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Cardiomyopathy I: Introduction and Classification

Cardiomyopathy I: Introduction and Classification

Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...

Cardiomyopathy V: Interprofessional Care

Cardiomyopathy V: Interprofessional Care

Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...

Cardiomyopathy II: Dilated Cardiomyopathy

Cardiomyopathy II: Dilated Cardiomyopathy

Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...

Cardiomyopathy IV: Restrictive Cardiomyopathy

Cardiomyopathy IV: Restrictive Cardiomyopathy

Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...

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Updated: Sep 17, 2025

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model

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Published on: August 8, 2022

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.

Journal of Cardiovascular Medicine (Hagerstown, Md.)

|June 27, 2025

Summary

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.

Keywords:

cardiomyopathies genetic testing guidelines

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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.