PMID- 38142756 OWN - NLM STAT- MEDLINE DCOM- 20240108 LR - 20240116 IS - 1532-3064 (Electronic) IS - 0954-6111 (Linking) VI - 221 DP - 2024 Jan TI - Characteristics and risk factors of interstitial pneumonia with autoimmune features. PG - 107500 LID - S0954-6111(23)00388-8 [pii] LID - 10.1016/j.rmed.2023.107500 [doi] AB - BACKGROUND: Interstitial pneumonia with autoimmune features (IPAF) has features of connective tissue disease-associated interstitial lung disease (CTD-ILD), but without meeting criteria for a specific CTD. We compared baseline characteristics, survival, and response to treatment of IPAF to both CTD-ILD and unclassifiable ILD. METHODS: Measurements were extracted from a prospective registry. Baseline features and survival were compared in IPAF against both CTD-ILD and unclassifiable ILD. Linear trajectory of lung function decline (%-predicted forced vital capacity [FVC%] and diffusion capacity of the lung for carbon monoxide [DLCO%]) before and after initiation of mycophenolate or azathioprine were compared in IPAF against both CTD-ILD and unclassifiable ILD using linear mixed models. RESULTS: Compared to CTD-ILD (n = 1240), patients with IPAF (n = 128) were older, more frequently male, and had greater smoking history. Compared to unclassifiable ILD (n = 665), patients with IPAF were younger, more frequently female, and had worse baseline lung function. IPAF had higher mortality compared to CTD-ILD and similar risk of mortality compared to unclassifiable ILD. Mycophenolate initiation was associated with stabilization of FVC% and DLCO% in all ILD subtypes except for FVC% in patients with IPAF, and azathioprine initiation with stabilization of FVC% and DLCO% in all ILD subtypes except for FVC% decline in IPAF and DLCO% decline in CTD-ILD. CONCLUSION: Patients with IPAF had worse survival compared to those with CTD-ILD and similar mortality to unclassifiable ILD, with treatment being associated with stabilization in lung function in all three ILDs. It is uncertain whether IPAF should be considered a distinct ILD diagnostic subgroup. CI - Copyright (c) 2024 Elsevier Ltd. All rights reserved. FAU - Vahidy, Sana AU - Vahidy S AD - Department of Medicine, University of British Columbia, Vancouver, BC, Canada; Centre for Heart Lung Innovation, St. Paul's Hospital, Vancouver, BC, Canada. FAU - Agyeman, Jonathan AU - Agyeman J AD - Department of Statistics, University of British Columbia, Vancouver, BC, Canada. FAU - Zheng, Boyang AU - Zheng B AD - Department of Medicine, University of British Columbia, Vancouver, BC, Canada; Division of Rheumatology, McGill University, Montreal, QC, Canada. FAU - Donohoe, Kathryn AU - Donohoe K AD - Department of Medicine, University of British Columbia, Vancouver, BC, Canada. FAU - Hambly, Nathan AU - Hambly N AD - Department of Medicine, McMaster University, Hamilton, ON, Canada. FAU - Johannson, Kerri A AU - Johannson KA AD - Department of Medicine, University of Calgary, Calgary, AB, Canada. FAU - Assayag, Deborah AU - Assayag D AD - Department of Medicine, McGill University, Montreal, QC, Canada. FAU - Fisher, Jolene H AU - Fisher JH AD - Department of Medicine, University of Toronto, Toronto, ON, Canada. FAU - Manganas, Helene AU - Manganas H AD - Department of Medicine, Universite de Montreal, Montreal, QC, Canada. FAU - Marcoux, Veronica AU - Marcoux V AD - Department of Medicine, University of Saskatchewan, Saskatoon, SK, Canada. FAU - Khalil, Nasreen AU - Khalil N AD - Department of Medicine, University of British Columbia, Vancouver, BC, Canada. FAU - Kolb, Martin AU - Kolb M AD - Department of Medicine, McMaster University, Hamilton, ON, Canada. FAU - Ryerson, Christopher J AU - Ryerson CJ AD - Department of Medicine, University of British Columbia, Vancouver, BC, Canada; Centre for Heart Lung Innovation, St. Paul's Hospital, Vancouver, BC, Canada. Electronic address: chris.ryerson@hli.ubc.ca. CN - CARE-PF Investigators FAU - Wong, Alyson W AU - Wong AW AD - Department of Medicine, University of British Columbia, Vancouver, BC, Canada; Centre for Heart Lung Innovation, St. Paul's Hospital, Vancouver, BC, Canada. FAU - Lok, Stacey AU - Lok S AD - Department of Medicine, University of Saskatchewan, Saskatoon, SK, Canada. FAU - Morisset, Julie AU - Morisset J AD - Department of Medicine, Universite de Montreal, Montreal, QC, Canada. FAU - Fell, Charlene D AU - Fell CD AD - Department of Medicine, University of Calgary, Calgary, AB, Canada. FAU - Shapera, Shane AU - Shapera S AD - Department of Medicine, University of Toronto, Toronto, ON, Canada. FAU - Gershon, Andrea S AU - Gershon AS AD - Department of Medicine, University of Toronto, Toronto, ON, Canada. FAU - Cox, Gerard AU - Cox G AD - Department of Medicine, McMaster University, Hamilton, ON, Canada. FAU - Halayko, Andrew J AU - Halayko AJ AD - Department of Medicine, University of Manitoba, Winnipeg, MB, Canada. FAU - Sadatsafavi, Mohsen AU - Sadatsafavi M AD - Phamaceutical Sciences, University of British Columbia, Vancouver, BC, Canada. FAU - Wilcox, Pearce G AU - Wilcox PG AD - Department of Medicine, University of British Columbia, Vancouver, BC, Canada. FAU - To, Teresa AU - To T AD - Department of Medicine, University of Toronto, Toronto, ON, Canada. LA - eng PT - Journal Article DEP - 20231222 PL - England TA - Respir Med JT - Respiratory medicine JID - 8908438 RN - MRK240IY2L (Azathioprine) RN - 0 (Immunosuppressive Agents) SB - IM MH - Humans MH - Male MH - Female MH - Azathioprine/therapeutic use MH - *Lung Diseases, Interstitial/complications/drug therapy MH - Lung MH - *Connective Tissue Diseases/diagnosis MH - Immunosuppressive Agents/therapeutic use MH - Risk Factors OTO - NOTNLM OT - Connective tissue disease OT - Connective tissue disease interstitial lung disease OT - Interstitial lung disease OT - Interstitial pneumonia with autoimmune features OT - Unclassifiable interstitial lung disease COIS- Declaration of competing interest CJR, NK, KAJ, DA, HM, JF, MK, NH, SV report personal fees from Boehringer Ingelheim. Conflict of interest: SV reports no conflicts of interest relevant to this manuscript. Conflict of interest: JA reports no conflicts of interest relevant to this manuscript. Conflict of interest: BZ reports no conflicts of interest relevant to this manuscript. Conflict of interest: K. Donohoe reports no conflicts of interest relevant to this manuscript. Conflict of interest: N. Hambly reports grants from Roche and Janssen; personal fees from Roche, Boehringer Ingelheim, GSK and Janssen. Conflict of interest: K.A. Johannson reports grants from Three Lakes and University Hospital Foundation. K.J. reports consulting fees from Boehringer-Ingelheim, Hoffman-La Roche Ltd, Pliant Therapeutics, Three Lakes, Thyron and Brainomix. Conflict of interest: D. Assayag reports no conflicts of interest relevant to this manuscript. Conflict of interest: J. Fisher reports no conflicts of interest relevant to this manuscript. Conflict of interest: V. Marcoux reports personal fees from Boehringer Ingelheim Canada and Hoffman-La Roche Ltd and Astra Zeneca, grants from the University of Saskatchewan, Boehringer Ingelheim, Astra Zeneca and Hoffman-La Roche. VM reports consulting fees from Boehringer Ingelheim Canada and Hoffman-La Roche Ltd. Conflict of interest: H. Manganas reports grants from Boehringer Ingelheim Canada, Hoffmann La Roche, Galapagos, BMS. Conflict of interest: N. Khalil reports no conflicts of interest relevant to this manuscript. Conflict of interest: M. Kolb reports consulting fees from Boehringer Ingelheim, Roche, Horizon, Cipla Abbvie, Bellerophon, Algernon, CSL Behring, United Therapeutics, LabCorp, Structure Therapeutics and Astra Zeneca. M. Kolb reports grants from Boehringer Ingelheim, United Therapeutics and Structure Therapeutics. M. Kolb reports payment for expert testimony from Roche. Conflict of interest: C.J. Ryerson reports grants from Boehringer Ingelheim; consulting fees from Boehringer Ingelheim, Trevi Therapeutics, Pliant Therapeutics, Astrazeneca and Veracyte. EDAT- 2023/12/25 00:42 MHDA- 2024/01/08 06:43 CRDT- 2023/12/24 19:25 PHST- 2023/08/25 00:00 [received] PHST- 2023/11/13 00:00 [revised] PHST- 2023/12/11 00:00 [accepted] PHST- 2024/01/08 06:43 [medline] PHST- 2023/12/25 00:42 [pubmed] PHST- 2023/12/24 19:25 [entrez] AID - S0954-6111(23)00388-8 [pii] AID - 10.1016/j.rmed.2023.107500 [doi] PST - ppublish SO - Respir Med. 2024 Jan;221:107500. doi: 10.1016/j.rmed.2023.107500. Epub 2023 Dec 22.