Across rheumatic diseases

Outcomes in Progressive Pulmonary Fibrosis in Systemic Autoimmune Rheumatic Diseases: Real‐World Data From the Interstitial Lung Disease (ILD) ‐ PRO Registry

Arthritis RheumatolPublished Prospective registry cohort study

Authors' conclusion

In a large prospective multicenter US cohort, SARD-PPF was characterized by advanced physiologic impairment, high treatment burden, and high risk for further progression and death or lung transplant. After accounting for demographic factors and baseline severity, outcomes were broadly similar across SARD diagnoses

Study context

Population
Patients with SARD-associated progressive pulmonary fibrosis (ILD other than idiopathic pulmonary fibrosis, reticulation and traction bronchiectasis on high-resolution CT and/or lung biopsy, PPF criteria met within prior 24 months), ILD-PRO Registry, US
Participants
585 patients
Exposure
SARD subtypes of progressive pulmonary fibrosis
Outcome
Clinical outcomes by SARD subtype
Follow-up
24 months
Methodological detailsmulticentre, US registry, real-world data
  • Multicentre
  • US registry
  • Real-world data

Main finding

As reported in the abstract

ILD progression across SARD subtypes

31.3% to 62.1%

Death or lung transplant across SARD subtypes

9.3% to 37.6%

Observational data: associations, not effects.

Further findings

Baseline characteristics at enrollment

Median FVC, % predicted
64.5%
Median DLCO, % predicted
38.0%
Supplemental oxygen use
39.2%
Receiving immunomodulatory therapy
73.9%
Taking nintedanib
22.6%

Original publication

Outcomes in Progressive Pulmonary Fibrosis in Systemic Autoimmune Rheumatic Diseases: Real‐World Data From the ILD ‐ PRO Registry. Arthritis Rheumatol. Published 4 August 2026. doi:10.1002/art.70283

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