ArticleJournal of neurology2021
Impact of comorbid Sjögren syndrome in anti-aquaporin-4 antibody-positive neuromyelitis optica spectrum disorders.
Article in Journal of neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 3 of them syntheses that pooled it.
What it found
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
25 citing papers in PubMed, 3 syntheses or guidelines pooled it, 43 citations in OpenAlex.
- Beyond anti-SSA and anti-SSB. The clinical significance of new antibodies in the diagnosis of Sjögren disease.Rheumatology international · 2026Pooled it
- Recommendations on neurologic, cognitive, and psychiatric manifestations in patients with Sjögren's disease by the Brazilian Society of Rheumatology.Advances in rheumatology (London, England) · 2025Guideline
- Pregnancy-Related Attack in Neuromyelitis Optica Spectrum Disorder With AQP4-IgG: A Single-Center Study and Meta-Analysis.Frontiers in immunology · 2021Pooled it
- TRIM21 autoantibodies are associated with blood-brain barrier dysfunction in a subgroup of neuromyelitis optica spectrum disorder.Acta neuropathologica communications · 2026Article
- From the Optic Neuritis Treatment Trial to Antibody-Mediated Optic Neuritis: Four Decades of Progress and Unanswered Questions.Biomedicines · 2026Review
- Comparison of clinical and laboratory characteristics of neuromyelitis optica spectrum disorder with or without anti-connective tissue antibodies: an 18-month cohort follow-up.Frontiers in immunology · 2026Article
- Dissecting NMOSD pathogenesis through animal models: a mechanism-oriented systems perspective.Frontiers in immunology · 2026Review
- Non-Conventional and Emerging Autoantibodies in Sjögren's Disease.Journal of inflammation research · 2026Review
- Comorbidities Are Associated With Unfavorable Outcome in Aquaporin-4 Antibody Positive Neuromyelitis Optica Spectrum Disorders and Myelin Oligodendrocyte Glycoprotein Antibody-Associated Disease: Exploratory Study From the CROCTINO Cohort.European journal of neurology · 2025Article
- The Kappa Free Light Chains Index and Central Vein Sign: Two New Biomarkers for Multiple Sclerosis Diagnosis.Neurology and therapy · 2025Review
- Concomitant Sjögren's disease in patients with NMOSD: impacts on neurologic disease severity and recurrence.Arthritis research & therapy · 2025Article
- A Chinese girl with neuromyelitis optica spectrum disorder coexisting with primary Sjogren's syndrome: a case report and literature review.Frontiers in immunology · 2025Review
- Article
- Clinical features and prognosis of NMOSD patients with positive autoimmune antibodies.Frontiers in neurology · 2025Article
- Article
- Protein-A immunoadsorption combined with immunosuppressive treatment in refractory primary Sjögren's syndrome coexisting with NMOSD: a case report and literature review.Frontiers in immunology · 2024Review
- Sjogren's syndrome: a neurological perspective.Arquivos de neuro-psiquiatria · 2023Review
- Neuromyelitis Optica: Pathogenesis Overlap with Other Autoimmune Diseases.Current allergy and asthma reports · 2023Review
- Sjögren's syndrome with and without neurological involvement.Journal of neurology · 2023Article
- White blood cell count profiles in anti-aquaporin-4 antibody seropositive neuromyelitis optica spectrum disorder and anti-myelin oligodendrocyte glycoprotein antibody-associated disease.Scientific reports · 2023Article
Corrections and comments
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Authors and funding
11 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundNeuromyelitis optica spectrum disorders (NMOSD) are autoimmune neurological diseases of the central nervous system, which are characterized by the presence of serum anti-aquaporin-4 autoantibodies (AQP4-IgG). An association between Sjögren syndrome (SjS) and AQP4-IgG-positive NMOSD has been proposed, but the rate of coexistence has not been determined.
methodsIn this study, 4,447 patients suspected of having NMOSD with acute neurological episodes were evaluated for the positivity of serum AQP4-IgG, serum SS-A/Ro antibody, and the presence of SjS-related symptoms (dry eye, dry mouth).
resultsOf the 4,447 patients, 1,651 were positive for serum AQP4-IgG, and the remaining 2,796 were negative. A significantly higher proportion of AQP4-IgG-positive patients were positive for serum anti-SSA/Ro antibody (26.3 vs. 4.5%; p < 0.0001) and anti-SSB/La antibody (7.2 vs. 1.2%; p < 0.0001) and had dry eye (9.1 vs .4.9%; p < 0.0001) and dry mouth symptoms (8.9 vs. 3.7%; p < 0.0001). More than 80% of the patients with SjS with acute neurological events such as myelitis or optic neuritis were AQP4-IgG positive. AQ4-IgG-positive patients with comorbid SjS showed a higher female rate (97.1 vs. 89.0%; p = 0.0062), a higher positivity rate for oligoclonal bands (15.4 vs. 7.5%; p = 0.029), and a higher relapse frequency (p = 0.027) than AQP4-IgG-positive patients without comorbid SjS.
conclusionsThe prevalence of SjS is higher among AQP4-IgG-positive than AQP4-IgG-negative patients, with the potential prevalence of 10-20% at the diagnosis of AQP4-IgG-positive NMOSD. Comorbid SjS is more prevalent in females, and it has a higher relapse frequency among AQP4-IgG-positive patients.
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