Overview
The goal of this study is to examine exacerbations of chronic obstructive pulmonary disease (COPD) caused by a common cold virus called rhinovirus, to identify new treatments. Exacerbations are flare-ups of respiratory symptoms which are a major cause of ill health in people with COPD, and are most commonly caused by viruses.
The main questions the study aims to answer are:
- What processes in the body occur in response to rhinovirus infection, and do the differences between people with COPD and healthy volunteers explain why people with COPD develop more severe illness and exacerbations?
- Can treatments be identified that target these processes to reduce the severity and frequency of exacerbations in people with COPD?
The study will compare eligible participants with COPD to healthy volunteers, and will involve intentionally infecting each participant with rhinovirus in a controlled environment. They will undergo baseline investigations prior to infection including a first bronchoscopy. Post-infection each participant will undergo a range of tests, including a second bronchoscopy, to compare how processes in the body, and especially the lungs, differ between people who do and do not have COPD.
Description
Study Rationale:
The investigators aim to understand the biological mechanisms that underlie exacerbations of Chronic Obstructive Pulmonary Disease (COPD) to drive the discovery of new treatments.
COPD is the 4th leading cause of death worldwide, causing 3.5 million deaths in 2021. Acute exacerbations of COPD (AECOPD) involve sudden flare-ups of symptoms, commonly triggered by viral infections, and are the major cause of COPD morbidity, mortality and healthcare costs. Developing new treatments for AECOPD requires a better understanding of the processes occurring in the lungs, before and during exacerbations. Naturally-occurring AECOPD are challenging to study in a way that allows reliable measurement of disease mechanisms, and repeated lung sampling can be impractical and potentially dangerous.
The investigators have therefore developed a human rhinovirus challenge experimental model of AECOPD. This involves infecting participants with a common cold virus called rhinovirus (RV). These studies have demonstrated that RV causes mild-to-moderate exacerbations in 95% of COPD subjects, that confounding factors can be controlled to take reliable measurements, and that repeated sampling of the lungs and respiratory tract can safely and easily be performed in a controlled research environment.
The investigators will compare people who have COPD with people who do not have COPD, including smokers and non-smokers, to identify the processes important in COPD. Researchers will measure a range of clinical and scientific outcomes, using cutting-edge 'multiomics' techniques to understand mechanisms in RV-induced AECOPD to an extent that has not been achieved before.
The crucial information that this study generates will be used to identify new treatments to reduce the frequency and severity of AECOPD. Data will be made publicly available for others to use and analyse, and will be integrated with other databases to maximise the scientific benefit that is gained from our participants' contribution to the project.
End of Study:
Follow up period of 42 days
Study Centres:
There will be 1 study centre: Imperial College Healthcare NHS Trust
Study Intervention:
All participants will be inoculated intra-nasally with rhinovirus-A16
Study Sample Size:
25 participants with mild/moderate COPD, 13 smoking controls, 12 non-smoking controls.
Study procedures
- Screening visit: lung function tests (FEV1, FVC and PEF), height and weight/BMI, Medical and surgical history, drug history, pregnancy test for females with childbearing potential, blood sample.
- Baseline visit: Baseline questionnaires, initiation of daily diary card, blood tests (including for haematology, biochemistry and coagulation), vital signs, physical examination, nasosorption, nasal lavage, nasal and oropharyngeal swabs, sputum collection, chest x-ray, electrocardiogram, lung function tests (FEV1, FVC, PEF), FeNO, airway oscillometry and skin prick testing.
- Baseline bronchoscopy: Bronchoscopy including bronchosorption, bronchioalveolar lavage, bronchial brushings and bronchial biopsies.
- Visit Day 0: Viral inoculation visit: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), airway oscillometry, FeNO, nasosorption, nasal and oropharyngeal swabs, nasal lavage, blood sampling, sputum collection, urine collection and intranasal RV-A16 challenge
- Visit Day 1: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), nasosorption, nasal and oropharyngeal swabs, nasal lavage, blood sampling, sputum collection, urine collection
- Visit Day 2: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), nasosorption, nasal and oropharyngeal swabs, nasal lavage, urine collection.
- Visit Day 3: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), airway oscillometry, FeNO, nasosorption, nasal and oropharyngeal swabs, nasal lavage, blood sampling, sputum collection, urine collection
- Visit Day 4: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), nasosorption, nasal and oropharyngeal swabs, nasal lavage, urine collection.
- Visit Day 5: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), airway oscillometry, FeNO, nasosorption, nasal and oropharyngeal swabs, nasal lavage, blood sampling, sputum collection, urine collection
- Visit Day 7 and Bronchoscopy: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), airway oscillometry, FeNO, nasosorption, nasal and oropharyngeal swabs, nasal lavage, blood sampling, urine collection and bronchoscopy including bronchosorption, bronchioalveolar lavage, bronchial brushings and bronchial biopsies
- Visit Day 9: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), airway oscillometry, FeNO, nasosorption, nasal and oropharyngeal swabs, nasal lavage, blood sampling, sputum collection, urine collection.
- Visit Day 12: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), airway oscillometry, FeNO, nasosorption, nasal and oropharyngeal swabs, nasal lavage, blood sampling, sputum collection, urine collection.
- Visit Day 15: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), airway oscillometry, FeNO, nasosorption, nasal and oropharyngeal swabs, nasal lavage, blood sampling, sputum collection, urine collection.
- Visit Day 21: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), airway oscillometry, FeNO, nasosorption, nasal and oropharyngeal swabs, nasal lavage, blood sampling, sputum collection.
- Visit Day 42: Vital signs, physical examination, lung function tests (FEV1, FVC, PEF), airway oscillometry, FeNO, nasosorption, nasal and oropharyngeal swabs, nasal lavage, blood sampling, sputum collection. On completion of this visit the participant will have finished the study and will no longer be enrolled.
Eligibility
Inclusion Criteria for COPD subjects
- Male or female sex
- Age ≥40 years and ≤75 years at the time of signing the consent form
- Medical history or clinical diagnosis of COPD
- Significant smoking history, defined as:
- Cumulative smoking history of at least 20 pack years
- Permitted to currently use, or have history of use of, e-cigarettes/vapes
- COPD spirometry criteria:
- Post bronchodilator FEV1 of \<80% and ≥50% predicted for age and height (equivalent to GOLD criteria stage 2 for 'Moderate' severity COPD9)
- Post-bronchodilator FEV1/FVC ratio \<0.7
- β-agonist reversibility: an improvement of less than 12% predicted FEV1 and less than 200mL after 200 micrograms of salbutamol or equivalent short acting beta-2 agonist bronchodilator.
- History of acute exacerbations of COPD as defined by the participant answering "yes" to the question: "do your COPD symptoms get noticeably worse when you catch a cold?"
- Clinically stable with no COPD exacerbations within 8 weeks prior to enrolment
- Permitted to take short and long-acting bronchodilators including beta agonists and muscarinic antagonist inhalers
- Co-morbidity criteria:
- Permitted to have a past medical history of asthma, allergic rhinitis and seasonal rhinitis, but not currently active within 8 weeks prior to enrolment
- Absence of current or previous history of significant respiratory disease, other than COPD, asthma and allergic rhinitis
- Permitted to have a positive skin test for atopy
Inclusion Criteria for non-smoking controls
- Male or female sex
- Age ≥ 40 years and ≤ 75 years at the time of signing the consent form
- No history or clinical diagnosis of COPD
- No significant smoking history, defined as:
- Less than 5 pack year cumulative smoking history
- Has not smoked or used e-cigarettes/vapes in the last 1 year
- Controls spirometry criteria
- FEV1 of ≥80% predicted for age and height
- FEV1/FVC ratio ≥0.7
- Co-morbidity criteria:
- Permitted to have a past medical history of asthma, allergic rhinitis and seasonal rhinitis, but not currently active in the 8 weeks prior to enrolment
- Absence of current or previous history of significant respiratory disease, other than asthma and allergic rhinitis
- Permitted to have a positive skin test for atopy.
Inclusion Criteria for smoking controls
• Identical to non-smoking controls, with the exception of smoking history:
- Cumulative smoking history of at least 20 pack years.
- Permitted to currently use, or have history of use of, e-cigarettes/vapes
Exclusion Criteria:
- Participants with other causes of chronic airflow limitation, including but not limited to:
- Bronchiectasis including cystic fibrosis
- Bronchiolitis obliterans
- Carcinoma of the bronchus
- Fibrosis such as tuberculosis (TB), idiopathic pulmonary fibrosis
- Presence of any significant systemic disease, that in the opinion of the investigator would (a) make participation in the study unduly risky, or (b) significantly interfere with important outcomes being measured.
- For example, cardiovascular, gastrointestinal, hepatic, renal, neurological, musculoskeletal, infectious, endocrine, metabolic, haematological, psychiatric conditions.
- Pregnant, planning to become pregnant, testing positive for pregnancy at the screening visit test, or nursing females during and within 30 days of treatment.
- Treatment with oral, inhaled or nasal corticosteroids within 8 weeks prior to enrolment.
- Treatment with antibiotics in the 8 weeks preceding enrolment.
- Treatment with nasal medications, anti-leukotrienes, anti-histamine at the time of the study.
- Presence (at screening) of serum rhinovirus-A16 neutralising antibodies in a titre \>1:2.
- Individuals with close contact to at risk patient group, including:
- Infants (less than 6 months);
- The extremely elderly or infirm;
- Pregnant and/or breastfeeding women;
- Patients with immunosuppression (e.g., human immunodeficiency virus (HIV), transplant recipients on anti-rejection medications, those undergoing chemo- or immuno-therapy).
- Other factors that in the opinion of the investigator are considered a risk.
- Participation in other clinical research studies that, in the opinion of the investigator, would (a) make participation in the study unduly risky, or (b) significantly interfere with important outcomes being measured in this or other studies, or (c) present an unacceptable visit burden to the participant.
