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NCT04853225

Investigation of Chronic Obstructive Pulmonary Disease (COPD) Phenotypes and Endotypes in China

Completed Results posted Last updated 20 August 2025
What this trial tests

trial testing Prospective observational cohort study in Pulmonary Disease, Chronic Obstructive in 2,005 participants. Completed in 25 June 2024.

Timeline
22 April 2020
Primary endpoint
25 June 2024
25 June 2024

Quick facts

Lead sponsorGlaxoSmithKline
StatusCompleted
Study typeOBSERVATIONAL
Enrollment2,005
Start date22 April 2020
Primary completion25 June 2024
Estimated completion25 June 2024
Sites41 locations across China

Drugs / interventions tested

Conditions studied

Sponsor

GlaxoSmithKline — full company profile →

Who can join

Adults 50 to 80, any sex, with Pulmonary Disease, Chronic Obstructive. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Main Cohort: Rate of Moderate/Severe Exacerbations in COPD and Chronic Bronchitis Cohorts Secondary · Up to 30 months

Moderate exacerbations are defined as COPD exacerbations that require either systemic corticosteroids (intramuscular, intravenous, or oral) and/or antibiotics. Severe exacerbations are defined as COPD exacerbations requiring hospitalization (including intubation and admittance to an intensive care unit) or result in death. Exacerbation rate = number of moderate or sever exacerbation divided by total participants-years. Analysis performed using a generalized linear model assuming a negative binomial distribution with covariates of type of participants (i.e. GOLD I-IV and chronic bronchitis), ge

GroupValue95% CI
Participants With COPD - GOLD Grade I0.080.06 – 0.10
Participants With COPD - GOLD Grade II0.120.11 – 0.14
Participants With COPD - GOLD Grade III0.260.21 – 0.33
Participants With COPD - GOLD Grade IV0.350.25 – 0.49
Participants With Chronic Bronchitis0.020.01 – 0.04
Main Cohort: Change From Baseline in COPD Assessment Test (CAT) Score at Month 30 Secondary · Baseline (Day 1 of Month 1) and at Month 30

The CAT is a validated 8-items questionnaire developed for use in routine clinical practice to measure the health status of participants with COPD. Participants rate their experience on a 6-point scale, ranging from 0 (no impairment) to 5 (maximum impairment), higher score indicates greater impairment. A total CAT score was calculated by summing the non-missing scores of the eight items with a scoring range of 0 (no disease impact) to 40 (maximum disease impact). Higher scores indicated greater disease impact. Baseline value was the assessment with a non-missing value at Day 1 of Month 1. Chan

GroupValue95% CI
COPD Participants-0.9± 5.84
Participants With Chronic Bronchitis-2.3± 5.45
Never Smoker Healthy Control0.3± 2.46
Main Cohort: Absolute Values of CAT Score at Month 30 Secondary · At Month 30

The CAT is a validated 8-items questionnaire developed for use in routine clinical practice to measure the health status of participants with COPD. Participants rate their experience on a 6-point scale, ranging from 0 (no impairment) to 5 (maximum impairment), higher score indicates greater impairment. A total CAT score was calculated by summing the non-missing scores of the eight items with a scoring range of 0 (no disease impact) to 40 (maximum disease impact). Higher scores indicated greater disease impact.

GroupValue95% CI
COPD Participants7.5± 5.33
Participants With Chronic Bronchitis5.7± 4.18
Never Smoker Healthy Control1.3± 2.36
Main Cohort: Total Score of COPD Assessment in Primary Care to Identify Undiagnosed Respiratory Disease and Exacerbation Risk (CAPTURE) at Baseline Secondary · At Baseline (Day 1 of Month 1)

The CATPURE is a short, five-item questionnaire that can be easily completed by participants and are used to identify individuals who may have undiagnosed, clinically significant COPD. The algorithm is a simple summation of participants responses to each of the five items. For Question 1-4: Score 0 for 'No' and Score 1 for 'Yes'; Question 5: Score 0 for 'None', 1 for 'Once' and 2 for '2 or more'. Total score is ranging from 0 to 6, higher score means higher risk of COPD (0-1 is at low risk, 2-6 is at high risk). Baseline value was the assessment with a non-missing value at Day 1 of Month 1.

GroupValue95% CI
COPD Participants2.6± 1.48
Participants With Chronic Bronchitis2.0± 1.37
Never Smoker Healthy Control0.3± 0.55
Main Cohort: Total Score of CAPTURE at Month 18 Secondary · At Month 18

The CATPURE is a short, five-item questionnaire that can be easily completed by participants and are used to identify individuals who may have undiagnosed, clinically significant COPD. The algorithm is a simple summation of participants responses to each of the five items. For Question 1-4: Score 0 for 'No' and Score 1 for 'Yes'; Question 5: Score 0 for 'None', 1 for 'Once' and 2 for '2 or more'. Total score is ranging from 0 to 6, higher score means higher risk of COPD (0-1 is at low risk, 2-6 is at high risk).

GroupValue95% CI
COPD Participants2.5± 1.48
Participants With Chronic Bronchitis1.8± 1.49
Never Smoker Healthy Control0.4± 0.69
Main Cohort: Number of Participants With Any Clinically Important Deterioration (CID) Event and Its Components From Baseline to Month 6 Secondary · Baseline (Day 1 of Month 1) to Month 6

CID was defined as decrease of greater than or equal to (\>=) 100 milliliter (mL) in post-bronchodilator FEV1 or increase of \>=2 units in the CAT, or an occurrence of a moderate/severe exacerbation. CID was derived from three key clinical assessments: 1. moderate/severe exacerbations, 2. worsening of FEV1, and 3. worsening of health status using the CAT questionnaire. Baseline value was the assessment with a non-missing value at Day 1 of Month 1. A participant may have more than one CID components, hence total of participants with individual CID components may not match with participants with

Any CID
GroupValue95% CI
COPD Participants897
Participants With Chronic Bronchitis90
Never Smoker Healthy Control58
Exacerbation CID
GroupValue95% CI
COPD Participants153
Participants With Chronic Bronchitis1
Never Smoker Healthy Control0
FEV1 CID
GroupValue95% CI
COPD Participants431
Participants With Chronic Bronchitis55
Never Smoker Healthy Control36
CAT CID
GroupValue95% CI
COPD Participants567
Participants With Chronic Bronchitis53
Never Smoker Healthy Control31
Main Cohort: Number of Participants With Any CID Event and Its Components From Months 6 to 18 Secondary · Months 6 to 18

CID was defined as: decrease of greater than or equal to (\>=) 100 milliliter (mL) in post-bronchodilator FEV1 or increase of \>=2 units in the CAT, or an occurrence of a moderate/severe exacerbation. CID was derived from three key clinical assessments: 1. moderate/severe exacerbations, 2. worsening of FEV1, and 3. worsening of health status using the CAT questionnaire. A participant may have more than one CID components, hence total of participants with individual CID components may not match with participants with 'Any CID' category. Number of participants with any CID event and its componen

Any CID
GroupValue95% CI
COPD Participants1120
Participants With Chronic Bronchitis97
Never Smoker Healthy Control82
Exacerbation CID
GroupValue95% CI
COPD Participants211
Participants With Chronic Bronchitis0
Never Smoker Healthy Control0
FEV1 CID
GroupValue95% CI
COPD Participants524
Participants With Chronic Bronchitis64
Never Smoker Healthy Control42
CAT CID
GroupValue95% CI
COPD Participants794
Participants With Chronic Bronchitis52
Never Smoker Healthy Control60
Main Cohort: Number of Participants With Any CID Event and Its Components From Months 18 to 30 Secondary · Months 18 to 30

CID was defined as: decrease of greater than or equal to (\>=) 100 milliliter (mL) in post-bronchodilator FEV1 or increase of \>=2 units in the CAT, or an occurrence of a moderate/severe exacerbation. CID was derived from three key clinical assessments: 1. moderate/severe exacerbations, 2. worsening of FEV1, and 3. worsening of health status using the CAT questionnaire. A participant may have more than one CID components, hence total of participants with individual CID components may not match with participants with 'Any CID' category. Number of participants with any CID event and its componen

Any CID
GroupValue95% CI
COPD Participants1086
Participants With Chronic Bronchitis93
Never Smoker Healthy Control68
Exacerbation CID
GroupValue95% CI
COPD Participants177
Participants With Chronic Bronchitis2
Never Smoker Healthy Control0
FEV1 CID
GroupValue95% CI
COPD Participants594
Participants With Chronic Bronchitis61
Never Smoker Healthy Control37
CAT CID
GroupValue95% CI
COPD Participants771
Participants With Chronic Bronchitis54
Never Smoker Healthy Control48
Main Cohort: Number of Participants Who Died Secondary · Up to 30 months

Number of participants who died during study have been presented.

GroupValue95% CI
COPD Participants41
Participants With Chronic Bronchitis2
Never Smoker Healthy Control0
Sub-cohort: Change From Baseline in Evaluating Respiratory Symptoms in COPD (E-RS:COPD) Total Scores From Months 1 to 6 Secondary · Baseline (Day 1 of Month 1) and Months 1 to 6

E-RS: COPD is a subset of Exacerbations of Chronic pulmonary Disease Tool (EXACT). E-RS: COPD is a tool that consists of 11 items from the 14 item EXACT instrument. The domains include: respiratory symptoms-breathlessness (RS-BRL) comprised of 5 items (2 items scored from 0-4 and 3 items scored from 0-3); RS-cough and sputum (RS-CSP) comprised of 3 items(2 items scored from 0-4 and 1 item scored from 0-3);and RS-chest symptoms (RS-CSY) comprised of 3 items (scored from 0-4). The total score was calculated by taking sum of all individual 11 item scores, which ranges between 0-40 and higher scor

GroupValue95% CI
COPD Participants0.697± 3.6181
Participants With Chronic Bronchitis-0.018± 2.8032
Never Smoker Healthy Control0.020± 1.2256
Sub-cohort: Change From Baseline in E-RS:COPD Total Scores From Months 18 to 24 Secondary · Baseline (Day 1 of Month 1) and Months 18 to 24

E-RS: COPD is a subset of Exacerbations of Chronic pulmonary Disease Tool (EXACT). E-RS: COPD is a tool that consists of 11 items from the 14 item EXACT instrument. The domains include: respiratory symptoms-breathlessness (RS-BRL) comprised of 5 items (2 items scored from 0-4 and 3 items scored from 0-3); RS-cough and sputum (RS-CSP) comprised of 3 items(2 items scored from 0-4 and 1 item scored from 0-3);and RS-chest symptoms (RS-CSY) comprised of 3 items (scored from 0-4). The total score was calculated by taking sum of all individual 11 item scores, which ranges between 0-40 and higher scor

GroupValue95% CI
COPD Participants1.735± 4.6876
Participants With Chronic Bronchitis1.014± 4.3033
Never Smoker Healthy Control0.086± 1.3097
Sub-cohort: Number of Participants With Exacerbation of COPD Tool (EXACT) Events From Months 1 to 6 Secondary · Months 1 to 6

The EXACT is a 14-item daily diary designed to provide a measure of patient-reported symptoms of COPD exacerbation. An EXACT Total Score, ranging from 0 to 100, where higher scores indicate a more severe condition. EXACT events were defined as magnitude of responder for symptomatic events defined as acute, sustained symptomatic worsening of COPD, defined as an increase in EXACT score \>=9 points for 3 days or \>=12 points for 2 days, above Baseline (Baseline value is average of 7-day period \[Day 1 to 7\]). Number of participants with EXACT events observed from Months 1 to 6 have been presente

GroupValue95% CI
COPD Participants59
Participants With Chronic Bronchitis12
Never Smoker Healthy Control1

Sponsor's own description

This is a non-drug interventional cohort study, which aims to investigate the clinical, radiological and biological factors associated with disease progression in COPD in China. Participants will be recruited from multiple hospitals across Guangdong province categorized as Type A hospitals (those at prefecture-level and above) and Type B hospitals (those below prefecture-level).

Publications & conference data

3 peer-reviewed publications reference this trial (live from Europe PMC):

  1. Investigation of the Clinical, Radiological and Biological Factors Associated with Disease Progression, Phenotypes and Endotypes of COPD in China (COMPASS): study design, protocol and rationale.
    Liang Z, Zhong N, Chen R, Ma Q, et al · · 2021 · cited 10× · PMID 34527722 · DOI 10.1183/23120541.00201-2021
  2. Use of CAPTURE to Identify Individuals Who May or May Not Require Treatment for Chronic Obstructive Pulmonary Disease.
    Li Y, Wen F, Ma Q, Chen R, et al · · 2023 · cited 8× · PMID 37315325 · DOI 10.1164/rccm.202303-0504oc
  3. Predictors of COPD exacerbations differ between grades of airflow limitation.
    Lan Y, Chen R, Zheng J, Sun Y, et al · · 2026 · PMID 41668878 · DOI 10.1183/23120541.00035-2025

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Data sources for this page

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT04853225.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing