ArticleBMC neurology2025
Autoimmune nodopathy with anti-NF186 antibodies following SARS-CoV-2 infection: a case report.
Article in BMC neurology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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6 authors.
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Abstract
backgroundAutoimmune nodopathy is a distinct entity characterized by antibodies targeting nodal/paranodal proteins like neurofascin-186 (NF186), leading to conduction defects and neurological dysfunction. This report highlights a unique case of autoimmune nodopathy with anti-NF186 antibodies following SARS-CoV-2 infection. CASE PRESENTATION: A 47-year-old female developed acute limb numbness and weakness ten days post-COVID-19 diagnosis, which progressed to respiratory muscle paralysis necessitating mechanical ventilation. Initial treatments with intravenous immunoglobulin and steroids were ineffective. Diagnosis of autoimmune nodopathy with anti-NF186 antibodies was confirmed through clinical examination, electromyography (EMG), and serum antibody testing using cell-based assays. The patient showed partial improvement with plasma exchange therapy and achieved stability after rituximab treatment, consistent with the typical treatment response pattern for anti-NF186 autoimmune nodopathy. Notably, re-infection with SARS-CoV-2 did not exacerbate her symptoms, and a gradual recovery of muscle strength was observed over time, with the patient regaining substantial independence in daily activities by November 2023.
conclusionsThis case represents the first reported occurrence of anti-NF186 autoimmune nodopathy following SARS-CoV-2 infection, underscoring the potential link between viral triggers and autoimmune neurological disorders. It emphasizes the importance of testing for specific nodal/paranodal antibodies in post-COVID neurological presentations and highlights the superior efficacy of plasma exchange and B-cell depleting therapies over conventional treatments in managing nodopathies.
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