Lupus & antiphospholipid syndrome

Association of Elevated Serum S100A8 / A9 Levels and Cognitive Impairment in Patients With Systemic Lupus Erythematosus

Arthritis Care Res (Hoboken)Published Prospective cohort study

Main finding · Serum S100A8/A9 levels (higher in CI)Result — go to the resultr 0.413

Authors' conclusion

In this large cohort of patients with well-characterized SLE, serum S100A8/A9 levels were elevated in those with CI and showed an inverse relationship with cognitive performance across multiple domains. Changes in S100A8/A9 levels corresponded with changes in cognitive status over one year.

Study context

Population
Patients with systemic lupus erythematosus (SLE)
Participants
112 patients
Exposure
SLE with CI vs SLE without CI
  • CIn = 48
Outcome
Serum S100A8/A9 levels in CI vs non-CI
Follow-up
Baseline and one year
Methodological details1-year follow-up
  • 1-year follow-up

Main finding

Serum S100A8/A9 levels (higher in CI) · baseline

r

0.413

P = 0.0007

As reported in the abstract

Observational data: associations, not effects.

Further findings

OutcomeRP value
Serum S100A8/A9 levels (higher in CI) · one year0.359P = 0.0045
CI prevalence at baseline
42.8% · 48

Change in cognitive function after one year

Stable
55%
Improved
31.2%
Worsened
13%

Change in S100A8/A9 by cognitive change · one year

Worsened group showed a significant increase in S100A8/A9 levels
Improved group exhibited a reduction

Original publication

Association of Elevated Serum S100A8 / A9 Levels and Cognitive Impairment in Patients With Systemic Lupus Erythematosus. Arthritis Care Res (Hoboken). Published 11 August 2025. doi:10.1002/acr.25575

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