Observational studyNeurology(R) neuroimmunology & neuroinflammation2025
Risk of Epilepsy and Factors Associated With Time to Seizure Remission in Anti-LGI1 Encephalitis: Long-Term Outcome in 236 Patients.
Observational study in Neurology(R) neuroimmunology & neuroinflammation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Prevalence and clinical correlates of autoimmune and infection-related antibodies in unexplained seizures in western China.BMC immunology · 2026Article
- Current and Future Biomarkers in the Diagnosis of Autoimmune Encephalitis: A Review of Biomarker Detection Techniques and Their Performance.Medicina (Kaunas, Lithuania) · 2026Review
- WONOEP XVII appraisal: The immunopathogenesis of epilepsy.Epilepsia · 2026Review
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38 authors.
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Abstract
BACKGROUND AND
objectivesAutoimmune encephalitis (AIE) with anti-leucine-rich glioma-inactivated 1 (LGI1) antibodies typically manifests with subacute cognitive deficits, seizures, and psychiatric symptoms, mostly in older adults. Immunotherapy (IT) leads to the cessation of seizures in most patients, yet some develop AIE-associated epilepsy (AEAE) and persistent cognitive deficits. The aim of this large multicentric retrospective observational cohort study was to assess long-term outcomes of patients with anti-LGI1 encephalitis regarding seizures and AEAE and to identify associated factors.
methodsWe included patients with anti-LGI1 encephalitis from 3 national referral centers/consortia meeting the following inclusion criteria: (I) definite LGI1 limbic encephalitis (Graus criteria); (II) occurrence of seizures; and (III) follow-up period ≥24 months. We aimed to (1) determine the risk of seizure recurrence (ROSR) on remission, (2) investigate clinical and paraclinical biomarkers for an effect on time to seizure remission using Cox proportional hazard modeling (n = 188), and (3) assess the risk of AEAE and determine associated factors (n = 236).
resultsAEAE was observed in 5.9% (16/271) of the full cohort. Both AEAE (16/16 vs 129/215, DISCUSSION: In conclusion, our results demonstrate that AEAE in anti-LGI1 encephalitis is rare and suggest that the diagnosis of epilepsy is inappropriate in patients reaching seizure remission because of a relatively low ROSR. Accordingly, on seizure remission, the diagnosis of acute symptomatic seizures would be appropriate. Moreover, we validate and quantify the importance of IT for seizure remission and identify biomarkers associated with lower rates of seizure remission. Late remission of seizures and AEAE were associated with persistent cognitive impairment.
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