeutic implications.
Main Results:
- Genetic testing is crucial for identifying at-risk individuals in HCM families.
- It aids in differentiating HCM from other genetic disorders (genocopies) with distinct prognoses.
- Current prognostic predictive value is limited, but evolving.
Conclusions:
- Genetic testing is essential for HCM diagnosis and family screening.
- Emerging data indicate a growing role in disease stratification.
- Genetic insights are paving the way for future disease-modifying therapies.
Abstract:
Hypertrophic cardiomyopathy (HCM) is most commonly transmitted as an autosomal dominant trait, caused by mutations in genes encoding cardiac sarcomere proteins1-3. Other inheritable causes of the disease include mutations in genes coding for proteins important in calcium handling or that form part of the cytoskeleton4-6. At present, the primary clinical role of genetic testing in HCM is to facilitate familial screening to allow the identification of individuals at risk of developing the disease7,8. It is also used to diagnose genocopies, such as lysosomal9-11 and glycogen storage disease which have different treatment strategies, rates of disease progression and prognosis12-14. The role of genetic testing in predicting prognosis is limited at present, but emerging data suggest that knowledge of the genetic basis of disease will assume an important role in disease stratification15-17 and offer potential targets for disease-modifying therapy in the near future18.
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