Lupus & antiphospholipid syndrome

Intraindividual cognitive function course over time in patients with systemic lupus erythematosus

RMD OpenPublished Prospective cohort study

Authors' conclusion

This study highlights the variable nature of CI in SLE patients, with most exhibiting a stable course over 1 year.

Study context

Population
Adult Systemic Lupus Erythematosus (SLE) patients, University of Toronto Lupus Clinic
Participants
175 patients
Exposure
Persistent-CI vs never-CI
Outcome
Course of CI (ACR Neuropsychological Battery, standardised z-scores in cognitive domains)
Follow-up
1 year
Methodological detailssingle-centre, assessments at baseline, 6 months and 12 months
  • Single-centre
  • Assessments at baseline, 6 months and 12 months

Main finding

As reported in the abstract

CI course over 1 year
Any CI over 1 year
46%

Observational data: associations, not effects.

Further findings

CI severity

Persistent-CI patients exhibited more severe CI compared with fluctuating-CI

Most frequently affected cognitive domains

Learning and memory, simple attention and processing speed, and visual-spatial construction

Factors associated with CI persistence over 1 year

Black race, older age at SLE diagnosis, divorced/separated status at T0 and higher disease-related damage at T0

Original publication

Intraindividual cognitive function course over time in patients with systemic lupus erythematosus. RMD Open. Published 23 December 2025. doi:10.1136/rmdopen-2025-005655

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