1. Pediatric Neurology Departement, Assistance Publique des Hôpitaux de Paris, Hôpitaux Universitaires Paris‐Saclay, Bicêtre Hospital, and Paris‐Saclay University Le Kremlin‐Bicêtre France
2. Immunology‐Immunopathology‐Immunotherapy (i3) Sorbonne University INSERM Paris France
3. Pediatric Neurology Department, Assistance Publique des Hôpitaux de Marseille, Hôpital Universitaire Marseille France
4. Clinical Immunology Laboratory, Assistance Publique des Hôpitaux de Paris, Hôpitaux Universitaires Paris‐Saclay, Bicêtre Hospital, and Paris‐Saclay University Le Kremlin‐Bicêtre France
5. UTCBS, UMR8258 CNRS‐U1267 INSERM, Faculté de Pharmacie de Paris Université de Paris
6. Pediatric Neurology Department, CIC 0005 University Children Hospital Bordeaux
7. Interdisciplinary Institute for Neurosciences, CNRS UMR 5297
8. Pediatric Neurology Department Purpan University Hospital Toulouse France
9. French Reference Center on autoimmune encephalitis, Hospices Civils de Lyon, Institut NeuroMyoGene, Inserm U1217/CNRS UMR 5310, Université de Lyon Université Claude Bernard Lyon 1 Lyon France
10. National Referral Center for rare inflammatory brain and spinal diseases Le Kremlin‐Bicêtre France