ArticleLupus2026
Neutralizing autoantibodies against interferon alpha in systemic lupus erythematosus: Prevalence, age of onset, and clinical associations.
Article in Lupus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
ObjectiveType I interferons (IFN) drive systemic lupus erythematosus (SLE) pathogenesis. Some patients develop neutralizing IFN autoantibodies (anti-IFN ab), which theoretically could modify disease activity. We aimed to determine the prevalence of anti-IFN ab in patients with SLE, identify the age and when during the disease course of anti-IFN ab emerge, and assess their association with organ damage.MethodsThis cross-sectional study included 173 SLE patients from the Lund Lupus Cohort. Samples taken at routine outpatient visits were analyzed for anti-IFN ab using ELISA, and positive samples were tested for IFN neutralizing capacity with a gene-reporter assay. Longitudinal samples were analyzed to determine the time-point and age of first positive sample. Demographic and clinical data were obtained from research registries.ResultsEighteen (10.4%) patients were positive for anti-IFN ab by ELISA. Among these, antibodies from nine patients (5.2%) displayed IFN neutralizing capacity. No statistically significant differences were detected between patients positive for neutralizing antibodies and antibody-negative patients with respect to demography, organ damage or ACR classification criteria. The group with neutralizing antibodies were slightly older (median age 59 vs 45 years, p = .14) and had a higher proportion of renal involvement (67% vs 33%, p = .088). Longitudinal analysis of samples from patients with neutralizing anti-IFN ab revealed two age-related patterns: late-onset (≥65 years,
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