AzTrials
AzTrials

Pulmonary Disease, Chronic ObstructiveTETRISNCT04657211

Triple Therapy in Chronic Obstructive Pulmonary Disease (COPD) Participants

An observational study of Pulmonary Disease, Chronic Obstructive, run by GlaxoSmithKline at 1 site in Germany.

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

TETRIS is a multi-center, prospective observational cohort study. It will include participants with COPD who are on an existing combined treatment of long-acting muscarinic antagonist (LAMA), long-acting beta 2 agonists (LABA) and inhaled corticosteroids (ICS). Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Pulmonary Disease, Chronic Obstructive
What is being tested?
Prospective observational cohort study
How many people
1,212 participants
Where
1 siteGermany
Study dates
14 Jan 2021to 1 Jul 2024
Phase
Observational
Are there results?
Yes, posted in the registrySummary in the doctors' view

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

Study population: This study plans to recruit participants with moderate to severe COPD who have been on triple therapy for at least 6 and for a maximum of 18 weeks.

Who may be able to join

  • Participant is at least 18 years of age at the time of signing the informed consent.
  • Participant is on a SITT or MITT for treatment of an obstructive respiratory disease for a period of 6 to 18 weeks prior enrolment with a combination of inhaled LAMA, LABA and ICS either on a triple maintenance treatment or an intermediate triple therapy regime (ICS "on/off" or LAMA "on/off").
  • Inclusion criteria for Group A- (treatment by settled general practitioners): Participants are treated according to a physicians diagnosis of COPD.
  • Inclusion criteria for Group B and C- (treatment by settled pulmonologists or treatment by outpatient lung centers): Participants have a confirmed physician's diagnosis (diagnosis based on spirometry or body plethysmography) of COPD.
  • Participants need to give and be capable of giving signed informed consent form (ICF).

Who cannot join

  • Participant has a diagnosis of pure asthma, without clinical features of COPD.
  • Participant has a current diagnosis of lung cancer or lung metastasis.
  • Participant has a current primary diagnosis of diffuse pan-bronchiolitis, or a primary diagnosis of bronchiectasis or pulmonary fibrosis or cystic fibrosis or other significant respiratory disorders.
  • Participant is currently enrolled or has participated in a study within the last 90 days before signing of consent involving investigational study treatment intervention. If, while enrolled in the present study, the participant enrolls in another study involving investigational study treatment intervention, he/she will be withdrawn from the present study.
  • Recent (<= months) major cardiac or pulmonary event (for example myocardial infarction, pulmonary embolism).

Trial locations and contacts

1 site in 1 country.

Germany1 site
  • GSK Investigational Site

    Hanover, 30625

Other trials in Germany

About this study

Official title: Triple thErapy in paTients With COPD Under Real lIve Setting (the TETRIS Study)

TETRIS is a multi-center, prospective observational cohort study. It will include participants with COPD who are on an existing combined treatment of long-acting muscarinic antagonist (LAMA), long-acting beta 2 agonists (LABA) and inhaled corticosteroids (ICS).

Read the detailed description

COPD is a disabling respiratory disease characterized by airflow obstruction and associated symptoms, including breathing difficulties caused by shortness of breath and wheezing, airway hyperactivity, chronic cough, sputum production, exercise intolerance, and poor quality of life. In accordance with the GOLD (Global Initiative for Chronic Obstructive Lung Disease) recommendations, it is important to assess the characteristics and treatment patterns of participants prior to triple therapy initiation, in order to determine adherence to these guidelines and understand how participants progress to triple therapy. Despite a clearly defined guidance from GOLD treatment recommendations for the initiation and maintenance of triple therapy, treatment changes in Germany, including de-escalation, are often seen in treatment reality. This study is intended to gain a better understanding of what influences the treatment decision of German physicians in primary and secondary care under real life conditions, to elicit the reasons for treatment changes and to describe long-term outcomes with participants initiated on triple therapy over a period of two years. This study will also describe the temporal dynamics of treatment pattern and to unravel potentially complex participant's journeys in different German regions and also to identify and follow-up a variety of 'treatable traits' in COPD participants, which when modified may lead to improved health outcomes.

Being tested
Prospective observational cohort study
Keywords
COPD, LABA, LAMA, ICS, TETRIS
Medical subject headings
Pulmonary Disease, Chronic Obstructive

What participants receive

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

  • Prospective observational cohort studyOther

    prospective observational cohort study

Study groups in NCT04657211
Study groupRoleWhat they receive
Participants with chronic obstructive pulmonary disease (COPD)Participants with COPD, who will be treated with triple therapy (single inhaler triple therapy [SITT] or multiple inhaler triple therapy [MITT]) for at least 2 but not longer than 48 weeks will be enrolled in this study. No study treatment will be administered during conduct of this study.
Receives: Other: Prospective observational cohort study

What is being measured

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

  1. Percentage of Participants Who Continuously Received Triple Therapy for 6 Months

    Percentage of participants who continuously received triple therapy (SITT or MITT) for 6 months from visit 1 (Day 1 of Month 1) have been presented. Percentage values are rounded-off.

    Measured: From Day 1 (Month 1) up to 6 months

  2. Percentage of Participants Who Continuously Received Triple Therapy for 12 Months

    Percentage of participants who continuously received triple therapy (SITT or MITT) for 12 months from visit 1 (Day 1 of Month 1) have been presented. Percentage values are rounded-off.

    Measured: From Day 1 (Month 1) up to 12 months

  3. Percentage of Participants Who Continuously Received Triple Therapy for 24 Months

    Percentage of participants who continuously received triple therapy (SITT or MITT) for 24 months from visit 1 (Day 1 of Month 1) have been presented. Percentage values are rounded-off.

    Measured: From Day 1 (Month 1) up to 24 months

  4. Time to Stop Triple Therapy

    Time to stop triple therapy refers to the time duration from visit 1 at which a triple therapy (SITT or MITT) was safely and appropriately discontinued because its intended goals had been achieved, or no longer attainable, or risks outweighed the benefits. It was evaluated by Kaplan-Maier analysis.

    Measured: Up to 24 months

Secondary outcomes (52)
  1. Percentage of Participants With Diagnosis of Asthma at the Age of <40 Years

    Percentage of participants with diagnosis of asthma at the age of <40 years have been presented. Data was collected at Baseline visit on Day 1 of inclusion date to the study (Study Day 1). Percentage values are rounded-off.

    Measured: Baseline (Day 1)

  2. Percentage of Participants With Peripheral Blood Eosinophils (EOS) Count <100 Cells/uL, 100 to <200 Cells/uL, 200 to <300 Cells/uL and >=300 Cells/uL at Baseline

    Percentage of participants with peripheral blood EOS count less than (<) 100 cells per (/) micro liter (uL), 100 to <200 cells/uL, 200 to greater than (>) 300 cells/uL and greater than equal to (>=) 300 cells/uL have been presented. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Percentage values are rounded-off.

    Measured: Baseline (Day 1)

  3. Percentage of Participants With a Physician's Diagnosis of COPD by Site Localization

    Percentage of participants with a physician's diagnosis of COPD have been categorized according to the site localization i.e. East, North, South, and West Germany. Data was collected at Baseline visit on Day 1 of inclusion date to the study (Study Day 1). Percentage values are rounded-off.

    Measured: Baseline (Day 1)

  4. Percentage of Participants With a Physician's Diagnosis of COPD by Physicians Group

    Percentage of participants with a physician's diagnosis of COPD categorized by pneumologists and general practitioners have been presented. Data was collected at Baseline visit on Day 1 of inclusion date to the study (Study Day 1). Percentage values are rounded-off.

    Measured: Baseline (Day 1)

  5. Percentage of Participants With COPD Symptom and Risk Classes (GOLD 1 to 4) at Baseline

    COPD was classified using the Global Initiative for Chronic Obstructive Lung Disease (GOLD) criteria. Participants were classified based on symptom and risk of exacerbation, where GOLD 1 (mild COPD), GOLD 2 (moderate COPD), GOLD 3 (severe COPD) and GOLD 4 (very severe COPD). Data for percentage of participants with COPD symptom and risk classes (GOLD 1, GOLD 2, GOLD 3, and GOLD 4) have been presented. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Percentage values are rounded-off.

    Measured: Baseline (Day 1)

  6. Percentage of Participants With COPD Symptom and Risk Classes (GOLD A to D) at Baseline

    COPD was classified using the GOLD criteria. Participants are classified based on symptoms and risk of exacerbation, where GOLD A=Few symptoms low risk, GOLD B= More symptoms low risk, GOLD C= Few symptoms high risk and GOLD D= More symptoms high risk. Data for percentage of participants with COPD symptom and risk classes (GOLD A, GOLD B, GOLD C, and GOLD D) have been presented. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Percentage values are rounded-off.

    Measured: Baseline (Day 1)

  7. Percentage of Participants Who Received Concomitant Respiratory Medication at Months 6, 12 and 24

    Percentage of participants with non-missing concomitant respiratory medication received during the study are presented. Percentage of participants were categorized by the substance class of concomitant respiratory medication received by them which included oral glucocorticosteroids, leukotriene receptor antagonist, oral betamimetics, immunotherapy, antibiotics for respiratory indications, and other substances with cardiac or respiratory effects. Percentage values are rounded-off.

    Measured: At Months 6, 12 and 24

  8. Percentage of Participants by Their Duration of Triple Therapy Before Study Start

    Data for percentage of participants by their duration of triple therapy before study start have been presented. Data was categorized into following categories according to duration of triple therapy they received prior to study start: <3 months, 3 to <6 months, >=6 months. Percentage values are rounded-off.

    Measured: Up to 48 weeks before study start (Day 1 of Month 1)

  9. Percentage of Participants by Their Smoking Status at Months 6, 12 and 24

    Percentage of participants were categorized by their smoking status as Lifelong non-smoker, Current smoker and Previous smoker. Percentage values are rounded-off.

    Measured: At Months 6, 12 and 24

  10. Percentage of Participants With a Lifelong Non-smoking History at Baseline

    Percentage of participants with a lifelong non-smoking history at Baseline have been presented. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Percentage values are rounded-off.

    Measured: At Baseline (Day 1)

  11. Percentage of Participants With Forced Expiratory Volume in 1 Second (FEV1)/Forced Vital Capacity (FVC) Ratio (FEV1/FVC) of <0.7 at Study Enrollment and at 6, 12 and 24 Months

    FEV1 is a measure of lung function and is defined as the maximal amount of air that can be forcefully exhaled in one second. FVC is a measure of lung function and is defined as total amount of air that can be exhaled after taking a deep breath. FEV1 and FVC was measured using spirometry. FEV1/FVC ratio was calculated as FEV1/FVC ratio=FEV1/FVC*100. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Percentage of participants with FEV1/FVC value <0.7 have been presented. Percentage values are rounded-off.

    Measured: Baseline (Day 1), Months 6, 12, and 24

  12. Percentage of Participants With Any Moderate/Severe Exacerbation in the 24 Months Prior to Baseline or 3 Months Prior to Each Subsequent On-study Visits at Months 6, 12 and 24

    Moderate exacerbations are defined as COPD exacerbations that require either systemic corticosteroids and/or antibiotics. Severe exacerbations are defined as those requiring hospitalization (including intubation and admittance to an intensive care unit) or result in death. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Percentage of participants with any moderate/severe exacerbation in the 24 months prior to Baseline or 3 months prior to each subsequent on-study visits at Months 6, 12 and 24 have been presented. Percentage values are rounded-off.

    Measured: Up to 24 months prior to Baseline (Day 1); Up to 3 months prior to Month 6; Up to 3 months prior to Month 12; Up to 3 months prior to Month 24

  13. Percentage of Participants With a COPD Assessment Test (CAT) Score <=10, 11-19, >=20 at Baseline and at 6, 12 and 24 Months Documentation

    The CAT is a validated measure of health status in COPD. The CAT is an 8-item, patient-completed instrument that covers symptoms such as cough, phlegm, chest tightness, breathlessness, and disease impacts including physical activity, confidence, sleep and energy. Participants rate their experience on a 6-point scale, ranging from 0 (no impairment) to 5 (maximum impairment), higher score indicates greater impairment. A CAT sum 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. CAT sum score interpreted as <=10: low impact level, 11-19: Medium impact level, >=20: high impact level. Data for percentage of participants with CAT sum score of <=10, 11-19, and >=20 have been presented. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Percentage values are rounded-off.

    Measured: Baseline (Day 1), Months 6, 12, and 24

  14. Percentage of Participants With Peripheral Blood EOS Count of <300 and >=300 Cells/uL at 6, 12 and 24 Months

    Percentage of participants with peripheral blood EOS count of <300 cells/uL and >=300 cells/uL have been presented. Percentage values are rounded-off.

    Measured: At Months 6, 12, and 24

  15. Percentage of Participants With Chronic Bronchitis Phenotype

    Chronic bronchitis phenotype is one of the 'treatable traits' in COPD participants, which - when modified - might lead to improved health outcomes. Percentage of participants with chronic bronchitis phenotype have been presented. Percentage values are rounded-off.

    Measured: Up to 24 months

  16. Percentage of Participants With at Least One Switch From Triple Therapy to Long-acting Muscarinic Antagonist (LAMA)/Long-acting Beta Agonist (LABA) From Months 6 to 24

    Percentage of participants with at least one switch from triple therapy to LAMA/LABA from Months 6 to 24 have been presented. Percentage values are rounded-off.

    Measured: Months 6 to 24

  17. Percentage of Participants With at Least One Switch From Triple Therapy to Inhaled Corticosteroids (ICS)/LABA From Months 6 to 24

    Percentage of participants with at least one switch from triple therapy to ICS/LABA from Months 6 to 24 have been presented. Percentage values are rounded-off.

    Measured: Months 6 to 24

  18. Percentage of Participants With Reasons to Start COPD Triple Therapy in Overall and by Physician Group

    Percentage of participants with reasons to start COPD triple therapy in overall participants group have been presented. Reasons to start COPD triple therapy were documented in medical records by physicians. These reasons have been presented in separate categories. Also, data has been presented by type of physician (general practitioners [GP] and pneumologists) who documented these reasons. Percentage values are rounded-off.

    Measured: Up to 24 months

  19. Percentage of Participants With Change From Triple to Dual Therapy and Back to Triple Therapy (at Least One Re-escalation) During a 24-month Observation Period After Study Enrollment (Split by SITT and MITT)

    Percentage of participants with change from triple to dual therapy and back to triple therapy (re-escalation) during a 24-month observation period after study enrollment have been presented. Data has been presented in categories split by the type of triple therapy (SITT and MITT) initiated by participants prior to change. Percentage values are rounded-off.

    Measured: Up to 24 months

  20. Percentage of Participants With Change From Triple to Dual Therapy and Back to Triple Therapy (at Least One Re-escalation) During a 24-month Observation Period After Study Enrollment (Split by LAMA/LABA, ICS/LABA and ICS/LAMA)

    Percentage of participants with change from triple to dual therapy and back to triple therapy (at least one re-escalation) during a 24-month observation period after study enrollment have been presented. Data has been presented in categories split by the type of dual therapy (LAMA/LABA, ICS/LABA and ICS/LAMA) received by participant after change from triple therapy. Percentage values are rounded-off.

    Measured: Up to 24 months

  21. Percentage of Participants With at Least One Change From MITT to SITT or SITT to MITT During a 24-month Observation Period

    Percentage of participants with at least one change in their triple therapy from MITT to SITT or SITT to MITT during a 24-month observation period have been presented. Percentage values are rounded-off.

    Measured: Up to 24 months

  22. Percentage of Participants With at Least One Change From SITT to SITT or MITT to MITT During a 24-month Observation Period

    Percentage of participants with at least one change within their type of triple therapy - from SITT to SITT or MITT to MITT during a 24-month observation period have been presented. Percentage values are rounded-off.

    Measured: Up to 24 months

  23. Percentage of Participants With Change From Once Daily to Twice Daily or Twice Daily to Once Daily Medication

    Percentage of participants with change from once daily to twice daily or twice daily to once daily medication has been presented. Percentage values are rounded-off.

    Measured: Up to 24 months

  24. Percentage of Participants With a Change Between Different Inhaler Types

    Percentage of participants with a change between different inhaler types have been presented. Percentage values are rounded-off.

    Measured: Up to 24 months

  25. Percentage of Participants With Prespecified Reasons to Change a Triple Therapy (Either MITT or SITT) by Type of Physician Group

    Percentage of participants with prespecified reasons to change a triple therapy (TT) (either MITT or SITT) by type of physician group have been presented. Reasons to change a triple therapy were documented in medical records by physicians. These reasons are included in separate categories. Also, data has been presented by type of physician (general practitioners [GP] and pneumologists). Percentage values are rounded-off.

    Measured: Up to 24 months

  26. Percentage of Participants With Reasons for Change in Their Triple Therapy to Another Triple Therapy in Overall Participants

    Percentage of participants with reasons for change in their triple therapy to another triple therapy in overall participants group have been presented. Reasons for change in triple therapy to another triple therapy were documented in medical records by physician. These reasons are included in separate categories. Percentage values are rounded-off.

    Measured: Up to 24 months

  27. Percentage of Participants With Reasons for Change From Triple Therapy to Therapy De-escalation

    Percentage of participants with reasons for change from triple therapy to therapy de-escalation in overall participants group have been presented. A participant was classified as de-escalation, if there was at least one change from triple therapy to a therapy with just two components within the first 365 days of observation. Reasons for change from triple therapy to therapy de-escalation were documented in medical records by physicians. These reasons are included in separate categories. Percentage values are rounded-off.

    Measured: Up to 24 months

  28. Percentage of Participants With Reasons to Change De-escalated Therapy Back to Triple Therapy

    Percentage of participants with reasons to change de-escalated therapy back to triple therapy in overall participants group have been presented. A participant was classified as de-escalation, if there was at least one change from triple therapy to a therapy with just two components within the first 365 days of observation. Reasons to change de-escalated therapy back to triple therapy were documented in medical records by physicians. These reasons are included in separate categories. Percentage values are rounded-off.

    Measured: Up to 24 months

  29. Mean Annual Rate of Moderate and/or Severe Exacerbations in Overall Participants and by Their Peripheral Blood Eosinophil Count, Smoking Status and Asthma History

    The annual rate of moderate and severe chronic obstructive pulmonary disease (COPD) exacerbations during the study period (per participant per year) was assessed. Annualized rate of moderate and severe exacerbations was calculated as Annual exacerbation rate = total number of moderate or severe exacerbation/total person years. Moderate exacerbations are defined as COPD exacerbations that require either systemic corticosteroids and/or antibiotics. Severe exacerbations are defined as those requiring hospitalization (including intubation and admittance to an intensive care unit) or result in death. Data for mean annual rate of moderate and/or severe exacerbations is presented for overall participants, and by their peripheral EOS count (missing, <300 and >=300 cells/uL), smoking status (Lifelong non-smoker, Current and previous smoker) and asthma history (missing, yes, no and unknown).

    Measured: Up to 24 months

  30. Mean Annual Rate of Hospitalizations Due to Severe Exacerbations

    Severe exacerbations are defined as those requiring hospitalization (including intubation and admittance to an intensive care unit) or result in death. Annualized rate of hospitalization due to severe exacerbations was calculated as Annual hospitalization rate equal to (=) number of hospitalizations due to severe exacerbations divided by (/) total person years.

    Measured: Up to 24 months

  31. Change From Baseline in Forced Expiratory Volume in 1 Second (FEV1) in Overall Participants and by Their Peripheral Blood Eosinophil Count, Smoking Status and Asthma History at Month 6

    FEV1 is a measure of lung function and is defined as the volume of air that can be forced out in one second after taking a deep breath. FEV1 was measured electronically by spirometry. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Change from Baseline was calculated as the value at Month 6 minus the value at Baseline. Data for change from Baseline in FEV1 is presented for overall participants, and by their peripheral blood eosinophil count (missing, <300 and >=300 cells/uL), smoking history (Lifelong non-smoker, Current and previous smoker) and asthma history (missing, yes, no and unknown).

    Measured: Baseline (Day 1) and at Month 6

  32. Change From Baseline in FEV1 in Overall Participants and by Their Peripheral Blood Eosinophil Count, Smoking Status and Asthma History at Month 12

    FEV1 is a measure of lung function and is defined as the volume of air that can be forced out in one second after taking a deep breath. FEV1 was measured electronically by spirometry. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Change from Baseline was calculated as the value at Month 12 minus the value at Baseline. Data for change from Baseline in FEV1 is presented for overall participants, and by their peripheral blood eosinophil count (missing, <300 and >=300 cells/uL), smoking history (Lifelong non-smoker, Current and previous smoker) and asthma history (missing, yes, no and unknown).

    Measured: Baseline (Day 1) and at Month 12

  33. Change From Baseline in FEV1 in Overall Participants and by Their Peripheral Blood Eosinophil Count, Smoking Status and Asthma History at Month 24

    FEV1 is a measure of lung function and is defined as the volume of air that can be forced out in one second after taking a deep breath. FEV1 was measured electronically by spirometry. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Change from Baseline was calculated as the value at Month 24 minus the value at Baseline. Data for change from Baseline in FEV1 is presented for overall participants, and by their peripheral blood eosinophil count (missing, <300 and >=300 cells/uL), smoking history (Lifelong non-smoker, Current and previous smoker) and asthma history (missing, yes, no and unknown).

    Measured: Baseline (Day 1) and at Month 24

  34. Change From Baseline in Forced Vital Capacity (FVC) in Overall Participants and by Their Peripheral Blood Eosinophil Count, Smoking Status and Asthma History at Month 6

    FVC is a measure of lung function and is defined as total amount of air that can be exhaled after taking a deep breath. FVC was measured using spirometry. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Change from Baseline was calculated as the value at Month 6 minus the value at Baseline. Data for change from Baseline in FVC is presented for overall participants, and by their peripheral blood eosinophil count (missing, <300 and >=300 cells/uL), smoking history (Lifelong non-smoker, Current and previous smoker) and asthma history (missing, yes, no and unknown).

    Measured: Baseline (Day 1) and at Month 6

  35. Change From Baseline in FVC in Overall Participants and by Their Peripheral Blood Eosinophil Count, Smoking Status and Asthma History at Month 12

    FVC is a measure of lung function and is defined as total amount of air that can be exhaled after taking a deep breath. FVC was measured using spirometry. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Change from Baseline was calculated as the value at Month 12 minus the value at Baseline. Data for change from Baseline in FVC is presented for overall participants, and by their peripheral blood eosinophil count (missing, <300 and >=300 cells/uL), smoking history (Lifelong non-smoker, Current and previous smoker) and asthma history (missing, yes, no and unknown).

    Measured: Baseline (Day 1) and at Month 12

  36. Change From Baseline in FVC in Overall Participants and by Their Peripheral Blood Eosinophil Count, Smoking Status and Asthma History at Month 24

    FVC is a measure of lung function and is defined as total amount of air that can be exhaled after taking a deep breath. FVC was measured using spirometry. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Change from Baseline was calculated as the value at Month 24 minus the value at Baseline. Data for change from Baseline in FVC is presented for overall participants, and by their peripheral blood eosinophil count (missing, <300 and >=300 cells/uL), smoking history (Lifelong non-smoker, Current and previous smoker) and asthma history (missing, yes, no and unknown).

    Measured: Baseline (Day 1) and at Month 24

  37. Percentage of Participants With Change in COPD Symptoms at Months 6, 12 and 24 From Baseline

    Change in COPD symptoms were evaluated through COPD Assessment Test (CAT) and were categorized as stable symptoms, less symptoms, and more symptoms by comparing with Baseline. Percentage of participants with change in COPD symptoms at Months 6, 12 and 24 from Baseline have been presented. Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Percentage values are rounded-off.

    Measured: Baseline (Day 1), Months 6, 12 and 24

  38. Change From Baseline in European Quality of Life 5 Dimensions 5 Level (EQ-5D-5L) at Months 12 and 24

    EQ-5D-5L is self-assessment questionnaire,consisting of 5 items covering 5 dimensions (mobility,self care,usual activities,pain/discomfort and anxiety/depression). Each dimension is measured by 5-point Likert scale (1=no problems, 2=slight problems, 3=moderate problems, 4=severe problems and 5=extreme problems). Responses for 5 dimensions together formed a 5-figure description of health state (e.g.11111 indicates no problems in all 5 dimensions). Each of these 5 figure health states were converted to a single index score by applying country-specific value set formula that attaches weights to dimensions and levels. Range for EQ-5D-5L index score is -0.594 (worst health) to 1 (full health state). Baseline was considered as Day 1 of inclusion date to the study (Study Day 1). Change from Baseline was calculated as the post-dose visit value minus Baseline value.

    Measured: Baseline (Day 1), Months 12 and 24

  39. Percentage of Participants Experiencing a Clinically Important Deterioration

    Clinically important deterioration was defined as if at least one of the following conditions exists at any point of time during the observational period: decrease (>=100 milliliter [mL]) of FEV1 from Baseline (missing values are treated as no decrease); increase (>2 units) of CAT from Baseline (missing values are treated as no increase); any documented exacerbation; and all-cause mortality. Percentage of participants experiencing a clinically important deterioration during 24 months observation period have been presented. Percentage values are rounded-off.

    Measured: Up to 24 months

  40. Time to First Moderate or Severe Exacerbation

    The time to first moderate or severe exacerbation was defined as the duration between onset of first moderate or severe acute exacerbation of COPD from Day 1. Moderate exacerbations are defined as COPD exacerbations that require either systemic corticosteroids and/or antibiotics. Severe exacerbations are defined as those requiring hospitalization (including intubation and admittance to an intensive care unit) or result in death. It was evaluated by Kaplan-Maier analysis.

    Measured: Up to 24 months

  41. Time to First Hospitalization

    Time to first hospitalization is calculated as the time interval between date of study enrollment (Day 1) and the date of the first hospital admission for a relevant cause. Time to first hospitalization was analyzed using Kaplan-Meier methods.

    Measured: Up to 24 months

  42. Time to Death

    Time to death is calculated as the duration between date of study enrollment (Day 1) and the date of death of a participant. Time to death was analyzed using Kaplan-Meier methods.

    Measured: Up to 24 months

  43. Number of COPD Related Visits

    Number of COPD related visits made by participants have been presented and categorized by type of physician (general practitioners and pneumologists).

    Measured: Up to 24 months

  44. Mean Annual Rate of Exacerbations Over a 24-month Observation Period Categorized by Physician

    The annual rate of exacerbations during the observation period (per participant per year) was assessed. Annualized rate of exacerbations was calculated as Annual exacerbation rate = total number of exacerbation/total person years. Data for mean annual rate of exacerbations categorized by general practitioners and pneumologists have been presented.

    Measured: Up to 24 months

  45. Mean Annual Rate of Hospitalization Due to Severe Exacerbation Over a 24-month Observation Period Categorized by Physician

    Annualized rate of hospitalization due to severe exacerbations was calculated as Annual hospitalization rate=number of hospitalizations due to severe exacerbations/total person years. Severe exacerbations are defined as COPD exacerbations requiring hospitalization (including intubation and admittance to an intensive care unit) or result in death. Data for mean annual rate of hospitalization due to severe exacerbation categorized by general practitioners and pneumologists have been presented.

    Measured: Up to 24 months

  46. Percentage of Participants Categorized by the Site Localization of Physician and by Type of Physician

    Percentage of participants have been categorized according to the site localization (East, North, South, and West Germany) of physician and type of physician (general practitioners and pneumologists). Percentage values are rounded-off.

    Measured: Up to 24 months

  47. Mean Annual Rate of Exacerbations Over a 24-month Observation Period Categorized by Type of Physician and by Peripheral Blood Eosinophil Count, Smoking Status and Asthma History

    The annual rate of exacerbations during the observation period (per participant per year) was assessed. Annualized rate of exacerbations was calculated as Annual exacerbation rate = total number of exacerbation/total person years. Data for mean annual rate of exacerbations is presented by smoking status (Lifelong non-smoker, Current and previous smoker), peripheral blood eosinophil count (missing, <300 and >=300 cells/uL), and asthma history (missing, yes, no and unknown). Data was also categorized by the type of physician (general practitioners and pneumologists).

    Measured: Up to 24 months

  48. Number of Participants Who Had Pneumonia and Cardiovascular Events

    Number of participants who had pneumonia and cardiovascular events have been presented.

    Measured: Up to 24 months

  49. Number Needed to Treat for Benefit (NNTB) for SITT Participants Compared to Non SITT With Respect to Exacerbations, Pneumonia, and Cardiovascular Events

    NNTB is a metric used to assess the benefit of treatment. It indicates how many participants need to be treated to achieve one additional beneficial outcome with respect to exacerbations, pneumonia, and cardiovascular events. NNTB is presented as number of participants and is presented at Days 90 and 365 for participants on SIIT compared to non SITT. A participant is classified as SITT, if the treatment is SITT continuously for the first 365 days of observation.

    Measured: Days 90 and 365

  50. Number Needed to Treat for Benefit (NNTB) for MITT Participants Compared to Non MITT With Respect to Exacerbations, Pneumonia, and Cardiovascular Events

    NNTB is a metric used to assess the benefit of treatment. It indicates how many participants need to be treated to achieve one additional beneficial outcome with respect to exacerbations, pneumonia, and cardiovascular events. NNTB is presented as number of participants and is presented at Days 90 and 365 for participants on MITT compared to non MITT. A participant is classified as MITT, if the treatment is MITT continuously for the first 365 days of observation.

    Measured: Days 90 and 365

  51. Number Needed to Treat for Benefit (NNTB) With Respect to Exacerbations, Pneumonia, and Cardiovascular Events for Participants Whose Triple Therapies Interrupted by ICS and/or LAMA "Off/on" Periods Compared to Other Triple Therapies

    NNTB is a metric used to assess the benefit of treatment. It indicates how many participants need to be treated to achieve one additional beneficial outcome with respect to exacerbations, pneumonia, and cardiovascular events. NNTB is presented as number of participants and is presented at Days 90 and 365 for participants whose triple therapies were interrupted by ICS and/or LAMA "off/on" periods compared to other triple therapies.

    Measured: Days 90 and 365

  52. Number Needed to Treat for Benefit (NNTB) With Respect to Exacerbations, Pneumonia, and Cardiovascular Events for Participants With Switch of Triple Therapies Between SITT and MITT Compared to no Switch

    NNTB is a metric used to assess the benefit of treatment. It indicates how many participants need to be treated to achieve one additional beneficial outcome with respect to exacerbations, pneumonia, and cardiovascular events. NNTB is presented as number of participants and is presented at Days 90 and 365 for participants whose triple therapies were switched between SITT and MITT compared to no switch. A participants is classified as switch, if there is no de-escalation of therapy, but at least one switch between SITT and MITT within the first 365 days of observation.

    Measured: Days 90 and 365

Timeline

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

  1. First posted8 Dec 2020
  2. Study start14 Jan 2021
  3. Primary completion1 Jul 2024
  4. Study completion1 Jul 2024

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
Cohort
Time perspective
Prospective
Enrolment
1,212 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04657211
Sponsor's protocol ID
214468
Acronym
TETRIS
Status last verified
Aug 2025
First submitted
1 Dec 2020
Last updated
17 Aug 2025
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Vogelmeier CF, Claussen J, Beeh KM, Kardos P, Watz H, Westermayer B, Rohde G. A multicentre, observational prospective study to characterise the use of inhaled triple therapy for COPD: TETRIS final results after a 24-month follow-up period. Ther Adv Respir Dis. 2026 Jan-Dec;20:17534666261477018. doi: 10.1177/17534666261477018. Epub 2026 Sep 8.

    PubMed 42710849
  • Rohde G, Vogelmeier CF, Beeh KM, Kardos P, Paulsson T, Watz H, Westermayer B, Mohan T, Noorduyn SG, Claussen J. TETRIS - Prospective study to observe clinical outcomes of triple therapy in COPD patients: Up to 12 months interim analysis. Respir Med. 2026 Jan;251:108597. doi: 10.1016/j.rmed.2025.108597. Epub 2025 Dec 17.

    PubMed 41418889
  • Vogelmeier CF, Beeh KM, Kardos P, Paulsson T, Rohde G, Watz H, Compton C, Mohan T, Claussen J. Baseline patient demographics for TETRIS: a prospective, noninterventional study to characterize the use of triple therapy for COPD in Germany. Ther Adv Respir Dis. 2024 Jan-Dec;18:17534666241287621. doi: 10.1177/17534666241287621.

    PubMed 39436955

Questions about this trial

What is this clinical trial studying?

An observational study of Pulmonary Disease, Chronic Obstructive, run by GlaxoSmithKline at 1 site in Germany.

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 5 inclusion and 5 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 17 Aug 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Germany. 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?

Yes. Results are posted in the registry (first posted 17 Aug 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Percentage of Participants Who Continuously Received Triple Therapy for 6 Months (time frame: From Day 1 (Month 1) up to 6 months). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04657211, which also lists 3 linked publications.

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 17 Aug 2025.

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