Journal
ARTHRITIS RESEARCH & THERAPY
Volume 25, Issue 1, Pages -Publisher
BMC
DOI: 10.1186/s13075-023-03024-8
Keywords
Rheumatoid arthritis; Interstitial lung disease; Clinical characteristics; Cohort
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This study established a prospective cohort of rheumatoid arthritis (RA) patients with interstitial lung disease (ILD) and compared their clinical features with RA patients without ILD. The findings showed that factors such as age, gender, and age over 60 years were associated with the presence of ILD in RA patients.
BackgroundTo introduce a prospective cohort for rheumatoid arthritis (RA) patients with interstitial lung disease (ILD) and to identify their clinical features in comparison with RA patients without ILD.MethodsUsing a multidisciplinary collaborative approach, a single-center cohort for RA patients with ILD (RA-ILD) was established in May 2017, and enrolment data from May 2017 to March 2021 were used to compare the clinical features of RA patients without ILD (RA-non ILD). Multivariable logistic regression analysis was used to identify factors associated with ILD in RA patients.ResultsAmong 148 RA-ILD and 410 RA-non ILD patients, participants in the RA-ILD group were older (65.8 +/- 9.9 vs. 58.0 +/- 10.4 years, P < 0.001) and included more males (35.8% vs. 14.6%, P < 0.001) than in the RA-non ILD group. The RA-ILD group had a higher proportion of late-onset RA patients (age >= 60 years) than in the comparator group (43.9% vs. 14.2%, P < 0.001). Multivariable logistic regression analysis showed that higher age at RA onset (OR 1.056, 95% CI 1.021-1.091), higher body mass index (BMI; OR 1.65, 95% CI 1.036-2.629), smoking history (OR 2.484, 95% CI 1.071-5.764), and oral glucocorticoid use (OR 3.562, 95% CI 2.160-5.874) were associated with ILD in RA patients, whereas methotrexate use was less likely to be associated with ILD (OR 0.253, 95% CI 0.155-0.412).ConclusionsHigher age at RA onset, smoking history, and higher BMI were associated with the presence of ILD among RA patients. Oral glucocorticoids were more frequently used whereas methotrexate was less likely to be used in RA-ILD patients.
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