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Vaisvilas M, Petrosian D, Bagdonaite L, Taluntiene V, Kralikiene V, Daugelaviciene N, Neniskyte U, Kaubrys G, Giedraitiene N. Seroprevalence of neuronal antibodies in diseases mimicking autoimmune encephalitis. Sci Rep 2024; 14:5352. [PMID: 38438516 PMCID: PMC10912693 DOI: 10.1038/s41598-024-55995-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 02/29/2024] [Indexed: 03/06/2024] Open
Abstract
Detection of neuronal antibodies for autoimmune encephalitis and paraneoplastic neurological syndromes relies on commercially available cell-based assays and lineblots. However, lineblots may reveal the presence of neuronal antibodies in patients with various non-autoimmune etiologies. Herein we describe patients with non-autoimmune etiologies (cohort B) and detectable neuronal antibodies and compare them to definite cases of autoimmune encephalitis (cohort A) for differences in clinical data. All patients positive for at least one neuronal antibody were retrospectively evaluated for autoimmune encephalitis and/or paraneoplastic neurological syndrome between 2016 and 2022. 39 cases in cohort B and 23 in cohort A were identified. In cohort B, most common diagnoses were neurodegenerative disorders in 9/39 (23.1%), brain tumors in 6/39 (15.4%) while most common detected antibodies were anti-titin (N10), anti-recoverin (N11), anti-Yo (N8) and all were detected in serum only. Differential aspects between cohort A and B were CSF pleocytosis (14/23 (60.8%) vs 11/35 (31.4%), p = 0.042, respectively), MRI features suggestive of encephalitis (6/23 (26.1%) vs 0 (0%), p = 0.002, respectively) and epilepsy restricted to temporal lobes (14/23 (60.9%) vs 2/30 (6.7%), p = 0.0003, respectively). A large proportion of lineblot results were non-specific when only serum was tested and were frequently found in non-autoimmune neurological conditions.
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Affiliation(s)
- Mantas Vaisvilas
- Clinic of Neurology and Neurosurgery, Faculty of Medicine, Institute of Clinical Medicine, Vilnius University, Vilnius, Lithuania.
- Department of Neurology, Vilnius University Hospital Santaros Klinikos, Santariskiu str. 2, 08661, Vilnius, Lithuania.
| | | | - Loreta Bagdonaite
- Faculty of Medicine, Vilnius University, Vilnius, Lithuania
- Department of Laboratory Medicine, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania
| | - Vera Taluntiene
- Clinic of Neurology and Neurosurgery, Faculty of Medicine, Institute of Clinical Medicine, Vilnius University, Vilnius, Lithuania
| | - Viktorija Kralikiene
- Institute of Biosciences, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Neringa Daugelaviciene
- VU LSC-EMBL Partnership for Genome Editing Technologies, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Urte Neniskyte
- Institute of Biosciences, Life Sciences Center, Vilnius University, Vilnius, Lithuania
- VU LSC-EMBL Partnership for Genome Editing Technologies, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Gintaras Kaubrys
- Clinic of Neurology and Neurosurgery, Faculty of Medicine, Institute of Clinical Medicine, Vilnius University, Vilnius, Lithuania
| | - Natasa Giedraitiene
- Clinic of Neurology and Neurosurgery, Faculty of Medicine, Institute of Clinical Medicine, Vilnius University, Vilnius, Lithuania
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