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Wells AU. Optimal clinical practice in IPF and PPF: Integrating the scientific ethos and clinical reasoning. Respirology 2024; 29:356-358. [PMID: 38537694 DOI: 10.1111/resp.14710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 02/19/2024] [Indexed: 04/18/2024]
Abstract
See related article
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Affiliation(s)
- Athol U Wells
- Royal Brompton Hospital and Imperial College, London, UK
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Buschulte K, Kabitz HJ, Hagmeyer L, Hammerl P, Esselmann A, Wiederhold C, Skowasch D, Stolpe C, Joest M, Veitshans S, Höffgen M, Maqhuzu P, Schwarzkopf L, Hellmann A, Pfeifer M, Behr J, Karpavicius R, Günther A, Polke M, Höger P, Somogyi V, Lederer C, Markart P, Kreuter M. Disease trajectories in interstitial lung diseases - data from the EXCITING-ILD registry. Respir Res 2024; 25:113. [PMID: 38448953 PMCID: PMC10919020 DOI: 10.1186/s12931-024-02731-3] [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: 01/02/2024] [Accepted: 02/13/2024] [Indexed: 03/08/2024] Open
Abstract
BACKGROUND Interstitial lung diseases (ILD) comprise a heterogeneous group of mainly chronic lung diseases with different disease trajectories. Progression (PF-ILD) occurs in up to 50% of patients and is associated with increased mortality. METHODS The EXCITING-ILD (Exploring Clinical and Epidemiological Characteristics of Interstitial Lung Diseases) registry was analysed for disease trajectories in different ILD. The course of disease was classified as significant (absolute forced vital capacity FVC decline > 10%) or moderate progression (FVC decline 5-10%), stable disease (FVC decline or increase < 5%) or improvement (FVC increase ≥ 5%) during time in registry. A second definition for PF-ILD included absolute decline in FVC % predicted ≥ 10% within 24 months or ≥ 1 respiratory-related hospitalisation. Risk factors for progression were determined by Cox proportional-hazard models and by logistic regression with forward selection. Kaplan-Meier curves were utilised to estimate survival time and time to progression. RESULTS Within the EXCITING-ILD registry 28.5% of the patients died (n = 171), mainly due to ILD (n = 71, 41.5%). Median survival time from date of diagnosis on was 15.5 years (range 0.1 to 34.4 years). From 601 included patients, progression was detected in 50.6% of the patients (n = 304) with shortest median time to progression in idiopathic NSIP (iNSIP; median 14.6 months) and idiopathic pulmonary fibrosis (IPF; median 18.9 months). Reasons for the determination as PF-ILD were mainly deterioration in lung function (PFT; 57.8%) and respiratory hospitalisations (40.6%). In multivariate analyses reduced baseline FVC together with age were significant predictors for progression (OR = 1.00, p < 0.001). Higher GAP indices were a significant risk factor for a shorter survival time (GAP stage III vs. I HR = 9.06, p < 0.001). A significant shorter survival time was found in IPF compared to sarcoidosis (HR = 0.04, p < 0.001), CTD-ILD (HR = 0.33, p < 0.001), and HP (HR = 0.30, p < 0.001). Patients with at least one reported ILD exacerbation as a reason for hospitalisation had a median survival time of 7.3 years (range 0.1 to 34.4 years) compared to 19.6 years (range 0.3 to 19.6 years) in patients without exacerbations (HR = 0.39, p < 0.001). CONCLUSION Disease progression is common in all ILD and associated with increased mortality. Most important risk factors for progression are impaired baseline forced vital capacity and higher age, as well as acute exacerbations and respiratory hospitalisations for mortality. Early detection of progression remains challenging, further clinical criteria in addition to PFT might be helpful.
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Affiliation(s)
- Katharina Buschulte
- Center for Interstitial and Rare Lung Diseases, Thoraxklinik, University of Heidelberg, German Center for Lung Research (DZL), Heidelberg, Germany.
| | - Hans-Joachim Kabitz
- Medical Clinic II, Pneumology and Intensive Care Medicine, Klinikum Konstanz, Konstanz, Germany
| | - Lars Hagmeyer
- Clinic of Pneumology and Allergology, Center of Sleep Medicine and Respiratory Care, Hospital Bethanien Solingen, Solingen, Germany
| | | | | | | | - Dirk Skowasch
- Department of Medicine II, University Hospital Bonn, Bonn, Germany
| | | | - Marcus Joest
- Outpatient center for pulmonology and allergology, Bonn, Germany
| | | | - Marc Höffgen
- Outpatient center for pulmonology, Rheine, Germany
| | - Phillen Maqhuzu
- Institute of Health Economics and Healthcare Management, Helmholtz Center Munich GmbH, German Research Center for Environmental Health, German Center for Lung Research (DZL), Comprehensive Pneumology Center Munich (CPCM), Neuherberg, Germany
| | - Larissa Schwarzkopf
- Institute of Health Economics and Healthcare Management, Helmholtz Center Munich GmbH, German Research Center for Environmental Health, German Center for Lung Research (DZL), Comprehensive Pneumology Center Munich (CPCM), Neuherberg, Germany
- IFT Institut für Therapieforschung, Center for Mental Health and Addiction Research, Munich, Germany
| | | | - Michael Pfeifer
- Medical Clinic II, University of Regensburg and Klinikum Donaustauf, Donaustauf, Germany
| | - Jürgen Behr
- Department of Medicine V, Comprehensive Pneumology Center, LMU University Hospital, LMU Munich, German Center for Lung Research (DZL), Munich, Germany
| | | | - Andreas Günther
- Medical Clinic II, University Hospital Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany
- Pulmonary and Critical Care Medicine, Agaplesion Evangelisches Krankenhaus Mittelhessen, Giessen, Germany
| | - Markus Polke
- Center for Interstitial and Rare Lung Diseases, Thoraxklinik, University of Heidelberg, German Center for Lung Research (DZL), Heidelberg, Germany
| | - Philipp Höger
- Center for Interstitial and Rare Lung Diseases, Thoraxklinik, University of Heidelberg, German Center for Lung Research (DZL), Heidelberg, Germany
| | - Vivien Somogyi
- Mainz Center for Pulmonary Medicine, Departments of Pneumology, ZfT, Mainz University Medical Center and of Pulmonary Critical Care & Sleep Medicine, Marienhaus Clinic Mainz, Mainz, Germany
| | - Christoph Lederer
- Center for Interstitial and Rare Lung Diseases, Thoraxklinik, University of Heidelberg, German Center for Lung Research (DZL), Heidelberg, Germany
| | - Philipp Markart
- Pulmonary and Critical Care Medicine, Agaplesion Evangelisches Krankenhaus Mittelhessen, Giessen, Germany
- Medical Clinic V (Pneumology), Cardiothoracic Center, University Medicine Marburg, Campus Fulda, Fulda, Germany
| | - Michael Kreuter
- Mainz Center for Pulmonary Medicine, Departments of Pneumology, ZfT, Mainz University Medical Center and of Pulmonary Critical Care & Sleep Medicine, Marienhaus Clinic Mainz, Mainz, Germany.
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Kouranos V, Wells AU. Monitoring of Sarcoidosis. Clin Chest Med 2024; 45:45-57. [PMID: 38245370 DOI: 10.1016/j.ccm.2023.08.002] [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] [Indexed: 01/22/2024]
Abstract
This article focuses on the monitoring of pulmonary sarcoidosis. The monitoring of sarcoidosis is, in part, focused on serial change in major organ involvement but also includes diagnostic re-evaluation and review of change in quality of life. Recent criteria for progression of fibrotic interstitial lung disease are adapted to pulmonary sarcoidosis. The frequency and nature of monitoring are discussed, integrating baseline risk stratification and strategic treatment goals. Individual variables used to identify changes in pulmonary disease severity are discussed with a focus on their flaws and the need for a multidimensional approach. Other key monitoring issues are covered briefly.
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Affiliation(s)
- Vasileios Kouranos
- Interstitial Lung Disease/Sarcoidosis Unit, Royal Brompton Hospital, Sydney street, London, SW3 6NP; National Heart and Lung Institute, Imperial College London, Guy Scadding Building, Cale Street, London, SW3 6LY.
| | - Athol Umfrey Wells
- Interstitial Lung Disease/Sarcoidosis Unit, Royal Brompton Hospital, Sydney street, London, SW3 6NP; National Heart and Lung Institute, Imperial College London, Guy Scadding Building, Cale Street, London, SW3 6LY
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Nunes H, Brillet PY, Bernaudin JF, Gille T, Valeyre D, Jeny F. Fibrotic Pulmonary Sarcoidosis. Clin Chest Med 2024; 45:199-212. [PMID: 38245367 DOI: 10.1016/j.ccm.2023.08.011] [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] [Indexed: 01/22/2024]
Abstract
Fibrotic pulmonary sarcoidosis (fPS) affects about 20% of patients. fPS carries a significant morbidity and mortality. However, its prognosis is highly variable, depending mainly on fibrosis extent, functional impairment severity, and the development of pulmonary hypertension. Moreover, fPS outcomes are also influenced by several other complications, including acute exacerbations, and infections. fPS natural history is unknown, in particular regarding the risk of progressive self-sustaining fibrosis. The management of fPS is challenging, including anti-inflammatory treatment if granulomatous activity persists, rehabilitation, and in highly selected patients antifibrotic treatment and lung transplantation.
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Affiliation(s)
- Hilario Nunes
- AP-HP, Pulmonology Department, Avicenne Hospital, Bobigny, 93009, France; INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, 93009, France.
| | - Pierre-Yves Brillet
- INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, 93009, France; AP-HP, Radiology Department, Avicenne Hospital, Bobigny, 93009, France
| | | | - Thomas Gille
- INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, 93009, France; AP-HP, Physiology Department, Avicenne Hospital, Bobigny, 93009, France
| | - Dominique Valeyre
- INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, 93009, France; Groupe Hospitalier Paris Saint-Joseph, Pulmonology Department, Paris, 75014 France
| | - Florence Jeny
- AP-HP, Pulmonology Department, Avicenne Hospital, Bobigny, 93009, France; INSERM UMR 1272, Sorbonne Paris-Nord University, Bobigny, 93009, France
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Tanizawa K, Handa T, Nagai S, Ikezoe K, Kubo T, Yokomatsu T, Ueda S, Fushimi Y, Ogino S, Hirai T, Izumi T. One-year lung function decline in sarcoidosis. Respir Investig 2024; 62:9-12. [PMID: 37925884 DOI: 10.1016/j.resinv.2023.09.005] [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: 03/22/2023] [Revised: 08/27/2023] [Accepted: 09/07/2023] [Indexed: 11/07/2023]
Abstract
BACKGROUND The definition of progressive pulmonary fibrosis is based on a 1-year lung function decline. OBJECTIVES To evaluate the epidemiology and clinical relevance of 1-year lung function decline in sarcoidosis. METHODS A retrospective observational study at a general sarcoidosis clinic. RESULTS Of the 198 patients, 42 (18.4 %) had a 1-year lung function decline (absolute 12-month decline in percentage predicted forced vital capacity [%FVC] of ≥5 % or percentage predicted diffusion capacity for carbon monoxide [%DLCO] of ≥10 %). A 1-year lung function decline was associated with a 2-year lung function decline (a relative 24-month decline in %FVC of ≥10 % or %DLCO of ≥15 %), which occurred in 13 (7.4 %) of the 175 patients with 24-month follow-up results. A 1-year lung function decline was not associated with survival; a 2-year lung function decline predicted mortality. CONCLUSIONS Compared with a 24-month decline, a 12-month decline in lung function did not predict worse survival in sarcoidosis.
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Affiliation(s)
| | - Tomohiro Handa
- Department of Respiratory Medicine, Japan; Department of Advanced Medicine for Respiratory Failure, Japan.
| | - Sonoko Nagai
- Clinical Research Center, Kyoto Central Clinic, Kyoto, Japan
| | | | - Takeshi Kubo
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Radiology, Tenri Hospital, Tenri, Japan
| | - Takafumi Yokomatsu
- Clinical Research Center, Kyoto Central Clinic, Kyoto, Japan; Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - Seigen Ueda
- Clinical Research Center, Kyoto Central Clinic, Kyoto, Japan
| | - Yasutaka Fushimi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shumpei Ogino
- Clinical Research Center, Kyoto Central Clinic, Kyoto, Japan
| | | | - Takateru Izumi
- Clinical Research Center, Kyoto Central Clinic, Kyoto, Japan
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Caporarello N, Ligresti G. Vascular Contribution to Lung Repair and Fibrosis. Am J Respir Cell Mol Biol 2023; 69:135-146. [PMID: 37126595 PMCID: PMC10399144 DOI: 10.1165/rcmb.2022-0431tr] [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: 11/06/2022] [Accepted: 05/01/2023] [Indexed: 05/03/2023] Open
Abstract
Lungs are constantly exposed to environmental perturbations and therefore have remarkable capacity to regenerate in response to injury. Sustained lung injuries, aging, and increased genomic instability, however, make lungs particularly susceptible to disrepair and fibrosis. Pulmonary fibrosis constitutes a major cause of morbidity and is often relentlessly progressive, leading to death from respiratory failure. The pulmonary vasculature, which is critical for gas exchanges and plays a key role during lung development, repair, and regeneration, becomes aberrantly remodeled in patients with progressive pulmonary fibrosis. Although capillary rarefaction and increased vascular permeability are recognized as distinctive features of fibrotic lungs, the role of vasculature dysfunction in the pathogenesis of pulmonary fibrosis has only recently emerged as an important contributor to the progression of this disease. This review summarizes current findings related to lung vascular repair and regeneration and provides recent insights into the vascular abnormalities associated with the development of persistent lung fibrosis.
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Affiliation(s)
- Nunzia Caporarello
- Department of Medicine, Stritch School of Medicine, Loyola University Chicago, Chicago, Illinois; and
| | - Giovanni Ligresti
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
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Correlation of monocyte counts with clinical outcomes in idiopathic nonspecific interstitial pneumonia. Sci Rep 2023; 13:2804. [PMID: 36797265 PMCID: PMC9935501 DOI: 10.1038/s41598-023-28638-5] [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: 11/16/2022] [Accepted: 01/23/2023] [Indexed: 02/18/2023] Open
Abstract
Higher blood monocyte counts are related to worse survival in idiopathic pulmonary fibrosis. However, studies evaluating the association between blood monocyte counts and clinical outcomes of idiopathic nonspecific interstitial pneumonia (iNSIP) are lacking. We evaluated the impact of monocyte counts on iNSIP prognosis. iNSIP patients (n = 126; median age, 60 years; female, n = 64 [50.8%]) diagnosed by surgical lung biopsy were enrolled and categorized into low (monocyte < 600/µL) and high (monocyte ≥ 600/µL) monocyte groups. The median follow-up duration was 53.0 months. After adjusting for age, sex, and smoking history, the annual decline in forced vital capacity (FVC) showed differences between the monocyte groups (Pinteraction = 0.006) (low vs. high; - 28.49 mL/year vs. - 65.76 mL/year). The high-monocyte group showed a worse survival rate (P = 0.01) compared to low monocyte group. The 5-year survival rates were 83% and 72% in the low- and high-monocyte groups, respectively. In the Cox-proportional hazard analysis, older age, male sex, low baseline FVC, and diffusing capacity of the lung for carbon monoxide were independent risk factors for mortality. However, monocyte count (Hazard ratio 1.61, P = 0.126) was not an independent prognostic factor. Although high monocyte count might be associated with faster lung function decline, it could not independently predict survival in iNSIP.
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Stanel SC, Rivera-Ortega P. Present and future perspectives in early diagnosis and monitoring for progressive fibrosing interstitial lung diseases. Front Med (Lausanne) 2023; 10:1114722. [PMID: 36873896 PMCID: PMC9975385 DOI: 10.3389/fmed.2023.1114722] [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: 12/02/2022] [Accepted: 01/26/2023] [Indexed: 02/17/2023] Open
Abstract
Progressive fibrosing interstitial lung diseases (PF-ILDs) represent a group of conditions of both known and unknown origin which continue to worsen despite standard treatments, leading to respiratory failure and early mortality. Given the potential to slow down progression by initiating antifibrotic therapies where appropriate, there is ample opportunity to implement innovative strategies for early diagnosis and monitoring with the goal of improving clinical outcomes. Early diagnosis can be facilitated by standardizing ILD multidisciplinary team (MDT) discussions, implementing machine learning algorithms for chest computed-tomography quantitative analysis and novel magnetic-resonance imaging techniques, as well as measuring blood biomarker signatures and genetic testing for telomere length and identification of deleterious mutations in telomere-related genes and other single-nucleotide polymorphisms (SNPs) linked to pulmonary fibrosis such as rs35705950 in the MUC5B promoter region. Assessing disease progression in the post COVID-19 era also led to a number of advances in home monitoring using digitally-enabled home spirometers, pulse oximeters and other wearable devices. While validation for many of these innovations is still in progress, significant changes to current clinical practice for PF-ILDs can be expected in the near future.
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Affiliation(s)
- Stefan Cristian Stanel
- Interstitial Lung Disease (ILD) Unit, North West Lung Centre, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Wythenshawe, United Kingdom.,Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Pilar Rivera-Ortega
- Interstitial Lung Disease (ILD) Unit, North West Lung Centre, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Wythenshawe, United Kingdom
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Mononen M, Saari E, Hasala H, Kettunen HP, Suoranta S, Nurmi H, Kärkkäinen M, Selander T, Randell J, Laurikka J, Uibu T, Koskela H, Kaarteenaho R, Purokivi M. Reticulation pattern without honeycombing on high-resolution CT is associated with the risk of disease progression in interstitial lung diseases. BMC Pulm Med 2022; 22:313. [PMID: 35965320 PMCID: PMC9375921 DOI: 10.1186/s12890-022-02105-9] [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: 05/29/2022] [Accepted: 08/09/2022] [Indexed: 11/10/2022] Open
Abstract
Background The disease course of idiopathic pulmonary fibrosis (IPF) is progressive and occasionally, other types of interstitial lung disease (ILD) may progress similarly to IPF. This study aimed to evaluate risk factors for disease progression within 24 months in patients with various ILDs. Methods This prospective study obtained 97 patients with a suspected ILD who underwent a transbronchial lung cryobiopsy. The extent of several high-resolution computed tomography (HRCT) patterns was assessed. Due to the inclusion criteria the study population presented a low extent of honeycombing and definite usual interstitial pneumonia (UIP) pattern on HRCT suggesting an early stage of ILD. Disease progression within 24 months despite treatment was defined as a relative decline of ≥ 10% in forced vital capacity (FVC), or a relative decline in FVC of ≥ 5% and one of the three additional criteria: (1) a decline in diffusion capacity to carbon monoxide (DLCO) ≥ 15%; (2) increased fibrosis on HRCT; (3) progressive symptoms, or progressive symptoms and increased fibrosis on HRCT. The same definition was utilized in patients with IPF and other ILDs. Risk factors for disease progression were evaluated in a multivariable logistic regression model. Results Disease progression was revealed in 52% of the patients with ILD, 51% of the patients with IPF, and 53% of the patients with other types of ILD. A high extent of reticulation on HRCT (Odds ratio [OR] 3.11, 95% Confidence interval [CI] 1.21–7.98, P = 0.019) and never smoking (OR 3.11, CI 1.12–8.63, P = 0.029) were associated with disease progression whereas platelet count (OR 2.06 per 100 units increase, CI 0.96–4.45, P = 0.065) did not quite reach statistical significance. Conclusion Higher extent of reticulation on HRCT and never smoking appeared to associate with the risk of disease progression within 24 months in ILD patients without honeycombing. Approximately half of the patients with ILD revealed disease progression, and similar proportions were observed in patients with IPF and in other types of ILD. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-022-02105-9.
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Castro HM, Maritano Furcada J, Enghelmayer JI. Relative Versus Absolute Decline in Forced Vital Capacity in Progressive Pulmonary Fibrosis. Arch Bronconeumol 2022; 58:843-844. [DOI: 10.1016/j.arbres.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 07/03/2022] [Accepted: 07/04/2022] [Indexed: 11/15/2022]
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Molina-Molina M, Kreuter M, Cottin V, Corte TJ, Gilberg F, Kirchgaessler KU, Axmann J, Maher TM. Efficacy of Pirfenidone vs. Placebo in Unclassifiable Interstitial Lung Disease, by Surgical Lung Biopsy Status: Data From a post-hoc Analysis. Front Med (Lausanne) 2022; 9:897102. [PMID: 35783648 PMCID: PMC9247211 DOI: 10.3389/fmed.2022.897102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/16/2022] [Indexed: 12/02/2022] Open
Abstract
Approximately 12–13% of patients with interstitial lung disease (ILD) are diagnosed with unclassifiable ILD (uILD), often despite thorough evaluation. A recent Phase 2 study (NCT03099187) described a significant effect of pirfenidone vs. placebo on forced vital capacity (FVC) measured by site spirometry in patients with progressive fibrosing uILD (hereafter referred to as the pirfenidone in uILD study). Here, we present the results from a post-hoc analysis of this study to assess patient baseline characteristics and the efficacy of pirfenidone vs. placebo analyzed by surgical lung biopsy (SLB) status. Mean FVC (mL) change over 24 weeks was included as a post-hoc efficacy outcome. Of 253 randomized patients, 88 (34.8%) had a SLB and 165 (65.2%) did not. Baseline characteristics were generally similar between SLB subgroups; however, patients who had a SLB were slightly younger and had a higher 6-min walk distance than those without a SLB. Mean FVC change over 24 weeks for pirfenidone vs. placebo was −90.9 vs. −146.3 mL, respectively, in patients who had a SLB, and 8.2 vs. −85.3 mL, respectively, in patients without a SLB. Overall, the results from the post-hoc analysis identified that pirfenidone may be an effective treatment in progressive fibrosing uILD over 24 weeks, irrespective of SLB status; however, caution should be taken when interpreting these data due to several limitations. There are differences in the treatment effect of pirfenidone between the subgroups that require further pathological and radiological investigation. In this manuscript, we also descriptively compared baseline characteristics from the overall pirfenidone in uILD study population with other uILD populations reported in the literature, with the aim of understanding if there are any similarities or differences within these cohorts. Most baseline characteristics for patients in the pirfenidone in uILD study were within the ranges reported in the literature; however, ranges were wide, highlighting the heterogeneity of uILD populations.
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Affiliation(s)
- Maria Molina-Molina
- ILD Unit, Respiratory Department, University Hospital of Bellvitge, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain
- Centro de Investigación Biomédica en Red Enfermedades Respiratorias (CIBERES), Madrid, Spain
- *Correspondence: Maria Molina-Molina
| | - Michael Kreuter
- Center for Interstitial and Rare Lung Diseases, Dep-Pneumonology, Thoraxklinik, University of Heidelberg, Heidelberg, Germany
- German Center for Lung Research, Heidelberg, Germany
| | - Vincent Cottin
- National Reference Coordinating Center for Rare Pulmonary Diseases, Louis Pradel Hospital, Hospices Civils de Lyon, Member of ERN-LUNG, Lyon, France
- IVPC, Université Claude Bernard Lyon 1, UMR754, INRAE, Lyon, France
| | - Tamera J. Corte
- Department of Respiratory Medicine, Royal Prince Alfred Hospital, University of Sydney, Sydney, NSW, Australia
- Medical School, University of Sydney, Camperdown, NSW, Australia
| | | | | | | | - Toby M. Maher
- Interstitial Lung Disease Unit, Royal Brompton Hospital, London, United Kingdom
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Hastings Center for Pulmonary Research and Division of Pulmonary, Critical Care and Sleep Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
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