Skip to
  1. Homepage
  2. Rare diseases
  3. Search
Simple search

Simple search

*
(*) mandatory field





 

Other search option(s)

Arrhythmogenic right ventricular dysplasia

Orpha number ORPHA247
Synonym(s) ARVC
ARVD
Arrhythmogenic right ventricular cardiomyopathy
Prevalence 1-5 / 10 000
Inheritance Autosomal recessive
Autosomal dominant
Age of onset Adult
ICD-10
  • I42.8
ICD-O -
OMIM -
UMLS
  • C0349788
MeSH
  • D019571
MedDRA
  • 10058093
SNOMED CT
  • 253528005
  • 281170005

Summary

Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is a heart muscle disease clinically characterized by life-threatening ventricular arrhythmias. Its prevalence has been estimated to vary from 1:2,500 to 1:5,000. ARVC/D is a major cause of sudden death in the young and in athletes. The clinical picture may include: a subclinical phase without symptoms and with ventricular fibrillation being the first presentation; an electrical disorder with palpitations and syncope, due to tachyarrhythmias of right ventricular origin; right ventricular or biventricular pump failure, so severe as to require transplantation. The pathology consists of a genetically determined dystrophy of the right ventricular myocardium with fibro-fatty replacement to such an extent that it leads to right ventricular aneurysms. The causative genes (ACTN2, DSC2, DSG2, DSP, JUP, TMEM43, LDB3, PKP2, RYR2, TGFB3) encode proteins of mechanical cell junctions (plakoglobin, plakophilin, desmoglein, desmocollin, desmoplakin) and account for intercalated disk remodeling. Familial occurrence with an autosomal dominant pattern of inheritance and variable penetrance has been reported. Recessive variants associated with palmoplantar keratoderma and woolly hair (see these terms) have also been described. Clinical diagnosis may be achieved by demonstrating functional and structural alterations of the right ventricle, depolarization and repolarization abnormalities, arrhythmias with the left bundle branch block morphology and fibro-fatty replacement through endomyocardial biopsy. Two-dimensional echocardiography, angiography and magnetic resonance are the imaging tools for visualizing structural-functional abnormalities. Electroanatomic mapping is able to detect areas of low voltage corresponding to myocardial atrophy with fibro-fatty replacement. The main differential diagnoses are idiopathic right ventricular outflow tract tachycardia, myocarditis, dilated cardiomyopathy and sarcoidosis (see these terms). Management revolves around palliative therapy and consists of antiarrhythmic drugs, catheter ablation and implantable cardioverter-defibrillators (ICDs). Young age, family history of juvenile sudden death, QRS dispersion greater than or equal to 340 ms, T-wave inversion, left ventricular involvement, ventricular tachycardia, syncope and prior cardiac arrest are the major risk factors for an adverse prognosis. Preparticipation screening for sport eligibility has been proven to be effective in detecting asymptomatic patients and sport disqualification has been life-saving, substantially decreasing the number of cases of sudden death in young athletes.

Expert reviewer(s)

  • Pr Cristina BASSO
  • Dr Domenico CORRADO
  • Pr Gaetano THIENE

(*) Required fields.

Attention: Only comments seeking to improve the quality and accuracy of information on the Orphanet website are accepted. For all other comments, please send your remarks via contact us. Only comments written in English can be processed.


Captcha image

Detailed information

Summary information
Review article
  • EN (2007)
Clinical practice guidelines
  • EN (2013)
Guidance for genetic testing
  • EN (2013,pdf)
Clinical genetics review
  • EN (2014)
Get Acrobat Reader
The documents contained in this web site are presented for information purposes only. The material is in no way intended to replace professional medical care by a qualified specialist and should not be used as a basis for diagnosis or treatment.