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Naseem R, Howe N, Williams CJ, Pretorius S, Green K. What diagnostic tests are available for respiratory infections or pulmonary exacerbations in cystic fibrosis: A scoping literature review. Respir Investig 2024; 62:817-831. [PMID: 39024929 DOI: 10.1016/j.resinv.2024.07.005] [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: 05/03/2024] [Revised: 07/02/2024] [Accepted: 07/06/2024] [Indexed: 07/20/2024]
Abstract
A scoping review methodological framework formed the basis of this review. A search of two electronic databases captured relevant literature published from 2013. 1184 articles were screened, 200 of which met inclusion criteria. Included studies were categorised as tests for either respiratory infections OR pulmonary exacerbations. Data were extracted to ascertain test type, sample type, and indication of use for each test type. For infection, culture is the most common testing method, particularly for bacterial infections, whereas PCR is utilised more for the diagnosis of viral infections. Spirometry tests, indicating lung function, facilitate respiratory infection diagnoses. There is no clear definition of what an exacerbation is in persons with CF. A clinical checklist with risk criteria can determine if a patient is experiencing an exacerbation event, however the diagnosis is clinician-led and will vary between individuals. Fuchs criteria are one of the most frequently used tests to assess signs and symptoms of exacerbation in persons with CF. This scoping review highlights the development of home monitoring tests to facilitate earlier and easier diagnoses, and the identification of novel biomarkers for indication of infections/exacerbations as areas of current research and development. Research is particularly prevalent regarding exhaled breath condensate and volatile organic compounds as an alternative sampling/biomarker respectively for infection diagnosis. Whilst there are a wide range of tests available for diagnosing respiratory infections and/or exacerbations, these are typically used clinically in combination to ensure a rapid, accurate diagnosis which will ultimately benefit both the patient and clinician.
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Affiliation(s)
- Raasti Naseem
- NIHR Newcastle HealthTech Research Centre in Diagnostic and Technology Evaluation, Fourth floor William Leech Building, Newcastle University, Newcastle upon Tyne, NE2 4HH, United Kingdom
| | - Nicola Howe
- NIHR Newcastle HealthTech Research Centre in Diagnostic and Technology Evaluation, Fourth floor William Leech Building, Newcastle University, Newcastle upon Tyne, NE2 4HH, United Kingdom.
| | - Cameron J Williams
- NIHR Newcastle HealthTech Research Centre in Diagnostic and Technology Evaluation, Fourth floor William Leech Building, Newcastle University, Newcastle upon Tyne, NE2 4HH, United Kingdom
| | - Sara Pretorius
- NIHR Newcastle HealthTech Research Centre in Diagnostic and Technology Evaluation, Fourth floor William Leech Building, Newcastle University, Newcastle upon Tyne, NE2 4HH, United Kingdom
| | - Kile Green
- NIHR Newcastle HealthTech Research Centre in Diagnostic and Technology Evaluation, Fourth floor William Leech Building, Newcastle University, Newcastle upon Tyne, NE2 4HH, United Kingdom
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Zanette B, Greer MLC, Moraes TJ, Ratjen F, Santyr G. The argument for utilising magnetic resonance imaging as a tool for monitoring lung structure and function in pediatric patients. Expert Rev Respir Med 2023; 17:527-538. [PMID: 37491192 DOI: 10.1080/17476348.2023.2241355] [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: 04/03/2023] [Revised: 07/06/2023] [Accepted: 07/24/2023] [Indexed: 07/27/2023]
Abstract
INTRODUCTION Although historically challenging to perform in the lung, technological advancements have made Magnetic Resonance Imaging (MRI) increasingly applicable for pediatric pulmonary imaging. Furthermore, a wide array of functional imaging techniques has become available that may be leveraged alongside structural imaging for increasingly sensitive biomarkers, or as outcome measures in the evaluation of novel therapies. AREAS COVERED In this review, recent technical advancements and modern methodologies for structural and functional lung MRI are described. These include ultrashort echo time (UTE) MRI, free-breathing contrast agent-free, functional lung MRI, and hyperpolarized gas MRI, amongst other techniques. Specific examples of the application of these methods in children are provided, principally drawn from recent research in asthma, bronchopulmonary dysplasia, and cystic fibrosis. EXPERT OPINION Pediatric lung MRI is rapidly growing, and is well poised for clinical utilization, as well as continued research into early disease detection, disease processes, and novel treatments. Structure/function complementarity makes MRI especially attractive as a tool for increased adoption in the evaluation of pediatric lung disease. Looking toward the future, novel technologies, such as low-field MRI and artificial intelligence, mitigate some of the traditional drawbacks of lung MRI and will aid in improving access to MRI in general, potentially spurring increased adoption and demand for pulmonary MRI in children.
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Affiliation(s)
- Brandon Zanette
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Mary-Louise C Greer
- Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Medical Imaging, University of Toronto, Toronto, ON, Canada
| | - Theo J Moraes
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Pediatrics, Hospital for Sick Children, Toronto, ON, Canada
| | - Felix Ratjen
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON, Canada
- Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Giles Santyr
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
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Allen L, Allen L, Carr SB, Davies G, Downey D, Egan M, Forton JT, Gray R, Haworth C, Horsley A, Smyth AR, Southern KW, Davies JC. Future therapies for cystic fibrosis. Nat Commun 2023; 14:693. [PMID: 36755044 PMCID: PMC9907205 DOI: 10.1038/s41467-023-36244-2] [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: 02/07/2022] [Accepted: 01/20/2023] [Indexed: 02/10/2023] Open
Abstract
We are currently witnessing transformative change for people with cystic fibrosis with the introduction of small molecule, mutation-specific drugs capable of restoring function of the defective protein, cystic fibrosis transmembrane conductance regulator (CFTR). However, despite being a single gene disorder, there are multiple cystic fibrosis-causing genetic variants; mutation-specific drugs are not suitable for all genetic variants and also do not correct all the multisystem clinical manifestations of the disease. For many, there will remain a need for improved treatments. Those patients with gene variants responsive to CFTR modulators may have found these therapies to be transformational; research is now focusing on safely reducing the burden of symptom-directed treatment. However, modulators are not available in all parts of the globe, an issue which is further widening existing health inequalities. For patients who are not suitable for- or do not have access to- modulator drugs, alternative approaches are progressing through the trials pipeline. There will be challenges encountered in design and implementation of these trials, for which the established global CF infrastructure is a major advantage. Here, the Cystic Fibrosis National Research Strategy Group of the UK NIHR Respiratory Translational Research Collaboration looks to the future of cystic fibrosis therapies and consider priorities for future research and development.
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Affiliation(s)
| | | | - Siobhan B Carr
- Royal Brompton & Harefield Hospital, Guy's & St Thomas' Trust, London, UK
- National Heart & Lung Institute, Imperial College London, London, UK
| | - Gwyneth Davies
- UCL Great Ormond Street Institute of Child Health, University College London, London, UK
- Great Ormond Street Hospital for Children, London, UK
| | - Damian Downey
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | | | - Julian T Forton
- Noah's Ark Children's Hospital for Wales, Cardiff, UK
- School of Medicine, Cardiff University, Cardiff, UK
| | - Robert Gray
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
- Western General Hospital, Edinburgh, UK
| | - Charles Haworth
- Royal Papworth Hospital and Department of Medicine, Cambridge, UK
- University of Cambridge, Cambridge, UK
| | - Alexander Horsley
- Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK
- Manchester Adult CF Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Alan R Smyth
- School of Medicine, University of Nottingham, Nottingham, UK
- NIHR Nottingham Biomedical Research Centre, Nottingham, UK
| | - Kevin W Southern
- Department of Women's and Children's Health, University of Liverpool, Liverpool, UK
- Institute in the Park, Alder Hey Children's Hospital, Liverpool, UK
| | - Jane C Davies
- Royal Brompton & Harefield Hospital, Guy's & St Thomas' Trust, London, UK.
- National Heart & Lung Institute, Imperial College London, London, UK.
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Colombo C, Cipolli M, Daccò V, Medino P, Alghisi F, Ambroni M, Badolato R, Battistini F, Bignamini E, Casciaro R, Ciciriello F, Collura M, Comello I, Francalanci M, Ficili F, Folino A, Leonardi S, Leonetti G, Lucanto MC, Lucca F, Maschio M, Mencarini V, Messore B, Pisi G, Pizzamiglio G, Poli P, Raia V, Riberi L, Ros M, Rotolo N, Sepe A, Taccetti G, Vitullo P, Alicandro G. Clinical course and risk factors for severe COVID-19 among Italian patients with cystic fibrosis: a study within the Italian Cystic Fibrosis Society. Infection 2022; 50:671-679. [PMID: 34874541 PMCID: PMC8649681 DOI: 10.1007/s15010-021-01737-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 11/23/2021] [Indexed: 12/28/2022]
Abstract
PURPOSE To describe the clinical course of COVID-19 in patients with cystic fibrosis (CF) and to identify risk factors for severe COVID-19. METHODS We conducted a prospective study within the Italian CF Society. CF centers collected baseline and follow-up data of patients with virologically confirmed SARS-CoV-2 infection between March 2020 and June 2021. Odds ratios (ORs) for severe SARS-CoV-2 (as defined by hospital admission) were estimated by logistic regression models. RESULTS The study included 236 patients with positive molecular test for SARS-CoV-2. Six patients died, 43 patients were admitted to hospital, 4 admitted to intensive care unit. Pancreatic insufficiency was associated with increased risk of severe COVID-19 (OR 4.04, 95% CI 1.52; 10.8). After adjusting for age and pancreatic insufficiency, forced expiratory volume in one second (FEVp) < 40% (OR 4.54, 95% CI 1.56; 13.2), oxygen therapy (OR 12.3, 95% CI 2.91-51.7), underweight (OR 2.92, 95% CI 1.12; 7.57), organ transplantation (OR 7.31, 95% CI 2.59; 20.7), diabetes (OR 2.67, 95% CI 1.23; 5.80) and liver disease (OR 3.67, 95% CI 1.77; 7.59) were associated with increased risk of severe COVID-19, while use of dornase alfa was associated with a reduced risk (OR 0.34, 95% CI 0.13-0.88). No significant changes were observed in FEVp from baseline to a median follow-up of 2 months (median difference: 0, interquartile range: - 4; 5, P = 0.62). CONCLUSION Clinical features indicative of severe form of CF are associated with increased risk of COVID-19 hospitalization. SARS-CoV-2 infected patients do not experience a deterioration of respiratory function.
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Affiliation(s)
- Carla Colombo
- Pediatric Cystic Fibrosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Commenda 9, 20122, Milano, Italy.
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano, Italy.
| | - Marco Cipolli
- Cystic Fibrosis Center, Azienda Opedaliera-Universitaria Integrata Di Verona, Verona, Italy
| | - Valeria Daccò
- Pediatric Cystic Fibrosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Commenda 9, 20122, Milano, Italy
| | - Paola Medino
- Pediatric Cystic Fibrosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Commenda 9, 20122, Milano, Italy
| | - Federico Alghisi
- Cystic Fibrosis Center, Ospedale Pediatrico Bambin Gesù, Roma, Italy
| | - Maura Ambroni
- Cystic Fibrosis Center, Ospedale Maurizio Bufalini, Cesena, Italy
| | - Raffaele Badolato
- Cystic Fibrosis Center, ASST Spedali Civili Di Brescia and Università Degli Studi Di Brescia, Brescia, Italy
| | | | - Elisabetta Bignamini
- Pediatric Cystic Fibrosis Center, Ospedale Infantile Regina Margherita, Torino, Italy
| | - Rosaria Casciaro
- Cystic Fibrosis Center, Istituto Giannina Gaslini, Genova, Italy
| | | | - Mirella Collura
- Cystic Fibrosis Center, Ospedale Giovanni Di Cristina, Palermo, Italy
| | - Isabella Comello
- Cystic Fibrosis Support Center, Ospedale S. Maria Di Ca' Foncello, Treviso, Italy
| | - Michela Francalanci
- Cystic Fibrosis Center, Azienda Opedaliero-Universitaria Meyer, Firenze, Italy
| | - Francesca Ficili
- Cystic Fibrosis Center, Ospedale Giovanni Di Cristina, Palermo, Italy
| | - Anna Folino
- Pediatric Cystic Fibrosis Center, Ospedale Infantile Regina Margherita, Torino, Italy
| | - Salvatore Leonardi
- Cystic Fibrosis Center, Azienda Opedaliero-Universitaria Policlinico Vittorio Emanuele, Catania, Italy
| | - Giuseppina Leonetti
- Pediatric Cystic Fibrosis Center, Azienda Universitaria Ospedaliera Consorziale Policlinico, Bari, Italy
| | - Maria Cristina Lucanto
- Cystic Fibrosis Hub Center, Azienda Ospedaliera Universitaria Policlinico G. Martino, Messina, Italy
| | - Francesca Lucca
- Cystic Fibrosis Center, Azienda Opedaliera-Universitaria Integrata Di Verona, Verona, Italy
| | - Massimo Maschio
- Cystic Fibrosis Center, IRCCS Materno Infantile Burlo Garofolo, Trieste, Italy
| | - Valeria Mencarini
- Cystic Fibrosis Center, Presidio Ospedaliero di Gubbio e Gualdo Tadino, Gubbio, Italy
| | - Barbara Messore
- Adult Cystic Fibrosis Center, Azienda Ospedaliero-Universitaria San Luigi Gonzaga, Orbassano, Italy
| | - Giovanna Pisi
- Cystic Fibrosis Center, Azienda Opedaliero-Universitaria di Parma, Parma, Italy
| | - Giovanna Pizzamiglio
- Adult Cystic Fibrosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Piercarlo Poli
- Cystic Fibrosis Center, ASST Spedali Civili Di Brescia and Università Degli Studi Di Brescia, Brescia, Italy
| | - Valeria Raia
- Cystic Fibrosis Center, Azienda Opedaliera-Universitaria Federico II, Napoli, Italy
| | - Luca Riberi
- Adult Cystic Fibrosis Center, Azienda Ospedaliero-Universitaria San Luigi Gonzaga, Orbassano, Italy
| | - Mirco Ros
- Cystic Fibrosis Support Center, Ospedale S. Maria Di Ca' Foncello, Treviso, Italy
| | - Novella Rotolo
- Cystic Fibrosis Center, Azienda Opedaliero-Universitaria Policlinico Vittorio Emanuele, Catania, Italy
| | - Angela Sepe
- Cystic Fibrosis Center, Azienda Opedaliera-Universitaria Federico II, Napoli, Italy
| | - Giovanni Taccetti
- Cystic Fibrosis Center, Azienda Opedaliero-Universitaria Meyer, Firenze, Italy
| | - Pamela Vitullo
- Cystic Fibrosis Support Center, Ospedale G. Tatarella di Cerignola, Cerignola, Italy
| | - Gianfranco Alicandro
- Pediatric Cystic Fibrosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Commenda 9, 20122, Milano, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano, Italy
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Bresnick K, Arteaga-Solis E, Millar SJ, Laird G, LeCamus C. Burden of cystic fibrosis in children <12 years of age prior to the introduction of CFTR modulator therapies. BMJ Open Respir Res 2021; 8:8/1/e000998. [PMID: 34857524 PMCID: PMC8640656 DOI: 10.1136/bmjresp-2021-000998] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 10/19/2021] [Indexed: 11/21/2022] Open
Abstract
Background Cystic fibrosis (CF) is a genetic, multisystemic, progressive and life-shortening disease caused by mutations in the CF transmembrane conductance regulator (CFTR) gene. Different genotypes have been linked to variations in disease progression among people with CF. The burden of illness (BOI) in children with CF is incompletely characterised, particularly as it relates to CFTR genotypes prior to the availability of the first CFTR modulators. This retrospective, cross-sectional, descriptive study evaluated the BOI in US children with CF <12 years of age prior to the first approval of CFTR modulators. Methods Data from the US Cystic Fibrosis Foundation Patient Registry from 2011 were used to summarise key patient and disease characteristics using descriptive statistics, overall and grouped by age (0 to <2 years, 2 to <6 years and 6 to <12 years) and genotype (F508del/F508del, F508del/minimal function (MF), MF/MF, gating mutation on ≥1 allele, residual function mutation on ≥1 allele and R117H on ≥1 allele) group. Results The analysis included 9185 children. Among 6-year-olds to <12-year-olds, mean (SD) per cent predicted FEV1 in 1 s was 92.6% (17.5%). Among all children <12 years of age, the mean (SD) all-cause hospitalisation and pulmonary exacerbation rates in 2011 were 0.4 (1.0) and 0.3 (0.8), respectively. Most (93.6%) had ≥1 positive lung microbiology culture. CF-related medication and nutritional supplementation use was common across all ages and genotypes. More than half (54.7%) had ≥1 CF-related complication. Evidence of disease burden was observed across the age and genotype groups studied. Conclusions Prior to the approval of the first CFTR modulator therapies in children <12 years of age, CF was associated with substantial BOI from an early age—including respiratory infections, hospitalisations/pulmonary exacerbations, need for supplemental nutrition and pharmacological treatments—irrespective of genotype.
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Affiliation(s)
- Kathryn Bresnick
- Real World Evidence, Vertex Pharmaceuticals Incorporated, Boston, Massachusetts, USA
| | - Emilio Arteaga-Solis
- Global Medical Affairs, Vertex Pharmaceuticals Incorporated, Boston, Massachusetts, USA
| | - Stefanie J Millar
- Biostatistics & Medical Writing, ICON PLC, North Wales, Pennsylvania, USA
| | - Glen Laird
- Biostatistics, Vertex Pharmaceuticals Incorporated, Boston, Massachusetts, USA
| | - Cecile LeCamus
- Global Medical Affairs, Vertex Pharmaceuticals Incorporated, Boston, Massachusetts, USA
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Abstract
PURPOSE OF REVIEW Radiological imaging has a crucial role in pulmonary evaluation in cystic fibrosis (CF), having been shown to be more sensitive than pulmonary function testing at detecting structural lung changes. The present review summarizes the latest published information on established and evolving pulmonary imaging techniques for assessing people with this potentially life-limiting disorder. RECENT FINDINGS Chest computed tomography (CT) has taken over the predominant role of chest radiography in many centres for the initial assessment and surveillance of CF lung disease. However, several emerging techniques offer a promising means of pulmonary imaging using less ionizing radiation. This is of particular importance given these patients tend to require repeated imaging throughout their lives from a young age. Such techniques include ultra-low-dose CT, tomosynthesis, dynamic radiography and magnetic resonance imaging. In addition, deep-learning algorithms are anticipated to improve diagnostic accuracy. SUMMARY The recent introduction of triple-combination CF transmembrane regulator therapy has put further emphasis on the need for sensitive methods of monitoring treatment response to allow for early adaptation of treatment regimens in order to limit irreversible lung damage. Further research is needed to establish how emerging imaging techniques can contribute to this safely and effectively.
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