Pediatric rheumatology

Elevated serum brain injury markers are associated with disease activity, pro-inflammatory cytokine levels and cognitive dysfunction in adolescents with childhood-onset SLE

Lupus Sci MedPublished Cross-sectional study

Authors' conclusion

Brain injury marker levels were high and associated with disease activity and CD in this cSLE adolescent cohort, suggesting a link between systemic inflammation and clinically under-detected neuronal/glial injury.

Study context

Population
Adolescents (12–17 years) with childhood-onset SLE (median disease duration 10.6 months; one with NPSLE) and healthy controls
Participants
56 vs 43
Exposure
cSLE vs age-matched, sex-matched healthy controls
  • cSLEn = 56
  • Controlsn = 43reference
Outcome
Serum brain injury markers (neurofilament light, GFAP, Tau) and associations with disease features, cytokines and cognitive dysfunction
Methodological detailsage-matched, sex-matched healthy controls, Wilcoxon rank-sum tests, Bonferroni correction
  • Age-matched, sex-matched healthy controls
  • Wilcoxon rank-sum tests
  • Bonferroni correction

Main finding

As reported in the abstract

cSLE
z (glial fibrillar acidic protein (GFAP)) −3.97; P < 0.001
cSLE
z (Tau) −2.10; P = 0.035
cSLE
z (interferon (IFN)-α) −4.80; P < 0.001
cSLE
z (IFN-γ) −2.42; P = 0.015
cSLE
z (IL-6) −3.09; P = 0.002

Observational data: associations, not effects.

Further findings

Severe cognitive dysfunction (≥2 SD from standardised mean)

chi2 6.69 · P = 0.01

OutcomeZP value
Tau levels with vs without severe CD, within cSLEHigher Tau with severe CD−3.94P < 0.001
High-level brain injury markers (>90th percentile) in cSLE
23% · 13 of 56

High-level brain injury markers (>90th percentile) in cSLE

Associated with higher SLEDAI-2K, IL-6 levels and current glucocorticoid (GC) dose

Original publication

Elevated serum brain injury markers are associated with disease activity, pro-inflammatory cytokine levels and cognitive dysfunction in adolescents with childhood-onset SLE. Lupus Sci Med. Published 22 April 2026. doi:10.1136/lupus-2025-001922

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