Related Experiment Video

Updated: Oct 11, 2026

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
03:45

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

Published on: August 8, 2022

Haemochromatosis gene mutations in idiopathic dilated cardiomyopathy

N G Mahon1, A S Coonar, S Jeffery

  • 1Department of Cardiological Sciences, St George's Hospital Medical School, Cranmer Terrace, London SW17 0RE, UK. nmahon@sghms.ac.uk

Heart (British Cardiac Society)
|October 20, 2000
PubMed

Insights

The HFE H63D mutation is more common in idiopathic dilated cardiomyopathy patients, suggesting a link beyond iron metabolism. This finding may influence understanding of heart disease development.

Area of Science:

  • Cardiovascular Genetics
  • Molecular Cardiology
  • Genetic Epidemiology

Background:

  • Common HFE gene mutations (C282Y and H63D) are linked to hemochromatosis and cardiovascular disease.
  • Investigating HFE mutations' role in idiopathic dilated cardiomyopathy (DCM) is crucial for understanding disease pathogenesis.

Purpose of the Study:

  • To determine the association between HFE C282Y and H63D mutations and idiopathic dilated cardiomyopathy.
  • To explore the potential impact of these mutations on disease progression and patient outcomes.

Main Methods:

  • A case-control and prospective cohort study was conducted with 207 DCM patients and 200 controls.
  • HFE C282Y and H63D mutations were genotyped using polymerase chain reaction and restriction digestion.
  • Patients were followed for a median of 90 months to assess clinical outcomes.

Main Results:

  • The H63D mutation was significantly more frequent in DCM patients (36%) compared to controls (27%).
  • Compound heterozygotes for HFE mutations showed significantly elevated iron levels and transferrin saturation.
  • C282Y heterozygotes exhibited reduced ventricular dilatation and improved fractional shortening, with a trend towards better survival.

Conclusions:

  • The H63D mutation is significantly associated with idiopathic dilated cardiomyopathy.
  • The mechanism underlying this association may not be directly related to iron metabolism due to H63D's minor effect on iron status.
  • Further research is warranted to elucidate the non-iron-related pathways involved in HFE's influence on DCM.
Abstract

More Related Videos

A Doxorubicin-induced Cardiomyopathy Model in Adult Zebrafish08:09

A Doxorubicin-induced Cardiomyopathy Model in Adult Zebrafish

Published on: June 7, 2018

Related Concept Videos

Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

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 II: Dilated Cardiomyopathy01:30

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 I: Introduction and Classification01:25

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 IV: Restrictive Cardiomyopathy01:29

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...
Cardiomyopathy V: Interprofessional Care01:29

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...
Translation01:37

Translation

Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.Translation Produces the Building Blocks of LifeProteins are called the...