Prognostic and Functional Trajectories in Idiopathic Pulmonary Fibrosis and Systemic Autoimmune Rheumatic Disease–Associated Interstitial Lung Disease: Insights From an Italian Multicenter Cohort

SARD-ILD is associated with higher survival than IPF. Functional trajectories improved in patients with ASyS and DM, in contrast to the decline observed in those with IPF. Prognosis is more strongly influenced by the underlying diagnosis, supporting a diagnosis-centered approach to disease management.