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Guilleminault L, Riou J, Pontier S, Sedkaoui K, Gagnadoux F, Trzepizur W. Chronic cough in patients with obstructive sleep apnoea: A prospective cohort study. Pulmonology 2024:S2531-0437(24)00057-6. [PMID: 38806367 DOI: 10.1016/j.pulmoe.2024.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/02/2024] [Accepted: 04/26/2024] [Indexed: 05/30/2024] Open
Affiliation(s)
- Laurent Guilleminault
- Department of Respiratory and Allergic Diseases, Toulouse University Hospital Centre, Toulouse, France; Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), Inserm U1291, University of Toulouse, CNRS U5282, France.
| | - Jérémie Riou
- Department of Biostatistics and Methodology, DRCI, University Hospital of Angers, Angers Cedex 9, France; MINT, UMR INSERM 1066, UMR CNRS 6021, University of Angers, France
| | - Sandrine Pontier
- Department of Respiratory and Allergic Diseases, Toulouse University Hospital Centre, Toulouse, France
| | - Kamila Sedkaoui
- Department of Respiratory and Allergic Diseases, Toulouse University Hospital Centre, Toulouse, France
| | - Frédéric Gagnadoux
- Department of Respiratory and Sleep Medicine, Angers University Hospital, Angers, France and INSERM, CNRS, MITOVASC, University of Angers, Angers, France
| | - Wojciech Trzepizur
- Department of Respiratory and Sleep Medicine, Angers University Hospital, Angers, France and INSERM, CNRS, MITOVASC, University of Angers, Angers, France
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2
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Smith JA. The Therapeutic Landscape in Chronic Cough. Lung 2024; 202:5-16. [PMID: 38127133 PMCID: PMC10896934 DOI: 10.1007/s00408-023-00666-y] [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: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023]
Abstract
In recent years, there has been a substantial increase in the development of antitussive therapies and the first new therapy, gefapixant has been licenced in Europe. This review describes current unlicenced treatments for chronic cough and details treatments currently in development for refractory chronic cough and cough in idiopathic pulmonary fibrosis, as well as compounds previously explored.
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Affiliation(s)
- Jaclyn A Smith
- Division of Immunology, Immunity to Infection and Respiratory Medicine, University of Manchester and Manchester Academic Health Science Centre, Wythenshawe Hospital, Southmoor Road, Manchester, M23 9LT, UK.
- Manchester University NHS Foundation Trust, Manchester, UK.
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3
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Bali V, Schelfhout J, Sher MR, Tripathi Peters A, Patel GB, Mayorga M, Goss D, Romano C(D. Patient-reported experiences with refractory or unexplained chronic cough: a qualitative analysis. Ther Adv Respir Dis 2024; 18:17534666241236025. [PMID: 38501735 PMCID: PMC10953008 DOI: 10.1177/17534666241236025] [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: 04/10/2023] [Accepted: 02/13/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND Chronic cough, defined as a cough lasting 8 or more weeks, affects up to 10% of adults. Refractory chronic cough (RCC) is a cough that is uncontrolled despite comprehensive investigation and treatment of comorbid conditions while unexplained chronic cough (UCC) is a cough with no identifiable cause despite extensive evaluation of comorbid conditions. RCC and UCC are often poorly controlled. Understanding individuals' lived experience of the symptoms and impacts of these conditions may guide therapeutic strategies. OBJECTIVES The primary objectives of this study were to assess respondents' perceptions of the key symptoms of RCC and UCC and the impacts of RCC and UCC and their symptoms on well-being, health-related quality of life, work productivity, and social relationships. DESIGN Qualitative study. METHODS This study enrolled 30 adults with physician-diagnosed RCC or UCC. Two trained qualitative researchers conducted individual, in-depth telephone interviews using a semi-structured interview guide. Interviews were audio-recorded, transcribed, coded, and systematically analyzed to identify content themes. RESULTS A total of 15 respondents with RCC and 15 with UCC were included in the study. Many respondents had RCC or UCC for a long duration (median 9 years, range: 0-24). Half of the respondents reported having a coughing episode at least once daily. Only 40% of respondents reported that medication had improved their symptoms. In over half of the respondents, RCC or UCC hindered communication, caused embarrassment, frustration, and worry, and lowered quality of life. Perceptions of meaningful treatment benefits in RCC or UCC varied widely across respondents. CONCLUSION RCC and UCC remained poorly managed in many individuals and were associated with a wide range of symptoms and cough triggers that hindered daily activities and reduced emotional well-being. Understanding individuals' lived experiences may inform the development of RCC and UCC therapeutic strategies.
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Affiliation(s)
- Vishal Bali
- Center for Observational and Real-World Evidence, Merck & Co. Inc., 351 North Sumneytown Pike, North Wales, PA 19454, USA
| | - Jonathan Schelfhout
- Center for Observational and Real-World Evidence, Merck & Co. Inc., Rahway, NJ, USA
| | | | | | - Gayatri B. Patel
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | | | - Diana Goss
- RTI Health Solutions, Research Triangle Park, NC, USA
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4
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Irwin RS, Madison JM. Gefapixant for Refractory or Unexplained Chronic Cough? JAMA 2023; 330:1335-1336. [PMID: 37694857 DOI: 10.1001/jama.2023.18508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Affiliation(s)
- Richard S Irwin
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Massachusetts Chan Medical School, Worcester
| | - J Mark Madison
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Massachusetts Chan Medical School, Worcester
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Kum E, Patel M, Diab N, Wahab M, Zeraatkar D, Chu DK, O'Byrne PM, Guyatt GH, Satia I. Efficacy and Tolerability of Gefapixant for Treatment of Refractory or Unexplained Chronic Cough: A Systematic Review and Dose-Response Meta-Analysis. JAMA 2023; 330:1359-1369. [PMID: 37694849 PMCID: PMC10495930 DOI: 10.1001/jama.2023.18035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/28/2023] [Indexed: 09/12/2023]
Abstract
Importance Gefapixant represents an emerging therapy for patients with refractory or unexplained chronic cough. Objective To evaluate the efficacy and tolerability of gefapixant for the treatment of adults with refractory or unexplained chronic cough. Data Sources MEDLINE, Embase, Cochrane Central Register of Controlled Trials, and Web of Science from November 2014 to July 2023. Study Selection Two reviewers independently screened for parallel and crossover randomized clinical trials (RCTs) that compared, in patients with refractory or unexplained chronic cough, either gefapixant with placebo, or 2 or more doses of gefapixant with or without placebo. Data Extraction and Synthesis Two reviewers independently extracted data. A frequentist random-effects dose-response meta-analysis or pairwise meta-analysis was used for each outcome. The GRADE (Grading of Recommendations, Assessment, Development, and Evaluation) approach was used to rate the certainty in whether patients would perceive the effects as important (greater than the minimal important difference [MID]) or small (less than the MID). Main Outcomes and Measures Cough frequency (measured using the VitaloJAK cough monitor; MID, 20%), cough severity (measured using the 100-mm visual analog scale [VAS]; higher score is worse; MID, 30 mm), cough-specific quality of life (measured using the Leicester Cough Questionnaire [LCQ]; score range, 3 [maximal impairment] to 21 [no impairment]; MID, 1.3 points), treatment-related adverse events, adverse events leading to discontinuation, and taste-related adverse events. Results Nine RCTs including 2980 patients were included in the primary analysis. Compared with placebo, gefapixant (45 mg twice daily) had small effects on awake cough frequency (17.6% reduction [95% CI, 10.6%-24.0%], moderate certainty), cough severity on the 100-mm VAS (mean difference, -6.2 mm [95% CI, -4.1 to -8.4]; high certainty), and cough-specific quality of life on the LCQ (mean difference, 1.0 points [95% CI, 0.7-1.4]; moderate certainty). Compared with placebo, gefapixant (45 mg twice daily) probably caused an important increase in treatment-related adverse events (32 more per 100 patients [95% CI, 13-64 more], moderate certainty) and taste-related adverse events (32 more per 100 patients [95% CI, 22-46 more], high certainty). High-certainty evidence suggests that gefapixant (15 mg twice daily) had small effects on taste-related adverse events (6 more per 100 patients [95% CI, 5-8 more]). Conclusions and Relevance Compared with placebo, gefapixant (45 mg orally twice daily) led to modest improvements in cough frequency, cough severity, and cough-specific quality of life but increased taste-related adverse events.
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Affiliation(s)
- Elena Kum
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Matthew Patel
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Nermin Diab
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Mustafaa Wahab
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Dena Zeraatkar
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Derek K Chu
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Paul M O'Byrne
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- Firestone Institute for Respiratory Health, St Joseph's Healthcare, Hamilton, Ontario, Canada
| | - Gordon H Guyatt
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Imran Satia
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- Firestone Institute for Respiratory Health, St Joseph's Healthcare, Hamilton, Ontario, Canada
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Saunders P, Wu Z, Fahy WA, Stewart ID, Saini G, Smith DJF, Braybrooke R, Stock C, Renzoni EA, Johnson SR, Jenkins RG, Belvisi MG, Smith JA, Maher TM, Molyneaux PL. The Burden and Impact of Cough in Patients with Idiopathic Pulmonary Fibrosis: An Analysis of the Prospective Observational PROFILE Study. Ann Am Thorac Soc 2023; 20:1267-1273. [PMID: 37159951 PMCID: PMC10502892 DOI: 10.1513/annalsats.202302-174oc] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/09/2023] [Indexed: 05/11/2023] Open
Abstract
Rationale: Cough is a commonly reported symptom in idiopathic pulmonary fibrosis (IPF) that negatively impacts patient-reported quality of life (QoL). However, both the burden of cough at diagnosis and the behavior of cough over time have not been systematically described in patients with IPF. Objectives: By utilizing data prospectively collected as part of the PROFILE study, we sought to assess cough burden and the impact that this has on QoL within a cohort of patients with newly diagnosed IPF. We also reexamined the previously described relationship between cough and mortality and the association of cough with the MUC5B promoter polymorphism. Methods: The PROFILE study is a multicenter, prospective, observational, longitudinal cohort study of incident IPF. Scores on the Leicester Cough Questionnaire (LCQ) were recorded at baseline in 632 subjects and then repeated 6 monthly in a subset (n = 216) of the cohort. Results: The median LCQ score at diagnosis was 16.1 (interquartile range, 6.5). LCQ scores remained stable over the subsequent year in the majority of patients. There was a weak association between LCQ score and baseline lung function, with worse cough-related QoL associated with more severe physiological impairment. Cough scores were not associated with subsequent mortality after correcting for baseline lung function. Furthermore, there was no relationship between LCQ score and MUC5B promoter polymorphism status. Conclusions: The burden of cough in IPF is high. Although cough is weakly associated with disease severity at baseline, cough-specific QoL, as measured by the LCQ, confers no prognostic value. Cough-specific QoL burden remains relatively stable over time and does not associate with MUC5B promoter polymorphism.
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Affiliation(s)
- Peter Saunders
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom
| | - Zhe Wu
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Royal Brompton and Harefield Hospitals, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - William A. Fahy
- Royal Brompton and Harefield Hospitals, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Iain D. Stewart
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Gauri Saini
- Centre for Respiratory Research, NIHR Biomedical Research Centre, Translational Medical Sciences, University of Nottingham, Nottingham, United Kingdom
| | - David J. F. Smith
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Royal Brompton and Harefield Hospitals, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Rebecca Braybrooke
- Centre for Respiratory Research, NIHR Biomedical Research Centre, Translational Medical Sciences, University of Nottingham, Nottingham, United Kingdom
| | - Carmel Stock
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Elisabetta A. Renzoni
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Royal Brompton and Harefield Hospitals, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Simon R. Johnson
- Centre for Respiratory Research, NIHR Biomedical Research Centre, Translational Medical Sciences, University of Nottingham, Nottingham, United Kingdom
| | - R. Gisli Jenkins
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Royal Brompton and Harefield Hospitals, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Maria G. Belvisi
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Respiratory and Immunology, BioPharmaceuticals Research and Development, AstraZeneca, Gothenburg, Sweden
| | - Jaclyn A. Smith
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Division of Infection, Immunity and Respiratory Medicine, The University of Manchester, Manchester, United Kingdom
| | - Toby M. Maher
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Hastings Centre for Pulmonary Research and Division of Pulmonary, Critical Care and Sleep Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Philip L. Molyneaux
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Royal Brompton and Harefield Hospitals, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
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7
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Friedrich C, Francke K, Birring SS, van den Berg JWK, Marsden PA, McGarvey L, Turner AM, Wielders P, Gashaw I, Klein S, Morice AH. The P2X3 receptor antagonist filapixant in patients with refractory chronic cough: a randomized controlled trial. Respir Res 2023; 24:109. [PMID: 37041539 PMCID: PMC10088222 DOI: 10.1186/s12931-023-02384-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/07/2023] [Indexed: 04/13/2023] Open
Abstract
BACKGROUND P2X3 receptor antagonists seem to have a promising potential for treating patients with refractory chronic cough. In this double-blind, randomized, placebo-controlled study, we investigated the efficacy, safety, and tolerability of the novel selective P2X3 receptor antagonist filapixant (BAY1902607) in patients with refractory chronic cough. METHODS Following a crossover design, 23 patients with refractory chronic cough (age: 60.4 ± 9.1 years) received ascending doses of filapixant in one period (20, 80, 150, and 250 mg, twice daily, 4-days-on/3-days-off) and placebo in the other. The primary efficacy endpoint was the 24-h cough frequency on Day 4 of each dosing step. Further, subjective cough severity and health-related quality of life were assessed. RESULTS Filapixant at doses ≥ 80 mg significantly reduced cough frequency and severity and improved cough health-related quality of life. Reductions in 24-h cough frequency over placebo ranged from 17% (80 mg dose) to 37% (250 mg dose), reductions over baseline from 23% (80 mg) to 41% (250 mg) (placebo: 6%). Reductions in cough severity ratings on a 100-mm visual analog scale ranged from 8 mm (80 mg) to 21 mm (250 mg). No serious or severe adverse events or adverse events leading to discontinuation of treatment were reported. Taste-related adverse events occurred in 4%, 13%, 43%, and 57% of patients treated with filapixant 20, 80, 150, and 250 mg, respectively, and in 12% treated with placebo. CONCLUSIONS Filapixant proved to be efficacious, safe, and-apart from the occurrence of taste disturbances, especially at higher dosages-well tolerated during the short therapeutic intervention. Clinical trial registration EudraCT, eudract.ema.europa.eu, 2018-000129-29; ClinicalTrials.gov, NCT03535168.
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Affiliation(s)
- Christian Friedrich
- Research and Development, Pharmaceuticals, Bayer AG, 13353, Berlin, Germany.
| | - Klaus Francke
- Research and Development, Pharmaceuticals, Bayer AG, 13353, Berlin, Germany
| | - Surinder S Birring
- Centre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, Faculty of Life Sciences and Medicine and King's College Hospital, London, UK
| | | | - Paul A Marsden
- School of Biological Sciences, Faculty of Biology, Medicine and Health Sciences, University of Manchester and North West Lung Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Lorcan McGarvey
- Wellcome Wolfson Institute of Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Alice M Turner
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Pascal Wielders
- Department of Pulmonary Diseases, Catharina Hospital, Eindhoven, The Netherlands
| | - Isabella Gashaw
- Research and Development, Pharmaceuticals, Bayer AG, 13353, Berlin, Germany
| | - Stefan Klein
- Research and Development, Pharmaceuticals, Bayer AG, 13353, Berlin, Germany
| | - Alyn H Morice
- Hull York Medical School, University of Hull, Castle Hill Hospital, Cottingham, E Yorkshire, UK
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Dicpinigaitis PV. LUNG Year in Review: 2022. Lung 2023; 201:1-4. [PMID: 36717405 PMCID: PMC9886218 DOI: 10.1007/s00408-022-00594-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/31/2022] [Indexed: 02/01/2023]
Affiliation(s)
- Peter V Dicpinigaitis
- Albert Einstein College of Medicine and Montefiore Medical Center/Einstein Division, 1825 Eastchester Road, Bronx, NY, 10461, USA.
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