ArticleRMD open2025
Accrual of thromboembolic events and antiphospholipid syndrome in new-onset systemic lupus erythematosus: a population-based inception cohort study.
Article in RMD open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Thrombomodulin Shapes Thrombo-Inflammatory Interactions in Lupus Nephritis.Scandinavian journal of immunology · 2026Article
- Occurrence of venous thromboembolism in SLE: findings from a nationwide cohort and a clinical cohort in Sweden.Lupus science & medicine · 2026Article
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Authors and funding
13 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThis population-based study aimed to determine timing and incidence of arterial and venous thromboembolic events (TE) and antiphospholipid syndrome (APS) relative to systemic lupus erythematosus (SLE) onset and assess relationships between TE, APS and anti-phospholipid antibodies (aPL) during follow-up.
methodsWe included all medical-record confirmed new-onset SLE patients in Southeast Norway (population 2.9 million) 2000-2017 who fulfilled the 2019 European Alliance of Rheumatology Associations/American College of Rheumatology classification criteria. APS was defined by the 2006 Sydney classification criteria, and aPL positivity was determined following international guidelines. Key outcomes were APS, TE and death. We estimated outcome-free survival using Kaplan-Meier methods.
resultsAmong 700 new-onset SLE patients followed for a mean of 8 years (SD 5.0), 13% (89/700) experienced a new TE. TE incidence peaked at 59 per 100 person-years (95% CI 38 to 87) in the first year of SLE among aPL positive patients diagnosed with APS, falling to 12 (95% CI 6.2 to 21) in the subsequent 4 years. In patients without APS, corresponding TE incidences were 2.6 (95% CI 1.4 to 4.3) and 0.9 (95% CI 0.5 to 1.4), respectively. The lowest TE incidence was in aPL-negative patients aged <50 years, with 1-year TE-free survival of 0.99 (95% CI 0.97 to 1.0). Beyond the first year, TE-free survival rates did not differ between SLE patients positive and negative for aPL. Standardised mortality rate in patients with and without APS was 4.7 (95% CI 1.8 to 10.7 and 1.7 (95% CI 1.2 to 2.3).
conclusionsThis population-level study reveals high risk of TE, particularly for aPL positive patients around the time of SLE diagnosis. The elevated TE risk requires attention and early preventive strategies in newly diagnosed SLE.
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