Genetic and Electrophysiologic Study in Focal Drug-resistant Epilepsies

Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age3-25
SponsorFondation Ophtalmologique Adolphe de Rothschild

About this trial

Brain somatic mutations are increasingly recognized as a major cause of focal epilepsies. These include mTOR pathway mutations underlying cortical malformations such as focal cortical dysplasia and hemimegalencephaly, and SLC35A2 mutations in MOGHE, and activating variants in the SHH pathway in hypothalamic hamartomas.

This study aims to identify brain somatic mutations using paired blood-brain samples and trace DNA from stereo-EEG electrodes, and to perform functional validation of candidate variants in children with drug-resistant focal epilepsy.

Eligibility criteria

Qualifiers

Children with focal drug-resistant epilepsy including Focal Cortical Dysplasia, Hemimegalencephaly, Tuberous Sclerosis, Mild malformation of cortical development with oligodendroglial hyperplasia in epilepsy (MOGHE), Hypothalamic Hamartomas, Sturge-Weber syndrome, Rasmussen encephalitis, gliomas

Their parents who have signed informed consent 1) for their child's participation (for parents) and 2) for themselves

Social security coverage or foreign regime recognized in France

Disqualifiers

refusal to participate in the study

contraindication to anaesthesia, to MRI or to surgery

no medical insurance coverage

Trial design

Treatments tested in this trial

  • Sampling of blood, frozen resected tissues, and cerebrospinal fluid (CSF)

Treatment groups

450 Participants
are divided into 1 treatment group