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Research Article: Increased risk of antiphospholipid syndrome in patients with psoriasis: a retrospective cohort study

Date Published: 2025-09-09

Abstract:
Psoriasis is associated with systemic inflammation and immune dysregulation, raising concerns about its potential link to antiphospholipid syndrome (APS). However, evidence on the risk of APS in psoriasis patients remains limited. This retrospective cohort study utilized data from the TriNetX US Collaborative Networks (2002–2022). Propensity score matching (1:1) was performed to balance demographic variables, comorbidities, and medication use between 288,678 psoriasis and non-psoriasis patients. The univariate Cox proportional hazard model and subgroup analyses were used to estimate the hazard ratio for APS. The Kaplan-Meier method was used to plot the cumulative incidence curves. After matching, each cohort included 288,678 patients. Psoriasis patients exhibited significantly higher APS incidence (1,349 cases vs. 673 in controls; HR: 1.71, 95% CI: 1.56–1.88). Psoriatic arthritis (PsA) further amplified risk (HR: 1.91, 95% CI: 1.58–2.31). Subgroup analyses identified elevated APS susceptibility in older adults, females, Black/African American individuals, and those with chronic comorbidities. Psoriasis and psoriatic arthritis are significant risk factors for APS, highlighting the need for targeted screening and management strategies in these populations.

Introduction:
Psoriasis is an inflammatory skin disease mediated by cells and molecules of both the innate and adaptive immune systems ( 1 ). The pathogenesis of psoriasis is complex, including immune response, genetic susceptibility and environmental factors. Psoriasis is a disease more than skin, and it is associated with systemic disorders ( 2 ). Patients with psoriasis are at an increased risk of developing other chronic diseases. These comorbid diseases of psoriasis include psoriatic arthritis, Crohn’s disease, cancer,…

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