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NCT03400371Recruiting

Biology of Juvenile Myoclonic Epilepsy

King's College London

Start Date

7/13/2017

Completion Date

12/31/2026

Summary

The investigators are collecting genetic information through blood samples as well as clinical and EEG data from over 1000 people with Juvenile Myoclonic Epilepsy (JME) across the UK, Europe and North America. This study will draw on both existing and new samples from JME patients. These will be compared to anonymised data from samples for 2000 controls. The goal of this study is to find the genetic cause of JME. Finding the cause will help create better treatments for JME, as well as improve patient outcomes by allowing us to detect it earlier.

Detailed Description

Epilepsy is a common neurological disorder affecting 1% of the population. There are over 30 types of epilepsy, some common, some rare. Most epilepsies arise in childhood and have a genetic cause. Approximately 40% of patients have the common forms of Genetic Generalised Epilepsy (GGE), and the commonest GGE is "Juvenile Myoclonic Epilepsy" or JME. The goal of this study is to find the genetic cause for JME. The investigators will do this by comparing the genetic code in JME patients with that in people who do not have epilepsy. This study will use clues from their electroencephalograph or brainwave test that is used to help diagnose epilepsy. Participants will provide a single blood sample, along with permission to collect clinical data about their diagnosis and a copy of their clinical EEG. There is no direct benefit or risk to the research participants but the results from this study may help other people with epilepsy or brain impairments in the future. There is overwhelming evidence that JME is caused by changes in genetic code. These changes are likely to be found in more than just one gene and there may be more than one type of change. In order to find these changes, this study will look at a large number of people with JME and compare their genetic code with people who do not have epilepsy. Finding the causes of JME will lead to better understanding of its cause, new treatments, and tailoring of treatments according to a person's genetic make-up.

Eligibility Criteria

Age Range: 10 years to 40 years

Inclusion Criteria: * Diagnosis of Juvenile Myoclonic Epilepsy in accordance with Consensus criteria * Age of myoclonus onset 10-25 years * Seizures comprising predominant or exclusive early morning myoclonus of upper extremities * EEG interictal generalized spikes and/or polyspike and waves with normal background * Current age 10-40 years Exclusion Criteria: * Myoclonus only associated with carbamazepine or lamotrigine therapy * EEG showing predominant focal interictal epileptiform discharges or abnormal background * Any evidence of progressive or symptomatic myoclonus epilepsy or focal seizures * Global learning disability * Dysmorphic syndrome * Unable to provide informed consent Regrettably, we are currently unable to accept self-referrals to the BIOJUME study.

Interventions

OTHER

Blood draw

OTHER

Existing samples

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Conditions

Juvenile Myoclonic Epilepsy

Locations

Mount Sinai-Beth Israel Medical Center

New York, New York 10003

United States

St Luke's Roosevelt Hospital

New York, New York 10025

United States

Nationwide Children's Hospital

Columbus, Ohio 43125

United States

Hospital for Sick Kids

Toronto, Ontario M5G 0A4

Canada

Charles University

Prague, 116 36

Czechia

Danish National Epilepsy Centre

Dianalund, 4293

Denmark

Tallinn Children's Hospital

Tallinn, 13419

Estonia

University Robert Debré

Paris, 75019

France

Commissione Genetica Lega Italiana contro l'Epilepssia

Roma, 00198

Italy

Vestre Viken Health Trust, Oslo

Drammen, 3004

Norway

Walton Centre for Neurology and Neurosurgery

Liverpool, L9 7LJ

United Kingdom

Royal London Hospital

London, E1 1BZ

United Kingdom

St Thomas' Hospital

London, SE1 9HT

United Kingdom

King's College Hospital NHS Trust

London, SE5 9RS

United Kingdom

Swansea University

Swansea, SA2 8PP

United Kingdom