Identification of Novel Genetic Variants and Biomarkers of Disease Progression in Arrhythmogenic Cardiomyopathy
Mayo Clinic
Summary
Arrhythmogenic ventricular cardiomyopathy (AVC) is a genetic condition which affects the heart and can lead to heart failure and rhythm problems, of which, sudden cardiac arrest or death is the most tragic and dangerous. Diagnosis and screening of blood-relatives is very difficult as the disease process can be subtle, but sufficient enough, so that the first event is sudden death. The Mayo Clinic AVC Registry is a collaboration between Mayo Clinic, Rochester, USA and Papworth Hospital, Cambridge University Hospitals, Cambridge, UK. The investigators aim to enroll patients with a history of AVC or sudden cardiac death which may be due to AVC, from the US and UK. Family members who are blood-relatives will also be invited, including those who do not have the condition. Data collected include symptoms, ECG, echocardiographic, MRI, Holter, loop recorder, biopsies, exercise stress testing, blood, buccal and saliva samples. Objectives of the study: 1. Discover new genes or altered genes (variants) which cause AVC 2. Identify biomarkers which predict (2a) disease onset, (2b) disease progression, (2c) and the likelihood of arrhythmia (ventricular, supra-ventricular and atrial fibrillation) 3. Correlate genotype with phenotype in confirmed cases of AVC followed longitudinally using clinical, electrocardiographic and imaging data. 4. Characterize desmosomal changes in buccal mucosal cells with genotype and validate with gold-standard endomyocardial biopsies
Description
Sudden cardiac arrest (SCA) accounts for over 360,000 deaths in the US and 400,000 in Europe per annum, including thousands under the age of 40 who die unexpectedly and without warning. Whilst the majority of SCAs are triggered by heart attacks, in those under the age of 40 years this tends to be due to genetic heart disease, which if identified early may save lives of other family members. Epidemiological and post-mortem studies have shown arrhythmogenic ventricular cardiomyopathy (AVC) as a leading cause of SCA, responsible for up to 25% of deaths in this age group. AVC is a highly clinical…
Eligibility
- Age range
- Not specified
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: * Patients with a diagnosis of a non-MI SCA who survived * Patients with a non-MI SCD * Patient with a SCA associated with seizures, epilepsy, syncope, drowning and near-drowning, where a cardiomyopathy is suspected * Family member of a patient diagnosed with primary cardiomyopathy (including HCM, idiopathic DCM, AVC) Exclusion Criteria: * Patients with a clear, unambiguous known cause of SCA or SCD such as myocardial infarction or heart failure secondary to ischemic heart disease * Significant coronary artery disease (Epicardial coronary artery stenosis \>50%) which can…
Locations (2)
- Mayo ClinicRochester, Minnesota
- Royal Papworth Hospital NHS Foundation TrustPapworth Everard, Cambridge