Clinical trial · Observational
CASPR2 Encephalitis Initial Symptoms
Defining the Initial Clinical Symptoms and Characterizing Those Leading to the Discovery of CASPR2
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Auto-immune encephalitides involve auto-antibodies targeting the central nervous system, and particularly the synapse and its structure, such as protein CASPR2. CASPR2 antibody-associated auto-immune encephalitides lead to an inflammation of the limbic system and generate focal temporal seizures and cognitive impairment. Most patients are initially hospitalized because of the temporal seizures (Joubert et al., JAMA Neurology 2016). However, many already show at that time cognitive impairment, which has failed to elicit the appropriate investigations, therefore delaying the diagnosis. The study will hence investigate precisely the initial, sometimes neglected, clinical symptoms and those leading to the diagnosis, in the cohort of patients suffering from a CASPR2 antibody-associated encephalitis, from the French reference center on paraneoplastic neurological diseases and autoimmune encephalitis. This way, the study aims to delineate the symptoms that should trigger suspicions of a CASPR2 antibody-associated encephalitis
Conditions
Conditions (3)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| CASPR2-Antibody | — | UNRESOLVED | — |
| Encephalitis Autoimmune | — | UNRESOLVED | — |
| Paraneoplastic Syndromes | — | UNRESOLVED | — |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| CASPR2 encephalitis | Other | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- label
- CASPR2 encephalitis
- description
- Cohort of patients with a CASPR2 antibody-associated auto-immune encephalitis.
- interventionNames
- Other: CASPR2 encephalitis
Primary outcomes (1)
- measure
- Initial cognitive impairment or clinical presentation of first epileptic seizures.
- timeFrame
- 8 months
- description
- The retained information will depend on the very first declared symptom: if the patient first showed focal seizures, we will precise the clinical presentation of this seizure. On the other hand, if the patient first showed cognitive symptoms, we will best define this impairment.
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * Positive CASPR2-Ab in serum and/or CSF tested by immunohistochemistry on mouse brain slices and confirmed by cell-based assay (CBA) of HEK293 cells expressing CASPR2. * Diagnosis and follow-up in France * From 18 to unlimited age Exclusion Criteria: * Patients CASPR2-IgG negative in serum and CSF * Foreign follow-up
References
Publications (0)
Data not yet available