Global prevalence and associated factors of metabolic syndrome in patients with systemic lupus erythematosus: A systematic review and meta-analysis

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Abstract

Background: Systemic lupus erythematosus (SLE) is characterized by chronic systemic inflammation, frequent corticosteroid exposure, and heightened cardiometabolic vulnerability. Metabolic syndrome (MetS) has become a clinically significant comorbidity among individuals with SLE. We performed an updated systematic review and meta-analysis to better understand the prevalence and identify the factors associated with the occurrence of MetS in SLE.

Methods: PubMed, Scopus, and Web of Science were systematically searched through January 4, 2026 to identify observational studies reporting the prevalence of MetS among individuals with SLE. Random-effects meta-analytic models were applied to calculate pooled prevalence estimates and evaluate the associations with potential risk factors.

Results: The overall pooled prevalence of MetS in patients with SLE was estimated at 0.27 (95% CI: 0.24-0.30). Sex-stratified analyses showed a prevalence of 0.36 (95% CI: 0.25-0.47) in male patients and 0.27 (95% CI: 0.23-0.30) in female patients. Across continents, the highest prevalence was observed in Africa (0.36, 95% CI: 0.30-0.41), followed by South America (0.32, 95% CI: 0.24-0.40), Asia (0.27, 95% CI: 0.22-0.32), Europe (0.23, 95% CI: 0.18-0.28), and North America (0.21, 95% CI: 0.14-0.30). Regarding medication use, hydroxychloroquine was associated with a significantly reduced risk of MetS (OR = 0.66, 95% CI: 0.52-0.83; P < 0.01), whereas cyclophosphamide (OR = 1.39, 95% CI: 1.06-1.81; P = 0.02), azathioprine (OR = 1.25, 95% CI: 1.00-1.55; P = 0.04), and mycophenolate mofetil (OR = 1.13, 95% CI: 1.03-1.23; P = 0.01) were each associated with a significant increased risk of MetS. No significant associations were found for steroids (OR = 1.34, 95% CI: 0.97-1.83; P = 0.07), methotrexate (OR = 1.07, 95% CI: 0.78-1.47; P = 0.84), or cyclosporine use (OR = 1.19, 95% CI: 0.64-2.21; P = 0.33). The analysis also identified several risk factors for MetS in SLE patients. Patients with MetS were older (Hedges' g = 0.47; P < 0.01), had higher BMI (Hedges' g = 0.88; P < 0.01), and higher total cholesterol (Hedges' g = 0.39; P < 0.01) and LDL levels (Hedges' g = 0.41; P < 0.01) than those without MetS.

Conclusion: MetS is prevalent among individuals with SLE and is influenced by demographic, clinical, and treatment-related factors. These findings highlight the need for targeted monitoring and management strategies to reduce the cardiometabolic risk in this population.

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Article

PubMed ID

42712258

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