PMID- 37603717 OWN - NLM STAT- Publisher LR - 20230821 IS - 1462-0332 (Electronic) IS - 1462-0324 (Linking) DP - 2023 Aug 21 TI - Performance of GAP and ILD-GAP models in predicting lung transplant or death in interstitial pneumonia with autoimmune features. LID - kead428 [pii] LID - 10.1093/rheumatology/kead428 [doi] AB - OBJECTIVES: To assess the ability of two risk prediction models in interstitial lung disease (ILD) to predict death or lung transplantation in a cohort of patients with interstitial pneumonia with autoimmune features (IPAF). METHODS: We performed a retrospective cohort study of adults with IPAF at an academic medical center. The primary outcome was a composite of lung transplantation or death. We applied the patient data to the previously described GAP and ILD-GAP models to determine the ability of these models to predict the composite outcome. Model discrimination was assessed using the c-index, and model calibration was determined by comparing the incidence ratios of observed versus expected deaths. RESULTS: Ninety-four patients with IPAF were included. Mean (standard deviation) age was 58 (13.5) years and the majority were female (62%). The majority met serologic and morphologic criteria for IPAF (94% and 91%, respectively). The GAP model had a c-index of 0.664 (95% confidence interval [CI] 0.547-0.781), while the ILD-GAP model had a c-index of 0.569 (95% CI 0.440-0.697). In those with GAP stage 1 or GAP stage 2 disease, calibration of the GAP model was satisfactory at 2 and 3 years for the cumulative end point of lung transplantation or death. CONCLUSION: In patients with IPAF, the GAP model performed well as a predictor of lung transplantation or death at 2 years and 3 years from ILD diagnosis in patients with GAP stage 1 and GAP stage 2 disease. CI - (c) The Author(s) 2023. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For permissions, please email: journals.permissions@oup.com. FAU - Allen, Michael R AU - Allen MR AD - Division of Rheumatology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA. FAU - Alevizos, Michail K AU - Alevizos MK AD - Henry Dunant Medical Center, Athens, Greece. FAU - Zhang, David AU - Zhang D AD - Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA. FAU - Bernstein, Elana J AU - Bernstein EJ AUID- ORCID: 0000-0001-5560-6390 AD - Division of Rheumatology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA. LA - eng PT - Journal Article DEP - 20230821 PL - England TA - Rheumatology (Oxford) JT - Rheumatology (Oxford, England) JID - 100883501 SB - IM OTO - NOTNLM OT - GAP OT - interstitial lung disease OT - interstitial pneumonia with autoimmune features OT - risk prediction model EDAT- 2023/08/21 18:42 MHDA- 2023/08/21 18:42 CRDT- 2023/08/21 15:12 PHST- 2022/12/16 00:00 [received] PHST- 2023/07/03 00:00 [revised] PHST- 2023/08/02 00:00 [accepted] PHST- 2023/08/21 18:42 [medline] PHST- 2023/08/21 18:42 [pubmed] PHST- 2023/08/21 15:12 [entrez] AID - 7246760 [pii] AID - 10.1093/rheumatology/kead428 [doi] PST - aheadofprint SO - Rheumatology (Oxford). 2023 Aug 21:kead428. doi: 10.1093/rheumatology/kead428.