Researchers Uncover Risk Factors for Interstitial Lung Disease in Early Rheumatoid Arthritis

Strategic Insights -

A recent study published in the Lancet Rheumatology has shed light on the prevalence and risk factors associated with interstitial lung disease (ILD) in patients with early rheumatoid arthritis (RA). The research, conducted by a team of experts from Harvard Medical School, has provided valuable insights into the identification and management of ILD in this patient population.

Key Takeaways:

  • The study analyzed a cohort of 172 patients with early RA, finding that 11% had ILD on high-resolution CT (HRCT) chest imaging.
  • Factors associated with ILD included moderate or high RA disease activity, as determined by the Disease Activity Score using 28 joints with erythrocyte sedimentation rate (DAS28-ESR), and age 60 years or older.
  • The research team proposed a four-factor risk score for identifying patients at high risk of ILD, which included factors such as RA duration, anti-cyclic citrullinated peptide (CCP) positivity, and rheumatoid factor positivity.
  • The study validated existing screening strategies for ILD, including the American College of Rheumatology (ACR) and American College of Chest Physicians (AC-CP) criteria, and proposed new criteria based on the ESPOIR cohort.
  • The research concluded that early identification and management of ILD are crucial in preventing disease progression and improving patient outcomes.

Statistics:

  • 172 patients with early RA were included in the study, with 19 (11%) having ILD on HRCT chest imaging.
  • The median RA duration was 0.79 years (IQR 0.36-1.60).
  • 126 (74%) of 171 patients were anti-CCP positive.
  • 116 (68%) of 170 patients were rheumatoid factor positive.
  • The risk of developing ILD increased with increasing RA disease activity, as determined by the DAS28-ESR.
  • The proposed four-factor risk score had a sensitivity of 75% and specificity of 80% for identifying patients at high risk of ILD.

Sources:

  • NewsRx. Researchers from Harvard Medical School Detail Findings in Lung Diseases and Conditions (Risk factors for interstitial lung disease in early rheumatoid arthritis and external validation of screening strategies: a cross-sectional analysis of the ...). Health & Medicine Week. October 31, 2025; p 6526.
  • Elsevier. Lancet Rheumatology. 2025.