Clinical features which predict neuronal surface autoantibodies in new-onset focal epilepsy: implications for immunotherapies.

Journal of Neurology, Neurosurgery, and Psychiatry
Ronan N McGintySarosh R Irani

Abstract

To generate a score which clinically identifies surface-directed autoantibodies in adults with new-onset focal epilepsy, and evaluate the value of immunotherapy in this clinical setting. Prospective clinical and autoantibody evaluations in a cohort of 219 consecutive patients with new-onset focal epilepsy. 10.5% (23/219) of people with new-onset focal epilepsy had detectable serum autoantibodies to known or novel cell surface antigenic targets. 9/23 with autoantibodies were diagnosed with encephalitis, by contrast to 0/196 without autoantibodies (p<0.0001). Multivariate analysis identified six features which predicted autoantibody positivity (area under the curve=0.83): age ≥54 years, ictal piloerection, lowered self-reported mood, reduced attention, MRI limbic system changes and the absence of conventional epilepsy risk factors. 11/14 (79%) patients with detectable autoantibodies, but without encephalitis, showed excellent long-term outcomes (modified Rankin Score=0) despite no immunotherapy. These outcomes were superior to those of immunotherapy-treated patients with confirmed autoantibody-mediated encephalitis (p<0.05). Seizure semiology, cognitive and mood phenotypes, alongside inflammatory investigation findings, aid the i...Continue Reading

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Citations

Jan 7, 2021·Journal of Neurology, Neurosurgery, and Psychiatry·Stephan Rüegg
Feb 16, 2021·Frontiers in Psychiatry·Niels Hansen, Charles Timäus
Apr 4, 2021·Brain Sciences·Pablo Cabezudo-GarcíaPedro J Serrano-Castro
May 7, 2021·Journal of Neuroimaging : Official Journal of the American Society of Neuroimaging·Neus Mongay-OchoaMercè Falip
Jun 11, 2021·Practical Neurology·Christopher E UySarosh R Irani
Jun 22, 2021·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Ronan N McGinty, Andrew J Larner
Aug 7, 2021·Mayo Clinic Proceedings·Baibing ChenAnteneh M Feyissa
Sep 14, 2021·JAMA Neurology·Claude SteriadeJacqueline French

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