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Pulmonary Disease, Chronic ObstructiveNCT03018808

Prevalence of Chronic Obstructive Pulmonary Disease (COPD) and Eosinophilia Among Primary Care Patients

An observational study of Pulmonary Disease, Chronic Obstructive, run by GlaxoSmithKline at 4 sites in Brazil.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Early diagnosis and appropriate treatment for COPD subjects are both critical to minimize the progression of COPD and improve outcomes. Also, evidence suggests that high eosinophil (specific type of white blood cell that protects body against certain kinds of germs) level is associated with increased risk of both… Read more about this study

Who is it for?
Ages 35 years and older
Conditions the study is for
Pulmonary Disease, Chronic Obstructive
What is being tested?
Minimal questionnaire, Medical interview and CAT
Type of treatment
Surgery or procedure
How many people
800 participants
Where
4 sitesBrazil
Study dates
3 Jun 2019to 4 Oct 2021
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 35 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Subjects over 35 years, with at least one COPD risk factor, who visit the Basic Health Unit (BHU) for a routine, spontaneous or scheduled medical visit for any cause

Who may be able to join

  • Adult >= 35 years old
  • At least one of the following risk factors for COPD:
  • being a current smoker (who has smoked 100 cigarettes in his or her lifetime and who currently smokes cigarettes) or past smoker (who has smoked at least 100 cigarettes in his or her lifetime but who had quit smoking at the time of interview); Current or past exposure to biomass smoke, such as wood or coal, for cooking or heating (exposure >=100 hours/year
  • Capable of giving signed informed consent

Who cannot join

  • Physical or mental disability to complete the study procedures
  • Heart above 120 beats per minute
  • Participants under treatment for tuberculosis
  • Participant in current clinical trial
  • Pregnancy
  • Patients with one of the following contraindications to spirometry: chest surgery in the last month; abdominal surgery within the past three months; neuromuscular disease, acute coronary syndrome; retinal detachment; hospitalization for any cardiac problem in the prior 3 months.

Trial locations and contacts

4 sites in 1 country.

Brazil4 sites
  • GSK Investigational Site

    Araraquara, São Paulo, 14801-320

  • GSK Investigational Site

    Botucatu, São Paulo, 18618686

  • GSK Investigational Site

    Londrina, Paraná, 86039-440

  • GSK Investigational Site

    Porto Alegre, Rio Grande do Sul, 90610-000

Other trials in Brazil

About this study

Official title: A Cross-sectional Study to Characterize the Prevalence of COPD and Eosinophilia Among Primary Care Patients in Brazil

Early diagnosis and appropriate treatment for COPD subjects are both critical to minimize the progression of COPD and improve outcomes. Also, evidence suggests that high eosinophil (specific type of white blood cell that protects body against certain kinds of germs) level is associated with increased risk of both moderate and severe exacerbations in COPD subjects. To date, there is insufficient amount of data that describes the prevalence of COPD in Brazilian primary care units. Thus, this multicenter, cross-sectional study conducted in five centers located in five different Brazilian cities will provide estimation about the prevalence of COPD in primary care and will also determine the levels of eosinophils in subjects with confirmed COPD diagnosis. Approximately 2,500 eligible subjects are expected to be enrolled in the study.

Read the detailed description

The study is a cross sectional (prevalence study).

Being tested
Minimal questionnaire, Medical interview, CAT, Blood test, anthropometric measures
Keywords
Eosinophilia, COPD prevalence, Primary care subjects
Medical subject headings
Pulmonary Disease, Chronic Obstructive, Eosinophilia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Minimal questionnaireOther

    The minimal questionnaire is a reduced version of the medical interview and it will include questions about sociodemographic information, previous diagnosis of COPD, co-morbidities and smoking habits.

  • Medical interviewOther

    Medical interview includes medical history, sociodemographic and clinical information, including disease history, treatment history, smoking habits and use of biomass.

  • CATOther

    The CAT is a questionnaire for COPD patients and is designed to measure the impact of COPD on a person's life over time.

  • Blood testProcedure or surgery

    Blood samples will be collected at indicated time points

  • anthropometric measuresOther

    Anthropologic measures will be performed.

  • OximetryOther

    Digital pulse oximeter on the index finger after five minutes rest and before receiving bronchodilator for spirometry will be used to measure the pulse arterial oximetry. The average of three measurements at 10 second intervals will be recorded. The heart rate will be provided by the pulse oximeter.

Study groups in NCT03018808
Study groupRoleWhat they receive
Subjects met inclusion with at least one exclusion criteriaSubjects who meet all the inclusion criteria, but have at least one exclusion criteria or not agree to participate in the whole study will be invited to sign a special ICF in order to complete a minimal questionnaire.
Receives: Other: Minimal questionnaire; Other: CAT; Procedure: Blood test; Other: anthropometric measures; Other: Oximetry
Subjects who satisfy all inclusion/exclusion criteriaSubjects who satisfy all inclusion/exclusion criteria and agree to sign the ICF, an interview will be conducted for information regarding medical history, sociodemographic and clinical information, including disease history, treatment history, smoking habits and use of biomass.
Receives: Other: Medical interview; Other: CAT; Procedure: Blood test; Other: anthropometric measures; Other: Oximetry
Spirometry confirmed COPD SubjectsThe spirometry confirmed COPD patients will be requested to complete the COPD Assessment Test (CAT), self-administered questionnaire related to quality of life on COPD patients.
Receives: Other: Medical interview; Other: CAT

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of subjects with spirometry confirmed COPD diagnosis according to Fixed Ratio Criteria

    Spirometry confirmed COPD diagnosis according to fixed ratio criteria will be defined as those with post-Bronchodilatador (BD) Forced Expiratory Volume in 1 second (FEV1)/ Forced Vital Capacity (FVC) < 0.7 among the total of patients with valid spirometry. Spirometry tests will be performed at Baseline and 15 minutes after the administration of 400 microgram (mcg) Salbutamol.

    Measured: Day 1

  2. Number of subjects with spirometry confirmed COPD diagnosis according to Lower Limit of Normal (LLN) Criteria

    Spirometry confirmed COPD diagnosis according to Lower limit of normal (LNN) criteria will be defined as those with lower 5th percentile for predicted post-BD FEV1/FVC Spirometry tests will be performed at Baseline and 15 minutes after the administration of 400 mcg Salbutamol.

    Measured: Day 1

  3. Number of subjects who self-reported physician diagnosis of COPD

    Number of subjects that self-report physician diagnosis of emphysema, chronic bronchitis, or COPD.

    Measured: Day 1

  4. Number of subjects with under diagnosed COPD

    Number of subjects who meet the spirometry confirmed criteria of COPD (post-BD FEV1/FVC<0.7) but do not self-report medical diagnosis of emphysema, chronic bronchitis, or COPD.

    Measured: Day 1

  5. Number of subjects with physician COPD diagnosis

    Number of subjects who meet the spirometry confirmed criteria of COPD(post-BD FEV1/FVC<0.7) and self-report medical diagnosis of emphysema, chronic bronchitis, or COPD.

    Measured: Day 1

  6. Number of subjects with misdiagnosed COPD

    Number of subjects who do not meet the spirometry confirmed criteria of COPD but self-report diagnosis of emphysema, chronic bronchitis, or COPD.

    Measured: Day 1

Secondary outcomes (25)
  1. Number OF COPD subjects classified by Global Initiative for Chronic Obstructive Lung Disease (GOLD) Severity Groups

    COPD subjects will be classified using the following severity classification: GOLD 2007 (GOLD, 2007); GOLD 2013 (GOLD, 2013); GOLD 2017 (GOLD, 2017).

    Measured: Day 1

  2. Mean Charlson Comorbidity Index (CCI) score

    All comorbidities included in the CCI will be investigated. The CCI contains 19 categories of comorbidity and predicts the ten-year mortality for a subject who may have a range of co-morbid conditions.

    Measured: Day 1

  3. Descriptive statistics for COPD Assessment Test (CAT) score

    Mean, Median, Max-Min, Q1-Q3 for CAT score will be described.

    Measured: Day 1

  4. Number of subjects with mild exacerbation

    Mild exacerbation will be defined as the deterioration of breathing symptoms that affected usual daily activities self-reported by the subject.

    Measured: Day 1

  5. Number of subjects moderate exacerbation

    Moderate exacerbation will be defined as the one for which subjects need to take antibiotic and/or systemic corticosteroid due to increase of cough, phlegm or breathlessness.

    Measured: Day 1

  6. Number of subjects with severe exacerbation

    Proportion of patients that needed to be hospitalized due to increase of cough, phlegm or breathlessness

    Measured: Day 1

  7. Assessment of treatment used in the last 14 days and an last year

    Subjects will report the COPD medication used in the last 14 days and in the last year.

    Measured: Day 1

  8. Type of access to treatment

    Subject will report where the medication (s) were obtained from (Public Health System, commercial pharmacy, charity institution/church, Brazilian Popular Pharmacy Program, free sample, friends/family/neighbor or other) at the last time they need such medication.

    Measured: Day 1

  9. Number of subjects with Asthma-COPD Overlap (ACO)

    It will be considered two definitions for considering a patient with ACO: 1) Subjects with Spirometry confirmed COPD post- BD increase in FEV1 or FVC of 200 milliliter (mL) and 12 percent plus self-reported wheezing in the last 12 months reported on the medical interview among all subjects with spirometry confirmed COPD. 2) subjects having a spirometry confirmed COPD and self-reported asthma physician diagnosis among all subjects with spirometry confirmed COPD.

    Measured: Day 1

  10. Descriptive statistics for blood eosinophil's concentration

    Geometric mean accompanied with 95% confidence intervals

    Measured: Day 1

  11. Number of subjects with blood eosinophil's < 150, >= 150; <300 and >= 300 Cells/Microliter

    A 5 mL sample of venous blood will be collected from each subject in order to have the complete blood count with differential count.

    Measured: Day 1

  12. Number of subjects classified by Brazilian Society of Pulmonology and Physiology (SBPT) severity groups

    COPD subjects will be classified using the SBPT 2017 classification system.

    Measured: Day 1

  13. Descriptive statistics for FEV1

    Descriptive statistics for FEV1 will be summarized.

    Measured: Day 1

  14. Mean CCI score as a measure of clinical characteristics by ACO definitions

    All comorbidities included in the CCI will be investigated. The CCI contains 19 categories of comorbidity and predicts the ten-year mortality for a subject who may have a range of co-morbid conditions. Each condition is assigned a score of 1, 2, 3, or 6, depending on the risk of dying associated with each one.

    Measured: Day 1

  15. Descriptive statistics for CAT score as a measure of clinical characteristics by ACO definitions

    Mean, Median, Max-Min, Q1-Q3 for CAT score will be described.

    Measured: Day 1

  16. Descriptive statistics for FEV1 as a measure of clinical characteristics by ACO definitions

    Descriptive statistics for FEV1 will be summarized.

    Measured: Day 1

  17. Number of subjects with mild exacerbation by ACO definition

    Mild Exacerbation will be defined as the deterioration of breathing symptoms that affected usual daily activities self-reported by the subject.

    Measured: Day 1

  18. Number of subjects with moderate exacerbation by ACO definition

    Moderate exacerbation will be defined as the one for which subjects need to take antibiotic and/or systemic corticosteroid due to increase of cough, phlegm or breathlessness.

    Measured: Day 1

  19. Number of subjects with severe exacerbation by ACO definition

    Proportion of patients that needed to be hospitalized due to increase of cough, phlegm or breathlessness.

    Measured: Day 1

  20. Mean CCI score as a measure of clinical characteristics of eosinophil groups

    All comorbidities included in the CCI will be investigated. The CCI contains 19 categories of comorbidity and predicts the ten-year mortality for a subject who may have a range of co-morbid conditions.

    Measured: Day 1

  21. Descriptive statistics for CAT score as a measure of clinical characteristics of eosinophil groups

    Mean, Median, Max-Min, Q1-Q3 for CAT score will be described. Subjects identified with COPD will complete the CAT to measure the impact of COPD on a person's life.

    Measured: Day 1

  22. Descriptive statistics for FEV1 as a measure of clinical characteristics of eosinophil groups

    Descriptive statistics for FEV1 will be summarized.

    Measured: Day 1

  23. Number of subjects with mild exacerbation of eosinophil groups

    Mild Exacerbation will be defined as the deterioration of breathing symptoms that affected usual daily activities self-reported by the subject.

    Measured: Day 1

  24. Number of subjects with moderate exacerbation of eosinophil groups

    Moderate exacerbation will be defined as the one for which subjects need to take antibiotic and/or systemic corticosteroid due to increase of cough, phlegm or breathlessness.

    Measured: Day 1

  25. Number of subjects with severe exacerbation of eosinophil groups

    Proportion of patients that needed to be hospitalized due to increase of cough, phlegm or breathlessness.

    Measured: Day 1

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Jan 2017 (estimated)
  2. Study start3 Jun 2019
  3. Primary completion4 Oct 2021
  4. Study completion4 Oct 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Other
Time perspective
Cross-sectional
Enrolment
800 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03018808
Sponsor's protocol ID
207620
Status last verified
Apr 2022
First submitted
10 Jan 2017
Last updated
12 Apr 2022
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

An observational study of Pulmonary Disease, Chronic Obstructive, run by GlaxoSmithKline at 4 sites in Brazil.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 12 Apr 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in Brazil. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of subjects with spirometry confirmed COPD diagnosis according to Fixed Ratio Criteria (time frame: Day 1). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Apr 2022.

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