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Epidemiology of interstitial lung disease in systemic lupus erythematosus in France: A nation‐wide population‐based study over 10 years

Abstract : Background and objective: Data regarding interstitial lung disease (ILD) in the setting of systemic lupus erythematosus (SLE) are limited. We used a nationwide database to determine the incidence and the prevalence of ILD in SLE. Methods: Characteristics of all SLE inpatients admitted between 2011 and 2012 in France were analysed through the French medico-administrative database. Features associated with the presence of ILD were studied. Cox hazard model was used to measure the impact of ILD on survival from the first stay to 2020. The incidence of ILD in SLE was estimated by analysing the onset of ILD from 2013 to 2020 in SLE patients who had no evidence of ILD in 2013. Results: Between 2011 and 2012, 10,460 SLE patients had at least one hospital stay and could be traced until 2020. Among them, 134 (1.2%) had an ILD diagnosed at baseline. The frequency of ILD in SLE was higher in patients who had an associated autoimmune disease such as Sjögren's syndrome or systemic sclerosis (29.9% vs. 5.9%, p < 0.0001). ILD was associated with an increased risk of death in SLE in the multivariable analysis (hazard ratio [95% CI] 1.992 [1.420–2.794]; p < 0.0001). Among the 31,029 SLE patients with no evidence of ILD at baseline, ILD occurred in 795 (2.6%) between 2013 and 2020. The incidence rate of ILD in SLE was 10.26 for 1000 patient-years [95% CI: 10.24–10.28]. Conclusion: In SLE, ILD is exceedingly rare, often associated with another systemic autoimmune disorder and appears as a major risk factor for death. © 2022 Asian Pacific Society of Respirology.
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Submitted on : Wednesday, June 1, 2022 - 4:39:16 PM
Last modification on : Friday, June 3, 2022 - 3:12:54 AM

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Arthur Mageau, Raphaël Borie, Bruno Crestani, Jean‐françois Timsit, Thomas Papo, et al.. Epidemiology of interstitial lung disease in systemic lupus erythematosus in France: A nation‐wide population‐based study over 10 years. Respirology, Wiley, 2022, ⟨10.1111/resp.14268⟩. ⟨hal-03684862⟩

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