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Macmurdo MG, Ji X, Pimple P, Olson AL, Milinovich A, Martyn-Dow B, Pande A, Zajichek A, Bauman J, Bender S, Conoscenti C, Sugano D, Kattan MW, Culver DA. Proportion and predictors of FVC decline in patients with interstitial lung disease. Respir Med 2024; 227:107656. [PMID: 38697229 DOI: 10.1016/j.rmed.2024.107656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 04/18/2024] [Accepted: 04/29/2024] [Indexed: 05/04/2024]
Abstract
RATIONALE The proportion of patients who develop progressive pulmonary fibrosis (PPF), along with risk factors for progression remain poorly understood. OBJECTIVES To examine factors associated with an increased risk of developing PPF among patients at a referral center. METHODS We identified patients with a diagnosis of interstitial lung disease (ILD) seen within the Cleveland Clinic Health System. Utilizing a retrospective observational approach we estimated the risk of developing progression by diagnosis group and identified key clinical predictors using the FVC component of both the original progressive fibrotic interstitial lung disease (PFILD) and the proposed PPF (ATS) criteria. RESULTS We identified 5934 patients with a diagnosis of ILD. The cumulative incidence of progression over the 24 months was similar when assessed with the PFILD and PPF criteria (33.1 % and 37.9 % respectively). Of those who met the ATS criteria, 9.5 % did not meet the PFILD criteria. Conversely, 4.3 % of patients who met PFILD thresholds did not achieve the 5 % absolute FVC decline criteria. Significant differences in the rate of progression were seen based on underlying diagnosis. Steroid therapy (HR 1.46, CI 1.31-1.62) was associated with an increased risk of progressive fibrosis by both PFILD and PPF criteria. CONCLUSION Regardless of the definition used, the cumulative incidence of progressive disease is high in patients with ILD in the 24 months following diagnosis. Some differences are seen in the risk of progression when assessed by PFILD and PPF criteria. Further work is needed to identify modifiable risk factors for the development of progressive fibrosis.
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Affiliation(s)
| | - Xinge Ji
- Department of Quantitative Health Sciences, Cleveland Clinic, United States
| | - Pratik Pimple
- Boehringer Ingelheim Pharmaceuticals, Inc, United States
| | - Amy L Olson
- Boehringer Ingelheim Pharmaceuticals, Inc, United States
| | - Alex Milinovich
- Department of Quantitative Health Sciences, Cleveland Clinic, United States
| | - Blaine Martyn-Dow
- Department of Quantitative Health Sciences, Cleveland Clinic, United States
| | - Aman Pande
- Respiratory Institute, Cleveland Clinic, United States
| | - Alex Zajichek
- Department of Quantitative Health Sciences, Cleveland Clinic, United States
| | - Janine Bauman
- Department of Quantitative Health Sciences, Cleveland Clinic, United States
| | - Shaun Bender
- Boehringer Ingelheim Pharmaceuticals, Inc, United States
| | | | - David Sugano
- Department of Quantitative Health Sciences, Cleveland Clinic, United States
| | - Michael W Kattan
- Department of Quantitative Health Sciences, Cleveland Clinic, United States
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Shao C, Xia N, Zhen Y, Zhang X, Yan N, Guo Q. Prognostic significance of natural killer cell depletion in predicting progressive fibrosing interstitial lung disease in idiopathic inflammatory myopathies. Front Immunol 2024; 15:1404828. [PMID: 38745647 PMCID: PMC11091831 DOI: 10.3389/fimmu.2024.1404828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 04/12/2024] [Indexed: 05/16/2024] Open
Abstract
Objectives Interstitial lung disease (ILD) is one of the common extramuscular involvement in idiopathic inflammatory myopathies (IIMs) (1). Several patients develop a progressive fibrosing ILD (PF-ILD) despite conventional treatment, resulting in a progressive deterioration in their quality of life (2). Here, we investigated the clinical and immune characteristics of IIM-ILD and risk factors for PF-ILD in IIM, mainly in anti-melanoma differentiation-associated protein 5 (anti-MDA5+) dermatomyositis (DM) and anti-synthetase syndrome (ASS). Methods Here, a prospective cohort of 156 patients with IIM-ILD were included in the longitudinal analysis and divided into the PF-ILD (n=65) and non-PF-ILD (n=91) groups, and their baseline clinical characteristics were compared. Univariate and multivariate Cox analyses were performed to identify the variables significantly associated with pulmonary fibrosis progression in the total cohort, then anti-MDA5+ DM and ASS groups separately. Results Peripheral blood lymphocyte counts, including T, B, and NK cell counts, were significantly lower in the PF-ILD group than in the non-PF-ILD group. This characteristic is also present in the comparison between patients with anti-MDA5+ DM and ASS. The multivariate Cox regression analysis revealed that age > 43.5 years [HR: 7.653 (95% CI: 2.005-29.204), p = 0.003], absolute NK cell count < 148 cells/μL [HR: 6.277 (95% CI: 1.572-25.067), p = 0.009] and absolute Th cell count < 533.2 cells/μL [HR: 4.703 (95% CI: 1.014-21.821), p = 0.048] were independent predictors of progressive fibrosing during 1-year follow-up for patients with anti-MDA5+ DM, while absolute count of NK cells < 303.3 cells/µL [HR: 19.962 (95% CI: 3.108-128.223), p = 0.002], absolute count of lymphocytes < 1.545×109/L [HR: 9.684 (95% CI: 1.063-88.186), p = 0.044], and ferritin > 259.45 ng/mL [HR: 6 (95% CI: 1.116-32.256), p = 0.037] were independent predictors of PF-ILD for patients with ASS. Conclusions Patients with anti-MDA5+ DM and ASS have independent risk factors for PF-ILD. Lymphocyte depletion (particularly NK cells) was significantly associated with PF-ILD within 1-year of follow-up for IIM-ILD.
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Affiliation(s)
- Chenyi Shao
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Nana Xia
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Zhen
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xueliang Zhang
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ninghui Yan
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiang Guo
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Jiading Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Höppner J, Wollsching-Strobel M, Schumacher F, Windisch W, Berger M. Progressive pulmonary fibrosis in patients with connective tissue disease-associated interstitial lung disease: An explorative study. Arch Rheumatol 2024; 39:46-51. [PMID: 38774704 PMCID: PMC11104760 DOI: 10.46497/archrheumatol.2024.10105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 03/22/2023] [Indexed: 05/24/2024] Open
Abstract
Objectives The aim of this study was to identify differences and similarities between connective tissue disease (CTD) patients with and without progressive pulmonary fibrosis (PPF) by applying the new guidelines. Patients and methods Patient characteristics and disease courses from medical records of 50 CTD-associated Interstitial lung disease (ILD) patients (33 females, 17 males; mean age: 60.1±12.9 years) were longitudinally studied between January 2018 and May 2022. Respiratory involvement in CTD patients was described, and differences in CTD patients who developed PPF compared to those who did not were identified by the 2022 ATS (American Thoracic Society)/ERS (European Respiratory Society)/JRS (Japanese Respiratory Society)/ALAT (Asociación Latinoamericana de Thórax) Guidelines on Idiopathic Pulmonary Fibrosis and Progressive Pulmonary Fibrosis in Adults. Results In the majority (74%) of patients, CTD was diagnosed before ILD onset. Nonspecific interstitial pneumonia was the most common high resolution computer tomography pattern, followed by the usual interstitial pneumonia pattern. On pulmonary function test, 38% had a restrictive pattern at baseline. Patients without PPF tended to have worse lung function at baseline and increased macrophage count in bronchoalveolar lavage than patients with PPF. Conclusion In patients without PPF, disease progression may be missed, resulting in inadequate management. Interdisciplinary management of patients with CTD with the participation of pulmonologists and precise lung function diagnostics is recommended.
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Affiliation(s)
- Jakob Höppner
- (Department of Pneumology, Cologne Merheim Hospital, Kliniken der Stadt Köln gGmbh, Faculty of Health/School of Medicine, Witten/Herdecke University, Cologne, Germany
| | - Maximilian Wollsching-Strobel
- (Department of Pneumology, Cologne Merheim Hospital, Kliniken der Stadt Köln gGmbh, Faculty of Health/School of Medicine, Witten/Herdecke University, Cologne, Germany
| | - Falk Schumacher
- Department of Rheumatology, Krankenhaus Porz Am Rhein, Cologne, Germany
| | - Wolfram Windisch
- (Department of Pneumology, Cologne Merheim Hospital, Kliniken der Stadt Köln gGmbh, Faculty of Health/School of Medicine, Witten/Herdecke University, Cologne, Germany
| | - Melanie Berger
- (Department of Pneumology, Cologne Merheim Hospital, Kliniken der Stadt Köln gGmbh, Faculty of Health/School of Medicine, Witten/Herdecke University, Cologne, Germany
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Cottin V, Valenzuela C. C-reactive protein as a candidate biomarker in fibrotic interstitial lung disease. Respirology 2024; 29:195-198. [PMID: 38296837 DOI: 10.1111/resp.14666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 01/17/2024] [Indexed: 02/02/2024]
Abstract
See related article
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Affiliation(s)
- Vincent Cottin
- Department of Respiratory Medicine, National Reference Centre for Rare Pulmonary Diseases, member of ERN-LUNG, Louis Pradel Hospital, Hospices Civils de Lyon, Lyon, France
- UMR 754, INRAE, Claude Bernard University Lyon 1, Lyon, France
| | - Claudia Valenzuela
- Hospital Universitario de la Princesa, Universidad Autónoma de Madrid, Madrid, Spain
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Stock CJW, Bray WG, Kouranos V, Jacob J, Kokosi M, George PM, Chua F, Wells AU, Sestini P, Renzoni EA. Serum C-reactive protein is associated with earlier mortality across different interstitial lung diseases. Respirology 2024; 29:228-234. [PMID: 37779266 DOI: 10.1111/resp.14609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 09/20/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND AND OBJECTIVE The acute-phase protein C-reactive protein (CRP) is known to be associated with poor outcomes in cancer and cardiovascular disease, but there is limited evidence of its prognostic implications in interstitial lung diseases (ILDs). We therefore set out to test whether baseline serum CRP levels are associated with mortality in four different ILDs. METHODS In this retrospective study, clinically measured CRP levels, as well as baseline demographics and lung function measures, were collected for ILD patients first presenting to the Royal Brompton Hospital between January 2010 and December 2019. Cox regression analysis was used to determine the relationship with 5-year mortality. RESULTS Patients included in the study were: idiopathic pulmonary fibrosis (IPF) n = 422, fibrotic hypersensitivity pneumonitis (fHP) n = 233, rheumatoid arthritis associated ILD (RA-ILD) n = 111 and Systemic Sclerosis associated ILD (SSc-ILD) n = 86. Patients with a recent history of infection were excluded. Higher CRP levels were associated with shorter 5-year survival in all four disease groups on both univariable analyses, and after adjusting for age, gender, smoking history, immunosuppressive therapy and baseline disease severity (IPF: HR (95% CI): 1.3 (1.1-1.5), p = 0.003, fHP: 1.5 (1.2-1.9), p = 0.001, RA-ILD: 1.4 (1.1-1.84), p = 0.01 and SSc-ILD: 2.7 (1.6-4.5), p < 0.001). CONCLUSION Higher CRP levels are independently associated with reduced 5-year survival in IPF, fHP, RA-ILD and SSc-ILD.
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Affiliation(s)
- Carmel J W Stock
- Interstitial Lung Disease Unit, Royal Brompton and Harefield Clinical Group, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Margaret Turner Warwick Centre for Fibrosing Lung Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - William G Bray
- Interstitial Lung Disease Unit, Royal Brompton and Harefield Clinical Group, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Margaret Turner Warwick Centre for Fibrosing Lung Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - Vasilis Kouranos
- Interstitial Lung Disease Unit, Royal Brompton and Harefield Clinical Group, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Margaret Turner Warwick Centre for Fibrosing Lung Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - Joseph Jacob
- Satsuma Lab, Centre for Medical Image Computing, Department of Computer Science, UCL, London, UK
- UCL Respiratory, UCL, London, UK
| | - Maria Kokosi
- Interstitial Lung Disease Unit, Royal Brompton and Harefield Clinical Group, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Margaret Turner Warwick Centre for Fibrosing Lung Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - Peter M George
- Interstitial Lung Disease Unit, Royal Brompton and Harefield Clinical Group, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Margaret Turner Warwick Centre for Fibrosing Lung Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - Felix Chua
- Interstitial Lung Disease Unit, Royal Brompton and Harefield Clinical Group, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Margaret Turner Warwick Centre for Fibrosing Lung Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - Athol U Wells
- Interstitial Lung Disease Unit, Royal Brompton and Harefield Clinical Group, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Margaret Turner Warwick Centre for Fibrosing Lung Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | | | - Elisabetta A Renzoni
- Interstitial Lung Disease Unit, Royal Brompton and Harefield Clinical Group, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Margaret Turner Warwick Centre for Fibrosing Lung Disease, National Heart and Lung Institute, Imperial College London, London, UK
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Taylor MJ, Chitwood CP, Xie Z, Miller HA, van Berkel VH, Fu XA, Frieboes HB, Suliman SA. Disease diagnosis and severity classification in pulmonary fibrosis using carbonyl volatile organic compounds in exhaled breath. Respir Med 2024; 222:107534. [PMID: 38244700 DOI: 10.1016/j.rmed.2024.107534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 01/22/2024]
Abstract
BACKGROUND Pathophysiological conditions underlying pulmonary fibrosis remain poorly understood. Exhaled breath volatile organic compounds (VOCs) have shown promise for lung disease diagnosis and classification. In particular, carbonyls are a byproduct of oxidative stress, associated with fibrosis in the lungs. To explore the potential of exhaled carbonyl VOCs to reflect underlying pathophysiological conditions in pulmonary fibrosis, this proof-of-concept study tested the hypothesis that volatile and low abundance carbonyl compounds could be linked to diagnosis and associated disease severity. METHODS Exhaled breath samples were collected from outpatients with a diagnosis of Idiopathic Pulmonary Fibrosis (IPF) or Connective Tissue related Interstitial Lung Disease (CTD-ILD) with stable lung function for 3 months before enrollment, as measured by pulmonary function testing (PFT) DLCO (%), FVC (%) and FEV1 (%). A novel microreactor was used to capture carbonyl compounds in the breath as direct output products. A machine learning workflow was implemented with the captured carbonyl compounds as input features for classification of diagnosis and disease severity based on PFT (DLCO and FVC normal/mild vs. moderate/severe; FEV1 normal/mild/moderate vs. moderately severe/severe). RESULTS The proposed approach classified diagnosis with AUROC=0.877 ± 0.047 in the validation subsets. The AUROC was 0.820 ± 0.064, 0.898 ± 0.040, and 0.873 ± 0.051 for disease severity based on DLCO, FEV1, and FVC measurements, respectively. Eleven key carbonyl VOCs were identified with the potential to differentiate diagnosis and to classify severity. CONCLUSIONS Exhaled breath carbonyl compounds can be linked to pulmonary function and fibrotic ILD diagnosis, moving towards improved pathophysiological understanding of pulmonary fibrosis.
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Affiliation(s)
- Matthew J Taylor
- Division of Pulmonary Medicine, University of Louisville, Louisville, KY, USA
| | - Corey P Chitwood
- Department of Bioengineering, University of Louisville, Louisville, KY, USA
| | - Zhenzhen Xie
- Department of Chemical Engineering, University of Louisville, Louisville, KY, USA
| | - Hunter A Miller
- Department of Bioengineering, University of Louisville, Louisville, KY, USA
| | - Victor H van Berkel
- Department of Cardiovascular and Thoracic Surgery, University of Louisville, Louisville, KY, USA
| | - Xiao-An Fu
- Department of Chemical Engineering, University of Louisville, Louisville, KY, USA.
| | - Hermann B Frieboes
- Department of Bioengineering, University of Louisville, Louisville, KY, USA; Department of Pharmacology/Toxicology, University of Louisville, Louisville, KY, USA; James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA; Center for Predictive Medicine, University of Louisville, Louisville, KY, USA.
| | - Sally A Suliman
- Banner University Medical Center, Phoenix, AZ, USA; Formerly at: Division of Pulmonary Medicine, University of Louisville, Louisville, KY, USA.
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Tsujii A, Isoda K, Yoshimura M, Nakabayashi A, Kim DS, Tamada T, Yamamoto K, Ohshima S. Janus kinase inhibitors vs. abatacept about safety and efficacy for patients with rheumatoid arthritis-associated interstitial lung disease: a retrospective nested case-control study. BMC Rheumatol 2024; 8:4. [PMID: 38273359 PMCID: PMC10811846 DOI: 10.1186/s41927-024-00374-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 01/12/2024] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND Interstitial lung disease (ILD) related to rheumatoid arthritis (RA) is among the leading causes of death and an essential prognostic factor. There is only limited evidence for the safety of anti-rheumatic drugs for patients with RA-ILD. The aim of this study is to investigate the safety and efficacy of Janus kinase inhibitors (JAKis) by comparing it with abatacept (ABT) in patients with RA-ILD. METHODS This single centre, retrospective nested case-control study enrolled patients with RA-ILD treated with JAKi or ABT. To determine the safety of the two drugs for existing ILD, we compared their drug persistency, incidence rates of pulmonary complications, and change of chest computed tomography (CT) image. For their efficacy as RA treatment, disease activity scores and prednisolone (PSL)-sparing effect were compared. We performed propensity score matching to match the groups' patient characteristics. RESULTS We studied 71 patients with RA-ILD (ABT, n = 45; JAKi, n = 26). At baseline, the JAKi group had longer disease duration, longer duration of past bDMARD or JAKi use and higher usual interstitial pneumonia rate. After propensity score matching, no significant differences in patient characteristics were found between the two groups. No significant difference in the drug persistency rate for the first 2 years (ABT, 61.9%; JAKi, 42.8%; P = 0.256) was observed between the two matched groups. The incidence rate of pulmonary complications did not differ significantly between the two groups (P = 0.683). The CT score did not change after the treatment for the ABT group (Ground-glass opacities (GGO): P = 0.87; fibrosis: P = 0.78), while the GGO score significantly improved for the JAKi group (P = 0.03), although the number was limited (ABT: n = 7; JAKi: n = 8). The fibrosis score of the JAKi group did not change significantly.(P = 0.82). Regarding the efficacy for RA, a significant decrease in disease activity scores after the 1-year treatment was observed in both groups, and PSL dose was successfully tapered, although no significant differences were observed between the two drugs. CONCLUSIONS JAKi is as safe and effective as ABT for patients with RA-ILD. JAKi can be a good treatment option for such patients.
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Affiliation(s)
- Atsuko Tsujii
- Department of Rheumatology, NHO Osaka Minami Medical Centre, 2-1 Kidohigashi, Kawachinagano, Osaka, 586-8521, Japan
| | - Kentaro Isoda
- Department of Clinical Research/Rheumatology, NHO Osaka Minami Medical Centre, 2-1 Kidohigashi, Kawachinagano, Osaka, 586-8521, Japan
| | - Maiko Yoshimura
- Department of Rheumatology, NHO Osaka Minami Medical Centre, 2-1 Kidohigashi, Kawachinagano, Osaka, 586-8521, Japan
| | - Akihiko Nakabayashi
- Department of Rheumatology, NHO Osaka Minami Medical Centre, 2-1 Kidohigashi, Kawachinagano, Osaka, 586-8521, Japan
| | - Dong-Seop Kim
- Department of Rheumatology, NHO Osaka Minami Medical Centre, 2-1 Kidohigashi, Kawachinagano, Osaka, 586-8521, Japan
| | - Tatsuya Tamada
- Department of Rheumatology, NHO Osaka Minami Medical Centre, 2-1 Kidohigashi, Kawachinagano, Osaka, 586-8521, Japan
| | - Kurumi Yamamoto
- Department of Rheumatology, NHO Osaka Minami Medical Centre, 2-1 Kidohigashi, Kawachinagano, Osaka, 586-8521, Japan
| | - Shiro Ohshima
- Department of Clinical Research, NHO Osaka Minami Medical Centre, 2-1 Kidohigashi, Kawachinagano, Osaka, 586-8521, Japan.
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Lee JK, Ahn Y, Noh HN, Lee SM, Yoo B, Lee CK, Kim YG, Hong S, Ahn SM, Kim HC. Clinical effect of progressive pulmonary fibrosis on patients with connective tissue disease-associated interstitial lung disease: a single center retrospective cohort study. Clin Exp Med 2023; 23:4797-4807. [PMID: 37831431 PMCID: PMC10725328 DOI: 10.1007/s10238-023-01212-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 09/29/2023] [Indexed: 10/14/2023]
Abstract
The concept of progressive pulmonary fibrosis (PPF) has been introduced to predict the diverse prognosis of interstitial lung disease (ILD). However, the incidence and effect of PPF on outcomes in patients with connective tissue disease-associated interstitial lung disease (CTD-ILD) need to be elucidated. This study reviewed 197 patients with CTD-ILD. Symptomatic worsening, pulmonary function decline, and radiological deterioration were investigated to assess the fulfillment of PPF diagnostic criteria. Clinical outcomes, including mortality, were compared based on the presence or absence of PPF. The median follow-up duration was 17.4 months. The mean age of the patients was 64.0 years, and 60.9% were female. Among the underlying CTDs, rheumatoid arthritis (42.1%), inflammatory myositis (19.8%), and systemic sclerosis (13.2%) were the most common. Of the 197 patients, 37 (18.8%) met the diagnostic criteria for PPF during the follow-up period. Even after adjusting for other significant risk factors, PPF was independently associated with mortality [hazard ratio (HR) 3.856; 95% confidence interval (CI) 1.387-10.715; P = 0.010] and baseline albumin was marginally significantly associated with mortality (HR 0.549; CI 0.298-1.010; P = 0.054). The median survival was also significantly shorter in the PPF group than in the non-PPF group (72.3 ± 12.9 vs. 126.8 ± 15.5 months, P < 0.001). Baseline KL-6 ≥ 1000 (U/mL) was a significant risk factor for PPF (HR 2.885; CI 1.165-7.144; P = 0.022). In addition to increased mortality, the PPF group had significantly higher rates of respiratory-related hospitalizations, pneumonia, acute exacerbations, and weight loss than the non-PPF group. PPF is a significant prognostic indicator in patients with CTD-ILD. Thus, healthcare professionals should know that patients with CTD-ILD are at risk of PPF.
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Affiliation(s)
- Ju Kwang Lee
- Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yura Ahn
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Han Na Noh
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sang Min Lee
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Bin Yoo
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang-Keun Lee
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yong-Gil Kim
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seokchan Hong
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Soo Min Ahn
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ho Cheol Kim
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-Ro 43-Gil, Songpa-Gu, Seoul, 05505, Republic of Korea.
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Walsh SLF, Lafyatis RA, Cottin V. Imaging Features of Autoimmune Disease-Related Interstitial Lung Diseases. J Thorac Imaging 2023; 38:S30-S37. [PMID: 37732704 DOI: 10.1097/rti.0000000000000734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Interstitial lung diseases (ILDs) associated with autoimmune diseases show characteristic signs of imaging. Radiologic signs are also used in the identification of ILDs with features suggestive of autoimmune disease that do not meet the criteria for a specific autoimmune disease. Radiologists play a key role in identifying these signs and assessing their relevance as part of multidisciplinary team discussions. A radiologist may be the first health care professional to pick up signs of autoimmune disease in a patient referred for assessment of ILD or with suspicion for ILD. Multidisciplinary team discussion of imaging findings observed during follow-up may inform a change in diagnosis or identify progression, with implications for a patient's treatment regimen. This article describes the imaging features of autoimmune disease-related ILDs and the role of radiologists in assessing their relevance.
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Affiliation(s)
- Simon L F Walsh
- National Heart and Lung Institute, Imperial College, London, UK
| | - Robert A Lafyatis
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, PA
| | - Vincent Cottin
- National Reference Center for Rare Pulmonary Diseases, Louis Pradel Hospital, Claude Bernard University Lyon 1, Lyon, France
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Huang Y, Qiu Y, Xie Z, Zhang F, Zhang Y, Guan M, Wang X, Cai W, Sun J. Risk factors and prognosis of interstitial lung disease for primary Sjögren syndrome patients: A retrospective case‒control study. Clin Rheumatol 2023; 42:3033-3041. [PMID: 37421537 DOI: 10.1007/s10067-023-06596-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 03/28/2023] [Accepted: 04/07/2023] [Indexed: 07/10/2023]
Abstract
OBJECTIVE To determine the prevalence, clinical features, risk factors, and prognosis of interstitial lung disease (ILD) in patients with primary Sjogren's syndrome (pSS). METHODS Data from 274 pSS patients from August 2013 to August 2022 were reviewed. The clinical features of pSS with ILD were revealed. Logistic regression was used to determine risk factors for ILD in pSS patients. Survival analysis and Cox regression were used to analyse the prognosis and prognostic factors of pSS patients. RESULTS In pSS patients, the prevalence of ILD was 22.3% (61/274). The pSS patients with ILD were characterized by a late onset and long disease course, with a nonspecific interstitial pneumonia (NSIP) pattern as the predominant high-resolution computed tomography (HRCT) finding. Logistic regression results indicated that an age over 50 years old (OR 4.786, 95% CI 1.602-14.299; P = 0.005), purpuric rash (OR 4.695, 95% CI 1.537-14.339; P = 0.007), AMA-M2 antibody positivity (OR 2.582, 95% CI 1.166-5.722; P = 0.019), and diabetes (OR 2.514, 95% CI 1.025-6.167; P = 0.044) were risk factors for ILD in pSS patients. Cox regression results showed that advanced age (HR 1.240, 95% CI 1.088-1.413; P = 0.001) and cancer history (HR 8.411, 95% CI 1.771-39.934; P = 0.007) were risk factors for pSS patient survival. CONCLUSION This study showed that pSS patients with ILD tended to have a late onset and long course of pSS. An age over 50 years, purpuric rash, AMA-M2 antibody positivity, and diabetes were risk factors for ILD in pSS patients. Advanced age and cancer history were prognostic factors in pSS patients. Key Points • This study showed that pSS patients with ILD tended to have a late-onset and lengthy course of pSS, with the NSIP pattern as the predominant lung image. • The risk factors for ILD in pSS patients determined in this study were an age over 50 years, purpuric rash, AMA-M2 antibody positivity, and diabetes. • The prognostic risk factors for pSS patients were advanced age and cancer history.
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Affiliation(s)
- Yichen Huang
- The Second Clinical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Yanran Qiu
- The Second Clinical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Zhijun Xie
- School of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Fengqi Zhang
- School of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Yi Zhang
- School of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Meihui Guan
- The Second Clinical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Xinchang Wang
- The Second Clinical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
| | - Wanru Cai
- The Second Clinical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
| | - Jing Sun
- The Second Clinical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
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11
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Sakamoto S, Suzuki A, Homma S, Usui Y, Shimizu H, Sekiya M, Miyoshi S, Nakamura Y, Urabe N, Isshiki T, Kurosaki A, Kishi K. Outcomes and prognosis of progressive pulmonary fibrosis in patients with antineutrophil cytoplasmic antibody-positive interstitial lung disease. Sci Rep 2023; 13:17616. [PMID: 37848575 PMCID: PMC10582016 DOI: 10.1038/s41598-023-45027-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/14/2023] [Indexed: 10/19/2023] Open
Abstract
Approximately one-third of fibrosing interstitial lung diseases exhibit progressive pulmonary fibrosis (PPF), a clinicopathological condition distinct yet resembling idiopathic pulmonary fibrosis (IPF). PPF in ANCA-positive ILD (ANCA-ILD) is poorly documented. To clarify incidence, predictors of PPF in ANCA-ILD, and their prognostic impact, 56 patients with ANCA-ILD were followed for ≥ 1 year (April 2004 to April 2021). PPF was defined per ATS/ERS/JRS/ALAT PPF 2022 guideline. We compared PPF and non-PPF in 38 patients with pulmonary function tests and ≥ 1 year follow up. ANCA-ILD (19 male, 19 female; mean age 72 years) comprised 21 patients with microscopic polyangiitis ILD (MPA-ILD) and 17 with ANCA-positive IP without systemic vasculitis (ANCA-IP). PPF occurred in 15/38 (39.5%) overall, and 27% of patients with MPA-ILD and 53% with ANCA-IP. Patient characteristics did not differ between PPF and non-PPF, however, the survival was significantly worse in patients with PPF than those with non-PPF. On multivariate regression analysis, higher age, higher serum SP-D level, and lower baseline %FVC were associated with PPF. In ANCA-ILD, 39.5% of patients demonstrated PPF, which is associated with increased mortality. Predictors of PPF were older age, higher SP-D, and lower baseline %FVC.
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Affiliation(s)
- Susumu Sakamoto
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan.
| | - Aika Suzuki
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan
| | - Sakae Homma
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan
| | - Yusuke Usui
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan
| | - Hiroshige Shimizu
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan
| | - Muneyuki Sekiya
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan
| | - Shion Miyoshi
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan
| | - Yasuhiko Nakamura
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan
| | - Naohisa Urabe
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan
| | - Takuma Isshiki
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan
| | - Atsuko Kurosaki
- Department of Diagnostic Radiology, Fukujuji Hospital, Kiyose, Tokyo, Japan
| | - Kazuma Kishi
- Division of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1, Ota-Ku Omori Nisi, Tokyo, 143-8541, Japan
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12
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Chen YH, Lee TJ, Hsieh HJ, Hsieh SC, Wang HC, Chang YC, Yu CJ, Chien JY. Clinical outcomes and risk factors of progressive pulmonary fibrosis in primary Sjögren's syndrome-associated interstitial lung disease. BMC Pulm Med 2023; 23:268. [PMID: 37468847 DOI: 10.1186/s12890-023-02562-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/12/2023] [Indexed: 07/21/2023] Open
Abstract
BACKGROUND To investigate the clinical outcomes and risk factors associated with progressive fibrosing interstitial lung disease (PF-ILD) in patients with primary Sjögren's syndrome-associated interstitial lung disease (pSjS-ILD). METHODS During 2015-2021, pSjS patients with ILD were retrospectively identified. Patients were grouped into non-PF-ILD and PF-ILD. Demographics, laboratory data, pulmonary function tests (PFTs), images, survival outcomes were compared between groups. RESULTS 153 patients with SjS-ILD were reviewed, of whom 68 having primary SjS-ILD (pSjS-ILD) were classified into non-PF-ILD (n = 34) and PF-ILD groups (n = 34). PF-ILD group had persistently lower albumin levels and a smaller decline in immunoglobulin G (IgG) levels at the 3rd month of follow-up. The multivariate logistic regression analysis revealed that persistently low albumin levels were associated with PF-ILD. At the 12th month, the PF-ILD group experienced a smaller increase in FVC and a greater decline in the diffusion capacity of carbon monoxide (DLCO) than at baseline. The 3-year overall survival rate was 91.2%, and PF-ILD group had significantly poorer 3-year overall survival rate than non-PF-ILD group (82.4% vs. 100%, p = 0.011). Poor survival was also observed among female patients with PF-ILD. CONCLUSIONS Among patients with pSjS-ILD, the PF-ILD group had poorer 3-year survival outcomes. Persistent lower albumin level might be the risk factor of PF-ILD. Early lung function tests could be helpful for the early detection of PF-ILD.
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Affiliation(s)
- Yu-Hsuan Chen
- Department of Internal Medicine, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Tai-Ju Lee
- Department of Internal Medicine, National Taiwan University Hospital Hsinchu Branch, Hsinchu, Taiwan
| | - Hsin-Jung Hsieh
- Department of Internal Medicine, National Taiwan University Hospital Jinshan Branch, New-Taipei, Taiwan
| | - Song-Chou Hsieh
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Hao-Chien Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yeun-Chung Chang
- Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan
| | - Chong-Jen Yu
- Department of Internal Medicine, National Taiwan University Hospital Hsinchu Branch, Hsinchu, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Jung-Yien Chien
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
- Division of Chest Medicine, Department of Internal Medicine, National Taiwan University Hospital, No. 7, Zhongshan S. Rd., Zhongzheng Dist., Taipei 100, Taipei, Taiwan.
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13
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Fu H, Zheng Z, Zhang Z, Yang Y, Cui J, Wang Z, Xue J, Chi S, Cao M, Chen J. Prediction of progressive pulmonary fibrosis in patients with anti-synthetase syndrome-associated interstitial lung disease. Clin Rheumatol 2023; 42:1917-1929. [PMID: 36929316 PMCID: PMC10266998 DOI: 10.1007/s10067-023-06570-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 02/06/2023] [Accepted: 03/03/2023] [Indexed: 03/18/2023]
Abstract
OBJECTIVE Interstitial lung disease (ILD) is a common extramuscular manifestation of the anti-synthetase syndrome (ASS). Patients with ASS-ILD are at risk in developing a progressive fibrosing phenotype despite appropriate treatments. This study investigated the risk factors and the predictive value of multiple risk factors for progressive pulmonary fibrosis (PPF) in patients with ASS-ILD. METHODS Ninety patients with a diagnosis of ASS and evidence of ILD on high-resolution computed tomography (HRCT) were recruited. Among them, 72 participants completed follow-up for more than 12 months. These patients were further divided into a PPF-ASS group (n = 18) and a non-PPF-ASS group (n = 54). Logistic regression analysis was performed to investigate the risk factors for PPF. The predictive value of the combined risk factors for predicting PPF were analyzed by a ROC curve. RESULTS The PPF-ASS group had a higher rate of positive non-Jo-1 antibodies, a significantly higher neutrophil-to-lymphocyte ratio (NLR) and serum lactate dehydrogenase (LDH), and a significantly lower PaO2/FiO2 ratio and diffusing capacity for carbon monoxide (DLCO%pred) than the non-PPF-ASS group. In addition, elevated serum Krebs von den Lungen-6 (KL-6) level and reticular opacities were significantly more common, and corticosteroid monotherapy at onset was administered more frequently in the PPF-ASS group. The median duration of follow-up was 37.4 months, survival was poorer in the PPF-ASS group, and the overall survival was 88.9%. Multivariate regression analysis further revealed that positive non-Jo-1 antibodies, NLR, and KL-6 were independent risk factors for PPF. These combined indexes had good accuracy (area under the curve = 0.874) in predicting PPF in patients with ASS-ILD. CONCLUSION Positive non-Jo-1 antibodies, NLR, and serum KL-6 are independent risk factors for PPF in patients with ASS-ILD. Monitoring these markers can potentially predict PPF in this group of patients. Key Points • Positive non-Jo-1 antibodies, NLR, and serum KL-6 are independent risk factors associated with PPF in patients with ASS-ILD. • Monitoring non-Jo-1 antibodies, NLR, and serum KL-6 can potentially predict PPF in patients with ASS-ILD.
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Affiliation(s)
- Hongyan Fu
- Department of Key Laboratory of Ningxia Stem Cell and Regenerative Medicine, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
- Department of Pulmonary and Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
- Ningxia Medical University, Yinchuan, 750004 Ningxia China
| | - Ziyao Zheng
- Department of Pulmonary and Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
- Department of Pulmonary and Critical Care Medicine, General Hospital of Xinmi Traditional Chinese Medicine, Xinmi, 452370 Henan China
| | - Zhenping Zhang
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan, 750004 China
| | - Yanjuan Yang
- Department of Pulmonary and Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
| | - Jieda Cui
- Department of Pulmonary and Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
| | - Zhaojun Wang
- Department of Pulmonary and Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
- Department of Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
| | - Jing Xue
- Institute of Human Stem Cell Research, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
| | - Shuhong Chi
- Department of Rheumatology, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
| | - Mengshu Cao
- Department of Respiratory and Critical Care Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, 210008 Jiangsu China
| | - Juan Chen
- Department of Key Laboratory of Ningxia Stem Cell and Regenerative Medicine, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
- Department of Pulmonary and Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan, 750004 Ningxia China
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14
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Niitsu T, Fukushima K, Komukai S, Takata S, Abe Y, Nii T, Kuge T, Iwakoshi S, Shiroyama T, Miyake K, Tujino K, Tanizaki S, Iwahori K, Hirata H, Miki K, Yanagawa M, Takeuchi N, Takeda Y, Kida H, Kumanogoh A. Real-world impact of antifibrotics on prognosis in patients with progressive fibrosing interstitial lung disease. RMD Open 2023; 9:rmdopen-2022-002667. [PMID: 36690385 PMCID: PMC9872509 DOI: 10.1136/rmdopen-2022-002667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 12/29/2022] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE No studies have demonstrated the real-world efficacy of antifibrotics for progressive fibrosing interstitial lung disease (PF-ILD). Therefore, we evaluated the efficacy of antifibrotics in patients with PF-ILD. METHODS We retrospectively reviewed the medical records of patients with ILD from January 2012 to July 2021. Patients were diagnosed with PF-ILD if they had ≥10% fibrosis on high-resolution CT (HRCT) and a relative forced vital capacity (FVC) decline of either ≥10% or >5% to <10% with clinical deterioration or progression of fibrosis on HRCT during overlapping windows of 2 years and with a %FVC of ≥45%. We compared FVC changes and overall survival (OS) between patients with and without antifibrotics. FVC changes were analysed using generalised estimating equations. We used inverse probability weighting (IPW) and statistical matching to adjust for covariates. RESULTS Of the 574 patients, 167 were diagnosed with PF-ILD (idiopathic pulmonary fibrosis (IPF), n=64; non-IPF, n=103). Antifibrotics improved the FVC decline in both IPF (p=0.002) and non-IPF (p=0.05) (IPW: IPF, p=0.015; non-IPF, p=0.031). Among patients with IPF, OS was longer in the antifibrotic group (log-rank p=0.001). However, among patients with non-IPF, OS was not longer in the antifibrotic group (p=0.3263) (IPW and statistical matching: IPF, p=0.0534 and p=0.0018; non-IPF, p=0.5663 and p=0.5618). CONCLUSION This is the first real-world study to show that antifibrotics improve the FVC decline in PF-ILD. However, among patients with non-IPF, we found no significant difference in mortality between those with and without antifibrotics. Future studies must clarify whether antifibrotics improve the prognosis of non-IPF.
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Affiliation(s)
- Takayuki Niitsu
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | - Kiyoharu Fukushima
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan,Respiratory Medicine, Osaka Toneyama Medical Center, Toyonaka, Osaka, Japan
| | - Sho Komukai
- Biomedical Statistics, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan,Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan
| | - So Takata
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | - Yuko Abe
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | - Takuro Nii
- Rheumatology, Osaka Toneyama Medical Center, Toyonaka, Osaka, Japan
| | - Tomoki Kuge
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | | | - Takayuki Shiroyama
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | - Kotaro Miyake
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | - Kazuyuki Tujino
- Respiratory Medicine, Osaka Toneyama Medical Center, Toyonaka, Osaka, Japan
| | - Satoshi Tanizaki
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | - Kota Iwahori
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | - Haruhiko Hirata
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | - Keisuke Miki
- Respiratory Medicine, Osaka Toneyama Medical Center, Toyonaka, Osaka, Japan
| | - Masahiro Yanagawa
- Radiology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | | | - Yoshito Takeda
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
| | - Hiroshi Kida
- Respiratory Medicine, Osaka Toneyama Medical Center, Toyonaka, Osaka, Japan
| | - Atsushi Kumanogoh
- Respiratory Medicine and Clinical Immunology, Osaka University Faculty of Medicine Graduate School of Medicine, Suita, Osaka, Japan
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15
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Chiu YH, Koops MFM, Voortman M, van Es HW, Langezaal LCM, Welsing PMJ, Jamnitski A, Wind AE, van Laar JM, Grutters JC, Spierings J. Prognostication of progressive pulmonary fibrosis in connective tissue disease-associated interstitial lung diseases: A cohort study. Front Med (Lausanne) 2023; 10:1106560. [PMID: 36923009 PMCID: PMC10008854 DOI: 10.3389/fmed.2023.1106560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 02/07/2023] [Indexed: 03/02/2023] Open
Abstract
Background Connective tissue diseases-associated interstitial lung disease (CTD-ILD) is a heterogeneous condition that impairs quality of life and is associated with premature death. Progressive pulmonary fibrosis (PPF) has been identified as an important risk factor for poor prognosis. However, different criteria for PPF are used in clinical studies, which may complicate comparison between trials and translation of study findings into clinical practice. Methods This is a retrospective single center study in patients with CTD-ILD. The prognostic relevance of PPF definitions, including INBUILD, ATS/ERS/JRS/ALAT 2022, and simplified progressive fibrosing (simplified PF) criteria, were examined in this cohort and validated in the other reported Dutch CTD-ILD cohort. Results A total of 230 patients with CTD-ILD were included and the median follow-up period was six (3-9) years. Mortality risk was independently associated with age (adjusted HR 1.07, p < 0.001), smoking history (adjusted HR 1.90, p = 0.045), extent of fibrosis on high-resolution computed tomography (HRCT) at baseline (adjusted HR 1.05, p = 0.018) and baseline DLCO (adjusted HR 0.97, p = 0.013). Patients with regular pulmonary function tests in the first 2 years (adjusted HR 0.42, p = 0.002) had a better survival. The prognostic relevance for survival was similar between the three PPF criteria in the two cohorts. Conclusion Higher age, smoking, increased extent of fibrosis and low baseline DLCO were associated with poor prognosis, while regular pulmonary function evaluation was associated with better survival. The INBUILD, ATS/ERS/JRS/ALAT 2022, and simplified PF criteria revealed similar prognostication.
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Affiliation(s)
- Yu-Hsiang Chiu
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, Netherlands.,Division of Rheumatology, Immunology and Allergy, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Maaike F M Koops
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Mareye Voortman
- Department of Pulmonology, University Medical Center Utrecht, Utrecht, Netherlands
| | - H Wouter van Es
- Department of Radiology, St. Antonius Hospital, Nieuwegein, Netherlands
| | | | - Paco M J Welsing
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Anna Jamnitski
- Department of Rheumatology, St. Antonius Hospital, Nieuwegein, Netherlands
| | - Anne E Wind
- Department of Pulmonology, ILD Center of Excellence, St. Antonius Hospital, Nieuwegein, Netherlands
| | - Jacob M van Laar
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Jan C Grutters
- Department of Pulmonology, University Medical Center Utrecht, Utrecht, Netherlands.,Department of Pulmonology, ILD Center of Excellence, St. Antonius Hospital, Nieuwegein, Netherlands
| | - Julia Spierings
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, Netherlands
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16
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Piotrowski WJ, Martusewicz-Boros MM, Białas AJ, Barczyk A, Batko B, Błasińska K, Boros PW, Górska K, Grzanka P, Jassem E, Jastrzębski D, Kaczyńska J, Kowal-Bielecka O, Kucharz E, Kuś J, Kuźnar-Kamińska B, Kwiatkowska B, Langfort R, Lewandowska K, Mackiewicz B, Majewski S, Makowska J, Miłkowska-Dymanowska J, Puścińska E, Siemińska A, Sobiecka M, Soroka-Dąda RA, Szołkowska M, Wiatr E, Ziora D, Śliwiński P. Guidelines of the Polish Respiratory Society on the Diagnosis and Treatment of Progressive Fibrosing Interstitial Lung Diseases Other than Idiopathic Pulmonary Fibrosis. Adv Respir Med 2022; 90:425-450. [PMID: 36285980 PMCID: PMC9717335 DOI: 10.3390/arm90050052] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 08/24/2022] [Accepted: 09/05/2022] [Indexed: 11/16/2023]
Abstract
The recommendations were developed as answers to previously formulated questions concerning everyday diagnostic and therapeutic challenges. They were developed based on a review of the current literature using the GRADE methodology. The experts suggest that PF-ILD be diagnosed based on a combination of different criteria, such as the aggravation of symptoms, progression of radiological lesions, and worsening of lung function test parameters. The experts recommend a precise diagnosis of an underlying disease, with serological testing for an autoimmune disease always being included. The final diagnosis should be worked out by a multidisciplinary team (MDT). Patients with an interstitial lung disease other than IPF who do not meet the criteria for the progressive fibrosis phenotype should be monitored for progression, and those with systemic autoimmune diseases should be regularly monitored for signs of interstitial lung disease. In managing patients with interstitial lung disease associated with autoimmune diseases, an opinion of an MDT should be considered. Nintedanib rather than pirfenidon should be introduced in the event of the ineffectiveness of the therapy recommended for the treatment of the underlying disease, but in some instances, it is possible to start antifibrotic treatment without earlier immunomodulatory therapy. It is also admissible to use immunomodulatory and antifibrotic drugs simultaneously. No recommendations were made for or against termination of anti-fibrotic therapy in the case of noted progression during treatment of a PF-ILD other than IPF. The experts recommend that the same principles of non-pharmacological and palliative treatment and eligibility for lung transplantation should be applied to patients with an interstitial lung disease other than IPF with progressive fibrosis as in patients with IPF.
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Affiliation(s)
| | - Magdalena M. Martusewicz-Boros
- 3rd Lung Diseases and Oncology Department, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warsaw, Poland
| | - Adam J. Białas
- Department of Pathobiology of Respiratory Diseases, Medical University of Lodz, 90-153 Lodz, Poland
| | - Adam Barczyk
- Department of Pneumonology, School of Medicine in Katowice, Medical University of Silesia, 40-635 Katowice, Poland
| | - Bogdan Batko
- Department of Rheumatology and Immunology, Faculty of Medicine and Health Sciences, Andrzej Frycz Modrzewski University, 30-705 Krakow, Poland
| | - Katarzyna Błasińska
- Department of Radiology, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warsaw, Poland
| | - Piotr W. Boros
- Lung Pathophysiology Department, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warsaw, Poland
| | - Katarzyna Górska
- Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Piotr Grzanka
- Department of Radiology, Voivodeship Hospital in Opole, 45-061 Opole, Poland
| | - Ewa Jassem
- Department of Allergology and Pneumonology, Medical University of Gdansk, 80-214 Gdańsk, Poland
| | - Dariusz Jastrzębski
- Department of Lung Diseases and Tuberculosis, Medical University of Silesia, 41-803 Zabrze, Poland
| | | | - Otylia Kowal-Bielecka
- Department of Rheumatology and Internal Medicine, Medical University of Białystok, 15-276 Białystok, Poland
| | - Eugeniusz Kucharz
- Department of Internal Medicine, Rheumatology and Clinical Immunology, Medical University of Silesia, 40-635 Katowice, Poland
| | - Jan Kuś
- 1st Lung Diseases Department, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warsaw, Poland
| | - Barbara Kuźnar-Kamińska
- Department of Pulmonology, Allergology and Respiratory Oncology, University of Medical Sciences in Poznan, 61-701 Poznan, Poland
| | - Brygida Kwiatkowska
- Department of Rheumatology, Eleonora Reicher Rheumatology Institute, 02-637 Warszawa, Poland
| | - Renata Langfort
- Department of Pathology, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warszawa, Poland
| | - Katarzyna Lewandowska
- 1st Lung Diseases Department, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warsaw, Poland
| | - Barbara Mackiewicz
- Department of Pneumonology, Oncology and Allergology, Medical University, Lublin, 20-090 Lublin, Poland
| | - Sebastian Majewski
- Department of Pneumology, Medical University of Lodz, 90-153 Lodz, Poland
| | - Joanna Makowska
- Department of Rheumatology, Medical University of Lodz, 92-213 Lodz, Poland
| | | | - Elżbieta Puścińska
- 2nd Department of Respiratory Medicine, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warsaw, Poland
| | - Alicja Siemińska
- Department of Allergology, Medical University of Gdańsk, 80-214 Gdansk, Poland
| | - Małgorzata Sobiecka
- 1st Lung Diseases Department, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warsaw, Poland
| | | | - Małgorzata Szołkowska
- Department of Pathology, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warszawa, Poland
| | - Elżbieta Wiatr
- 3rd Lung Diseases and Oncology Department, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warsaw, Poland
| | - Dariusz Ziora
- Department of Lung Diseases and Tuberculosis, Medical University of Silesia, 41-803 Zabrze, Poland
| | - Paweł Śliwiński
- 2nd Department of Respiratory Medicine, National Tuberculosis and Lung Diseases Research Institute in Warsaw, 01-138 Warsaw, Poland
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Anti-Inflammatory and/or Anti-Fibrotic Treatment of MPO-ANCA-Positive Interstitial Lung Disease: A Short Review. J Clin Med 2022; 11:jcm11133835. [PMID: 35807120 PMCID: PMC9267459 DOI: 10.3390/jcm11133835] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/27/2022] [Accepted: 06/30/2022] [Indexed: 11/30/2022] Open
Abstract
The presence of a lung lesion is common in microscopic polyangiitis (MPA), and interstitial lung disease (ILD) can lead to a poor prognosis. Although myeloperoxidase antineutrophil cytoplasmic antibodies (MPO-ANCA) are often present in patients with MPA, patients with ILD and MPO-ANCA positivity but without other manifestations of systemic vasculitis have also been reported. Therefore, the possible association between MPO-ANCA, MPA, and idiopathic ILD remains unclear. This problematic matter has influenced the treatment strategy of MPO-ANCA-positive ILD patients without systemic vasculitis. Clinicians should undertake treatment with careful consideration of the four major causes of death in MPO-ANCA-positive ILD: acute exacerbation of ILD, progressive lung fibrosis, infectious comorbidities, and diffuse alveolar hemorrhage. Further, clinicians need to carefully judge whether inflammation or fibrosis is the dominant condition with reference to the patient’s clinical domain and radiopathological lung features. Recently, anti-fibrotic agents such as nintedanib and pirfenidone were shown to be effective in treating various etiologies associated with ILD and have thus led to the widening of treatment options. In this review, the clinical characteristics, radiopathology, prognosis, and therapeutic options in patients with MPO-ANCA-positive ILD are summarized using limited information from previous studies.
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Yeh JJ, Hung TW, Lin CL, Chen TT, Liw PX, Yu YL, Kao CH. Colchicine Is a Weapon for Managing the Heart Disease Among Interstitial Lung Disease With Viral Infection: Have We Found the Holy Grail? Front Cardiovasc Med 2022; 9:925211. [PMID: 35837610 PMCID: PMC9273766 DOI: 10.3389/fcvm.2022.925211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/01/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundThis study investigated the effect of colchicine use on the risks of heart disease (HD), pericarditis, endocarditis, myocarditis, cardiomyopathy, cardiac arrhythmia, and cardiac failure in patients having interstitial lung disease (ILD) with virus infection (ILD cohort).MethodsWe retrospectively enrolled ILD cohort between 2000 and 2013 from the Longitudinal Health Insurance Database and divided them into colchicine users (n = 12,253) and colchicine non-users (n = 12,253) through propensity score matching. The event of interest was the diagnosis of HD. The incidence of HD was analyzed using multivariate Cox proportional hazards models between colchicine users and the comparison cohort after adjustment for age, sex, medication, comorbidities, and index date based on the time-dependent analysis.ResultsColchicine users had a significantly lower risk of HD (aHR = 0.87, 95% confidence interval (CI]) = 0.82–0.92) than did the colchicine non-user. For colchicine non-users as the reference, the aHR (95% CI) of the patients who received colchicine of 2–7, 8–30, 31–150, and > 150 days were 0.89 (0.81–0.98), 0.84 (0.76–0.94), 090 (0.80–0.99), and 0.83 (0.74–0.93), respectively; regardless of duration use, the lower risk of HD persisted in colchicine users. The cumulative incidence of HD in colchicine users was significantly lower than that in the colchicine non-users (log-rank p < 0.001).ConclusionThe addition of short-term or long-term colchicine to standard medical therapy may have benefits to prevent the HD among the ILD patients concurrent with a virus infection or comorbidities even in elderly patients.
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Affiliation(s)
- Jun-Jun Yeh
- Department of Family Medicine, Geriatric Medicine, Chest Medicine and Medical Research, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
| | - Tuey-Wen Hung
- Department of Family Medicine and Geriatric Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Cheng-Li Lin
- College of Medicine, China Medical University, Taichung, Taiwan
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
| | - Tsung-Tse Chen
- Department of Family Medicine and Geriatric Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Pei-Xuan Liw
- Department of Family Medicine and Geriatric Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Ya-Lun Yu
- Department of Family Medicine and Geriatric Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Chia-Hung Kao
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan
- Department of Nuclear Medicine and Positron Emission Tomography (PET) Center, China Medical University Hospital, Taichung, Taiwan
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan
- Center of Augmented Intelligence in Healthcare, China Medical University Hospital, Taichung, Taiwan
- *Correspondence: Chia-Hung Kao, ,
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Yeh JJ, Syue SH, Sun YF, Yeh YT, Zheng YC, Lin CL, Hsu CY, Kao CH. Hydroxychloroquine on the Pulmonary Vascular Diseases in Interstitial Lung Disease: Immunologic Effects, and Virus Interplay. Biomedicines 2022; 10:biomedicines10061290. [PMID: 35740313 PMCID: PMC9219797 DOI: 10.3390/biomedicines10061290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/27/2022] [Accepted: 05/28/2022] [Indexed: 02/05/2023] Open
Abstract
To investigate the effects of hydroxychloroquine (HCQ) drug use on the risk of pulmonary vascular disease (PVD) in an interstitial lung disease cohort (ILD cohort, ILD+ virus infection), we retrospectively enrolled the ILD cohort with HCQ (HCQ users, N = 4703) and the ILD cohort without HCQ (non-HCQ users, N = 4703) by time-dependence after propensity score matching. Cox models were used to analyze the risk of PVD. We calculated the adjusted hazard ratios (aHRs) and their 95% confidence intervals (CIs) for PVD after adjusting for sex, age, comorbidities, index date and immunosuppressants, such as steroids, etc. Compared with the HCQ nonusers, in HCQ users, the aHRs (95% CIs) for PVD were (2.24 (1.42, 3.54)), and the women’s aHRs for PVD were (2.54, (1.49, 4.35)). The aHRs based on the days of HCQ use for PVD of 28−30 days, 31−120 days, and >120 days were (1.27 (0.81, 1.99)), (3.00 (1.81, 4.87)) and (3.83 (2.46, 5.97)), respectively. The medium or long-term use of HCQ or young women receiving HCQ were associated with a higher aHR for PVD in the ILD cohort. These findings indicated interplay of the primary immunologic effect of ILD, comorbidities, women, age and virus in the HCQ users.
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Affiliation(s)
- Jun-Jun Yeh
- Department of Family Medicine, Geriatric Medicine, Chest Medicine and Medical Research, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi 600566, Taiwan;
- College of Medicine, China Medical University, Taichung 406040, Taiwan; (C.-L.L.); (C.Y.H.)
| | - Shih-Hueh Syue
- Department of Family Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi 600566, Taiwan; (S.-H.S.); (Y.-F.S.); (Y.-T.Y.); (Y.-C.Z.)
| | - Yi-Fun Sun
- Department of Family Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi 600566, Taiwan; (S.-H.S.); (Y.-F.S.); (Y.-T.Y.); (Y.-C.Z.)
| | - Yi-Ting Yeh
- Department of Family Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi 600566, Taiwan; (S.-H.S.); (Y.-F.S.); (Y.-T.Y.); (Y.-C.Z.)
| | - Ya-Chi Zheng
- Department of Family Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi 600566, Taiwan; (S.-H.S.); (Y.-F.S.); (Y.-T.Y.); (Y.-C.Z.)
| | - Cheng-Li Lin
- College of Medicine, China Medical University, Taichung 406040, Taiwan; (C.-L.L.); (C.Y.H.)
- Management Office for Health Data, China Medical University Hospital, China Medical University, Taichung 406040, Taiwan
| | - Chung Y. Hsu
- College of Medicine, China Medical University, Taichung 406040, Taiwan; (C.-L.L.); (C.Y.H.)
| | - Chia-Hung Kao
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, No. 2, Yuh-Der Road, Taichung 406040, Taiwan
- Department of Nuclear Medicine and PET Center, China Medical University Hospital, China Medical University, Taichung 406040, Taiwan
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung 41354, Taiwan
- Center of Augmented Intelligence in Healthcare, China Medical University Hospital, China Medical University, Taichung 406040, Taiwan
- Correspondence: or ; Tel.: +886-4-22052121
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Chiu YH, Chu CC, Lu CC, Liu FC, Tang SE, Chu SJ, Kuo SY, Chen HC. KL-6 as a Biomarker of Interstitial Lung Disease Development in Patients with Sjögren Syndrome: A Retrospective Case–Control Study. J Inflamm Res 2022; 15:2255-2262. [PMID: 35422651 PMCID: PMC9005069 DOI: 10.2147/jir.s352085] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/28/2022] [Indexed: 11/29/2022] Open
Abstract
Objective Krebs von den Lungen-6 (KL-6) is expressed on regenerating type II pneumocytes and has been recognized as biomarkers in interstitial lung disease (ILD). We aim to identify the role of the serum KL-6 level in patients with newly diagnosed Sjögren syndrome (SS), as well as the correlation between the immunoassays. Methods Patients with newly diagnosed SS and receiving HRCT for clinical reason during follow-up were included. Baseline KL-6 level was measured via enzyme-linked immunosorbent assay (ELISA) and latex particle-enhanced turbidimetric immunoassay (LETIA). Results Of the 39 patients, 21 (53.85%) developed interstitial lung disease (ILD) by the conclusion of the follow-up period. The median time to diagnosis of ILD was 2.24 years (IQR 1.15–4.34) in the ILD group. The median serum KL-6 level, measured using ELISA, was 1232 U/mL (IQR 937–2242) and 764.5 U/mL (IQR 503.25–1035.75) in the ILD group and the non-ILD group, respectively (p = 0.001). The median LETIA for serum KL-6 was 329 U/mL (IQR 235–619) and 245 U/mL (IQR 215.25–291) in the ILD group and the non-ILD group, respectively (p = 0.074). Conclusion Serum KL-6 levels were higher in newly diagnosed SS patients with ILD diagnosis during follow-up. Thus, the serum KL-6 level can serve as a valuable biomarker to identify hidden ILD in patients with newly diagnosed SS patients. However, the immunoassay procedure may influence the efficacy of the prediction and its clinical association.
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Affiliation(s)
- Yu-Hsiang Chiu
- Division of Rheumatology/Immunology/Allergies, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
- Department of Rheumatology and Clinical Immunology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Chen-Chih Chu
- Division of Rheumatology/Immunology/Allergies, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Chun-Chi Lu
- Division of Rheumatology/Immunology/Allergies, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Feng-Cheng Liu
- Division of Rheumatology/Immunology/Allergies, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Shin-En Tang
- Division of Thoracic Medicine, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Shi-Jye Chu
- Division of Rheumatology/Immunology/Allergies, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - San-Yuan Kuo
- Division of Rheumatology/Immunology/Allergies, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hsiang-Cheng Chen
- Division of Rheumatology/Immunology/Allergies, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
- Correspondence: Hsiang-Cheng Chen, Division of Rheumatology/Immunology/Allergy, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, No. 325, Sec, 2, Cheng-Gong Road, Neihu 114, Taipei, Taiwan, R.O.C, Tel +886 2 87927135, Fax +886 2 87927136, Email
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