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Genetic testing in cardiomyopathies: updates and future perspectives
Federico Garoia1, Teresa Maria Capovilla, Anna Reginato
1European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart; Cardiovascular Department, Azienda Sanitaria-Universitaria Giuliano Isontina (ASUGI), Trieste, Italy.
Insights
Genetic testing is revolutionizing the diagnosis and prognosis of cardiomyopathies, enabling personalized treatments and family screening for inherited heart conditions. This approach aids in assessing risk and guiding interventions for better patient outcomes.
Area of Science:
- Cardiology
- Genetics
- Precision Medicine
Background:
- Cardiomyopathies are diverse heart muscle diseases causing significant morbidity and mortality.
- Genetic factors, including Mendelian and non-Mendelian inheritance, are critical in cardiomyopathy development.
- Environmental influences also contribute to these cardiac disorders.
Purpose of the Study:
- To review the diagnostic and prognostic utility of genetic testing in cardiomyopathies.
- To explore the role of genetic profiles in personalized interventions and risk assessment.
- To highlight the potential of gene-targeted therapies and family screening.
Main Methods:
- Review of current literature on genetic testing in cardiomyopathies.
- Analysis of diagnostic and prognostic applications of genetic testing.
- Discussion of gene-targeted therapies and family screening strategies.
Main Results:
- Genetic testing offers enhanced diagnostic and prognostic characterization of cardiomyopathies.
- It provides crucial insights for assessing arrhythmic risk and guiding implantable cardioverter defibrillator (ICD) implantation.
- Emerging gene-targeted therapies show promise for improving patient outcomes.
Conclusions:
- Genetic testing is essential for diagnosing, predicting risk, and managing inherited cardiomyopathies.
- Personalized medicine approaches, informed by genetic profiles, are key to optimizing patient care.
- Further understanding of genetic, environmental, and lifestyle interactions is needed for precision care.
Abstract:
Cardiomyopathies are a heterogeneous group of cardiac disorders with significant morbidity and mortality that often manifest as heart failure or sudden cardiac death. Although these conditions can be influenced by environmental factors, genetic causes play a critical role, with both Mendelian and non-Mendelian inheritance patterns contributing to their development. Advances in genetic testing have transformed clinical practice, offering new opportunities for diagnostic and prognostic characterization of cardiomyopathies, and supporting personalized interventions based on genetic profiles. This review explores the diagnostic utility of genetic testing for some specific cardiomyopathies and the complex prognostic insights it provides, especially for assessing arrhythmic risk and guiding implantable cardioverter defibrillator (ICD) implantation in primary prevention. In addition, the review highlights the emerging potential of gene-targeted therapies, which aim to improve outcomes for patients with variants in specific genes. As inherited cardiomyopathies often exhibit familial patterns, genetic testing is also crucial in family screening and management, enabling tailored monitoring and care. Recognizing the challenges posed by phenotypic variability and the interplay of genetic, comorbid, and lifestyle factors, this review emphasizes the need for a deeper understanding of these complexities to optimize precision medicine approaches in the care of inherited cardiomyopathies.
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