Abstract
Objectives
This study aimed to explore differences in clinical features and prognosis among patients with varied myeloperoxidase (MPO) antineutrophil cytoplasmic antibody-associated vasculitis (MPO-AAV) associated lung diseases.
Methods
Patients with MPO-AAV-associated lung diseases were enrolled in this retrospective cohort study at a single center. Clinical features and laboratory data at the time of diagnosis were compared among patients with various lung disease patterns. Kaplan–Meier and Cox regression analyses were performed to analyze overall survival.
Results
A total of 155 patients were finally included and categorized into five groups, as follows: 72 had a usual interstitial pneumonia (UIP) pattern, 40 had non-UIP interstitial pneumonia, 18 had bronchiectasis (BR), 13 had necrotizing granuloma (NG), and 12 had diffuse alveolar hemorrhage (DAH). Among the five groups, patients with DAH had higher dyspnea and hemoptysis frequencies, lower PaO2/FiO2 levels, elevated C-reactive protein levels, and the poorest prognosis. The overall survival (OS) in the DAH group (median OS: 3.2 months) was significantly poorer than that in the NG group (median OS: not reached, log rank P < 0.001), the BR group (median OS: not reached, log rank P < 0.001), and the non-UIP IP group (median OS: 61.1 months, log rank P = 0.001). The UIP group had significantly more ex-smokers than the other groups (P < 0.001) and the second poorest survival (median OS: 39.1 months). The NG group tended to have female predominance, a higher incidence of ENT involvement, less severe renal involvement, and the best survival. After adjusting for multi-model Cox regression analysis, DAH and UIP (hazard ratio: 19.301 and 9.940, respectively, compared with NG) were independent predictors of all-cause mortality.
Conclusions
Various patterns of lung disease-associated MPO-AAV may potentially predict patient survival.
Key Point • The present study described the clinical and prognostic features of various lung diseases-associated MPO-AAV, indicating the potential prediction for the survival of MPO-AAV patients. |
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Data availability
The data used and analyzed in this study is included in the article or is available from the corresponding and first authors on reasonable request.
Code availability
Not applicable.
Abbreviations
- AAV :
-
Antineutrophil cytoplasmic antibodies associated vasculitis
- AE-UIP :
-
Acute exacerbation of usual interstitial pneumonia
- Alb :
-
Albumin
- ANCA :
-
Antineutrophil cytoplasmic antibodies
- BR :
-
Bronchiectasis
- BVAS :
-
Birmingham Vasculitis Activity Score
- C3 :
-
Complement 3
- C4 :
-
Complement 4
- CHCC2012 :
-
2012 Revised International Chapel Hill Consensus Conference Nomenclature of Vasculitides
- CKD :
-
Chronic kidney disease
- CPFE :
-
Combined pulmonary fibrosis and emphysema
- CRP :
-
C-reactive protein
- CTDs :
-
Connective tissue diseases
- DAH :
-
Diffuse alveolar hemorrhage
- eGFR :
-
Estimated glomerular filtration rate
- EGPA :
-
Eosinophilic granulomatosis with polyangiitis
- ELISA :
-
Enzyme-linked immunosorbent assays
- EMA :
-
European Medicines Agency
- ENT :
-
Ear, nose, and throat
- GPA :
-
Granulomatosis with polyangiitis
- HRCT :
-
High-resolution computed tomography
- HRs :
-
Hazard ratios
- IgG :
-
Immunoglobulin G
- IIPs :
-
Idiopathic interstitial pneumonias
- ILDs :
-
Interstitial lung diseases
- IP :
-
Interstitial pneumonia
- IPF :
-
Idiopathic pulmonary fibrosis
- IQR :
-
Interquartile ranges
- MPA :
-
Microscopic polyangiitis
- MPO :
-
Myeloperoxidase
- NETs :
-
Neutrophil extracellular traps
- NG :
-
Necrotizing granuloma
- NSIP :
-
Nonspecific interstitial pneumonia
- OP :
-
Organic pneumonia
- OS :
-
Overall survival
- PR3 :
-
Proteinase 3
- RA :
-
Rheumatoid arthritis
- Scr :
-
Serum creatinine
- UIP :
-
Usual interstitial pneumonia
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Acknowledgements
We thank all patients and investigators who were involved in this study. We express our thanks to Miss Moyang Xu of University of Michigan—Ann Arbor for polishing language and grammar of the manuscript.
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S Yang was responsible for completing the analysis of data and writing. D Chai, Y Li, and Jing Wang performed all data collection. X Zhan and Y Wang contributed to the follow-up. L Zhang and Q Ye evaluated the chest images. Q Ye also contributed as primary investigator and was responsible for designing the study, recruiting the patients and writing the manuscript. All authors have read and approved the final manuscript.
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Yang, S., Chai, D., Li, Y. et al. Patterns of lung diseases predict survival in patients with MPO-ANCA-associated vasculitis: a single-center retrospective study. Clin Rheumatol 41, 783–793 (2022). https://doi.org/10.1007/s10067-021-05964-5
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DOI: https://doi.org/10.1007/s10067-021-05964-5