NCT03272932Active, not recruiting
Clinical Characteristics of Asthma and COPD Overlap for Patients With Asthma and COPD in Hong Kong
A Cross-sectional Study to Assess the Proportion and Clinical Characteristics of Asthma and COPD Overlap for Patients With Asthma and COPD in Hong Kong.
Source: ClinicalTrials.gov · Last updated 19 Mar 2026
Brief summary (registry, in English)
This study is to assess the prevalence of Asthma COPD Overlap in subjects with diagnosed asthma and chronic obstructive pulmonary disease (COPD). The subsequent morbidity and mortality of subjects will be followed up for 3 years.
- Status (registry)
- Active, not recruiting
- Study type
- Observational
- Enrollment
- 1600 (estimated)
- First submitted
- 1 Sept 2017
- Start date
- 15 Sept 2017
- Primary completion date
- 30 Dec 2025
- Lead sponsor
- Chinese University of Hong Kong
- NCT number
- NCT03272932
What you commit to
- Study type: Observational
- Planned participants: 1600
- From 15 Sept 2017 to the primary completion date, 30 Dec 2025
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Patients currently with acute exacerbation of COPD by GOLD definition (any worsening of a patient's respiratory symptoms that is beyond normal day-to-day variations and requires a change in medication) 1 or acute exacerbation of asthma by GINA guideline. 6
Other illness
- Patients with respiratory diseases that can show similar symptoms to chronic airway diseases such as bronchiectasis, tuberculosis (TB)-destroyed lung parenchyma, endobronchial TB, and lung cancer, or those who have history of these diseases based on physician's judgment
Other
- Patients currently diagnosed with pneumonia and acute bronchitis
- Patients currently randomized in other clinical studies
Who the study is looking for
- Subjects must fulfil all of the following criteria:
- All patients with confirmed diagnosis of COPD (post-bronchodilator FEV1/FVC\<0.7 based on the medical records) 1 or asthma (defined as those with a consistent history and prior documented evidence of variable airflow obstruction, with evidence of an increase in FEV1 greater than 12% or 400 mL following bronchodilator or bronchial hyperresponsiveness on bronchial provocation testing, when stable) 6
- Aged \>40 years old
- Signed written informed consent to participate in the study
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Prince of Wales Hospital Coordinator of this site? Confirm its status | Hong Kong | Hong Kong SAR China | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.