4.2 Article

Incidence and predictors of interstitial lung disease (ILD) in Thai patients with early systemic sclerosis: Inception cohort study

期刊

MODERN RHEUMATOLOGY
卷 26, 期 4, 页码 588-593

出版社

SPRINGER
DOI: 10.3109/14397595.2015.1115455

关键词

HRCT; Incidence; Interstitial lung disease; Predictors; Systemic sclerosis

资金

  1. Chiang Mai University Endowment Fund, Faculty of Medicine, Chiang Mai University

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Objectives: To determine and compare the prevalence of interstitial lung disease (ILD), the severity of high-resolution computed tomography (HRCT) score and incidence rate (IR) of ILD between the two subsets of early-SSc (systemic sclerosis) patients. We also determined the factors associated with ILD.Methods: We used an inception cohort of early-SSc patients seen between January 2010 and June 2014. All patients underwent HRCT at study entry and annually thereafter.Results: One hundred and thirteen patients (66 females and 89 diffuse cutaneous SSc [dcSSc]) with a meanSD age of 53.4 +/- 8.4 years and mean disease duration of 12.9 +/- 10.3 months at cohort entry were enrolled. At enrollment, patients with dcSSc had a higher prevalence of ILD (78.7% vs. 45.8%, p=0.002), and a higher total HRCT score (10.3 +/- 9.5 vs. 4.4 +/- 5.6, p=0.001) compared with limited cutaneous SSc (lcSSc). DcSSc patients had a higher IR of ILD than lcSSc patients (58.8 vs.17.3 per 100 person-years, p<0.001). Univariable analysis revealed that male gender, presence of anti-Scl 70 and absent anti-centromere antibody was significant predictors of ILD. In Cox-regression analysis, a positive anti-centromere [hazard ratio (HR) 0.09 95% confidence interval (95% CI 0.01-0.73)] was a protective factor.Conclusions: DcSSc patients had more severe HRCT scores and higher IR of ILD compared with lcSSc patients. Male gender, presence of anti-Scl 70, and absent anti-centromere antibody predicted the future development of ILD in early-SSc patients.

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