- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04421846
Study of Pathophysiology of Status Epilepticus and Dysimmune Encephalitis (COLETTE)
COLETTE : Study of the Pathophysiology of Status Epilepticus and Dysimmune Encephalitis and Identification of Valuable Biomarkers
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Epilepsy is one of the most common neurological condition which concerns around 50 million people worldwide. Epilepsy is characterized by a lasting predisposition to generate seizures. Epilepsy can present as heterogenous set of clinical symptoms and is related to extremely varied etiologies. Some epilepsies are triggered by antineuronal autoantibodies and/or complicated by a status epilepticus. These conditions may induce brain atrophy, and severe neurological sequels.
The severity of these epilepsies requires significant efforts to (i) identify new therapeutic strategies able to control the evolution of dysimmune encephalitis and refractory status epilepticus, (ii) to identify their etiologies and (iii) to propose neuroprotective strategies.
Therefore, the investigators will organize a collection of biological samples (blood, cerebrospinal fluid, post-mortem brain tissues) and paraclinical data (electroencephalogram, evoked potential, CT, MRI) in patients with severe epilepsies, whether or not associated with autoantibodies, and/or evolving into status epilepticus.
This study should bring new insights allowing to better understand mechanisms that trigger the emergence of an epileptic brain (epileptogenesis) through :
(i) the identification and characterization of new pathophysiological pathways involving autoimmunity directed against the cerebral cortex and associated with severe epilepsy (ii) the identification and characterization of pathophysiological pathways participating in the excitotoxicity observed in status epilepticus.
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Vincent NAVARRO, Pr
- Phone Number: 01 42 16 19 40
- Email: vincent.navarro@aphp.fr
Study Locations
-
-
-
Paris, France, 75013
- Recruiting
- Hopital de la Pitie Salpetriere
-
Contact:
- Vincent NAVARRO, Pr
- Phone Number: 01 42 16 19 40
- Email: vincent.navarro@aphp.fr
-
Contact:
- Virginie LAMBRECQ, Dr
- Phone Number: 01 57 27 46 63
- Email: virginie.lambrecq@aphp.fr
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
Group 1:
- Patients aged 2 years or above, with status epilepticus.
- Affiliation to a French social security system excluding "Aide Médicale" Etat (AME).
- Patients or relatives have been informed and given free informed and written consent to participate
- Patients under legal protection (guardianship, curatorship) or not
Group 2:
- Patients aged 2 years or above, with clinical signs of epilepsy associated to dysimmune encephalitis.
- Affiliation to a French social security system excluding "Aide Médicale" Etat (AME).
- Patients or relatives have been informed and given free informed and written consent to participate
- Patients under legal protection (guardianship, curatorship) or not
Group 3:
- Patients aged 18 years or above, without status epilepticus and/or dysimmune encephalitis.
- Affiliation to a French social security system excluding "Aide Médicale" Etat (AME).
- Patients or relatives have been informed and given free informed and written consent to participate
- Patients under legal protection (guardianship, curatorship) or not
Exclusion Criteria:
Group 1:
- Women with known or clinically detected pregnancy.
- Patient deprived of liberty
- Patients with known neurodegenerative disease.
Group 2:
- Women with known or clinically detected pregnancy.
- Patient deprived of liberty
- Patients have been already treated by corticoids or IgIV.
Group 3:
- Women with known or clinically detected pregnancy.
- Patient deprived of liberty.
- Patients with status epilepticus.
- Patients with known neurodegenerative disease, brain tumor, severe head trauma, meningitis, subarachnoid hemorrhages, stroke.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: Group 1 : Status epilepticus
|
Collection of biological samples and clinical/paraclinical data
|
Other: Group 2 : Dysimmune encephalitis
|
Collection of biological samples and clinical/paraclinical data
|
Other: Group 3 : Control patients
|
Collection of biological samples and clinical/paraclinical data
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Identification of (i) antibodies in the plasma and in the cerebrospinal fluid of patients with dysimmune encephalitis and (ii) biomarkers for neuronal death in the plasma and in the cerebrospinal fluid of patients with status epilepticus
Time Frame: 9 months
|
Looking for antibodies with cell-based binding assay or monospecific recombinant assay.
Identification of biomarkers for neuronal death with electrochemiluminometric sandwich immunoassays (Kryptor and ModularE170, Roche Diagnostic)
|
9 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Identification of new dysimmune abnormalities
Time Frame: 9 months
|
Lymphocyte phenotyping, cytokines quantification
|
9 months
|
Identification of specific EEG patterns associated to dysimmune encephalitis and/or status epilepticus
Time Frame: 9 months
|
EEG signals will be reviewed and classifiyed according to a EEG-based seizure build-up score in status epilepticus (EaSiBUSSEs)
|
9 months
|
Identification of new genetic pathways associated to dysimmune encephalitis and status
Time Frame: 9 months
|
Genetic biomarkers
|
9 months
|
Identification of new metabolic pathway that may participate in the excitotoxicity observed in status epilepticus or dysimmune encephalitis
Time Frame: 9 months
|
Looking for diagnostic and prognosis biomarkers.
Characterization of the brain cholesterol homeostasis with UPLC-MS/MS method and enzymatic assays.
Evaluation of new biomarkers (proteins, lipids, genes).
|
9 months
|
Collaborators and Investigators
Investigators
- Principal Investigator: Vincent NAVARRO, Pr, Hôpital Pitié Salpêtrière - Assitance Publique Hôpitaux de Paris
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- APHP200306
- 2020-A00053-36 (Other Identifier: ANSM)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
- ICF
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Status Epilepticus
-
Sohag UniversityCompletedStatus Epilepticus | Generalized Convulsive Status Epilepticus | Status Epilepticus, Generalized | Status Epilepticus, Generalized ConvulsiveEgypt
-
Marinus PharmaceuticalsCompletedEpilepsy | Status Epilepticus | Convulsive Status EPILEPTICUS | Non Convulsive Status EpilepticusUnited States
-
University of Southern DenmarkAarhus University Hospital; Copenhagen University Hospital, Denmark; University...RecruitingNon-Convulsive Status EpilepticusDenmark
-
Hospital Universitari de BellvitgeHospital Clinic of Barcelona; Institut d'Investigació Biomèdica de Girona Dr... and other collaboratorsCompletedGrand Mal Status Epilepticus | Non-convulsive Status EpilepticusSpain
-
University of Cape TownCompletedPediatric Status EpilepticusSouth Africa
-
University Hospital, MontpellierCompleted
-
University of VirginiaMedical University of South Carolina; National Institute of Neurological Disorders... and other collaboratorsCompletedBenzodiazepine Refractory Status EpilepticusUnited States
-
Xuanwu Hospital, BeijingUnknownGeneralized Convulsive Status EpilepticusChina
-
Assistance Publique - Hôpitaux de ParisCompletedStatus; Epilepticus, Tonic-clonicFrance
-
Xuanwu Hospital, BeijingRecruitingRefractory Status EpilepticusChina