- ICH GCP
- Registro de ensaios clínicos dos EUA
- Ensaio Clínico NCT03817333
The Mixed Phenotype of Asthma and COPD: the Overlap Syndrome
The Mixed Phenotype of Asthma and COPD: the Overlap Syndrome: A Comparison of Asthma Outcomes in Smoking vs Non-smoking Patients With an Incomplete Reversibility of Airway Obstruction (IRAO)
RATIONALE:
In asthmatic subjects, smoking can lead to several changes in disease characterictics. in smokers of more than 20 pack-years, chronic obstructive pulmonary disease (COPD) can be associated with asthma, also called asthma-COPD overlap syndrome (ACOS). Increasing data support the concept that ACOS is a clinical entity. However, this should be further studied in order to better target therapy.
AIM:
The objective of this study is to evaluate the comparative features of ACOS
METHODS:
This will be a descriptive study comparing the features of the ACOS with the features of asthmatic subjects with an incomplete reversibility of airway obstruction (IRAO).The study will be done over 1 or 2 visits (within a week interval), according to subjects' availability. The visit will include completion of different questionnaires (asthma control asthma quality of life, medical history, exacerbations, etc.), a thoracic examination, allergy skin-prick tests, spirometry and bronchodilator response, lung volumes and compliance measurements, exhaled nitric oxide measurement, blood sampling and a sputum induction.
Visão geral do estudo
Tipo de estudo
Inscrição (Real)
Contactos e Locais
Locais de estudo
-
-
-
Quebec, Canadá, G1V 4G5
- Institut Universitaire de cardiologie et de pneumologie de Quebec
-
-
Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Método de amostragem
População do estudo
Descrição
Inclusion Criteria:
ALL SUBJECTS
- Subjects aged 45 years and older.
- Free of any other respiratory condition, except for asthma and/or COPD, which may interfere with the tests.
- Asthma that requires a baseline treatment with inhaled corticosteroids and/or additional asthma medication.
- Free of respiratory infection in the 4 weeks preceding the study.
- No changes in the asthma and COPD-related medications in the 4 weeks preceding the study.
- If female, not pregnant (or lactating).
- Able to adhere to study procedures.
- Able and willing to provide written informed consent to participate in the study, in accordance with international conference on harmonization (ICH) good clinical practice (GCP) requirements.
ACOS SUBJECTS
1. Smokers or ex-smokers of at least 20 pack-years. 2. With an IRAO (see definitions section). IRAO SUBJECTS
- Long-life non-smokers or ex-smokers defined as someone who smoked less than 5 pack-years and who completely stopped smoking for at least 12 months before inclusion in the study.
- With an IRAO.
Exclusion Criteria:
ALL SUBJECTS
- With COPD without a past diagnosis of asthma.
- Unstable respiratory or non-respiratory condition.
- Any active chronic inflammatory disease.
- Any evidence of malignancy (active and/or treated) within the previous 5 years.
- Any significant concomitant illness or injury that would interfere with the subject's participation in the study.
- Any history of bronchial thermoplasty. IRAO SUBJECTS
- Use of any nicotine containing product within 1 year prior to study entry or a smoking history of > 5 pack-years.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
Coortes e Intervenções
Grupo / Coorte |
|---|
|
ACOS smoking history >20 pack-years
Subjects with asthma-COPD overlap syndrome
|
|
IRAO smoking history <5 pack-years
Subjects with an incomplete reversibility of airway obstruction
|
O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Total asthma control questionnaire (ACQ) score
Prazo: Baseline
|
Measurement of asthma control using a 0-6 scale.
The questionnaire includes 6 questions.
Total score is the mean of the scores from all questions.
Total score ranges from 0 to 6.
A lower score is better.
|
Baseline
|
Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Spirometry results
Prazo: Baseline
|
Forced expiratory volume in one second (FEV1), forced vital capacity (FVC), FEV1/FVC
|
Baseline
|
|
Sputum eosinophil percentage
Prazo: Baseline
|
Percentage of sputum eosinophils
|
Baseline
|
|
Concentration of Blood biomarkers
Prazo: Baseline
|
alpha 1 antitrypsine, C-reactive protein (CRP), fibrinogen
|
Baseline
|
|
Asthma quality of life questionnaire (AQLQ) score
Prazo: Baseline
|
Measurement of asthma quality of life using the Mini asthma quality of life questionnaire.
It is a 7-point scale questionnaire (where 1 is greatest impairment and 7 is least impairment) containing 15 uqestions divided into 4 domains : symptoms (5 items), activity limitation (4 items), emotional function (3 items), and exposure to environmental stimuli (3 items).
during the last 2 weeks.
The overall score is the mean of all the responses.
Each domain score is calculated from the mean of the items that relate to it.
|
Baseline
|
|
Number of patients with comorbidities
Prazo: Baseline
|
gastro-oesophageal reflux disease (GERD), obstructive sleep apnea (OSA), anxiety, depression
|
Baseline
|
|
Number of asthma exacerbations in the previous year
Prazo: Baseline
|
emergency room (ER) visits, hospitalizations, oral corticosteroids treatment, unscheduled medical visits
|
Baseline
|
|
Change from baseline total Asthma Control Questionnaire (ACQ) score at one-year follow-up
Prazo: Baseline to one-year follow-up
|
Measurement of asthma control using a 0-6 scale.
The questionnaire includes 6 questions.
Total score is the mean of the scores from all questions.
Total score ranges from 0 to 6.
A lower score is better.
|
Baseline to one-year follow-up
|
|
Change from baseline number of exacerbations at one-year follow-up
Prazo: Baseline to one-year follow-up
|
emergency room (ER) visits, hospitalizations, oral corticosteroids treatment, unscheduled medical visits
|
Baseline to one-year follow-up
|
Colaboradores e Investigadores
Patrocinador
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Real)
Conclusão Primária (Real)
Conclusão do estudo (Real)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Real)
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- CÉR21047
Informações sobre medicamentos e dispositivos, documentos de estudo
Estuda um medicamento regulamentado pela FDA dos EUA
Estuda um produto de dispositivo regulamentado pela FDA dos EUA
Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .