CClinicalTrials.gg
CompletedNCT03964220Updated Nov 3, 2020Results posted

Impact of Tiotropium Add-on Therapy in Patients With Asthma

An observational study in Asthma, sponsored by Boehringer Ingelheim. Completed at 1 site in United States. Open to participants aged 12 Years and older. Per ClinicalTrials.gov, last updated 2020-11-03.

Sponsored by Boehringer Ingelheim · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
7,857
Ages
12 Years and older
Sex
All
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Study summary

To evaluate the effectiveness of add on therapy with Tiotropium Respimat® compared to increasing the dose of ICS in patients with a diagnosis of Asthma and on ICS/LABA therapy

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Conditions studied

  • Asthma

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03

In context

Asthma

3,921 studies on the registry are indexed under Asthma; 507 are open to participants now.

This study's enrollment of 7,857 is above the median of 150 across 970 observational studies indexed under Asthma.

Browse Asthma studies →

Lead sponsor

Boehringer Ingelheim is the lead sponsor of 2,245 studies on the registry; 58 are open to participants now.

Of its 162 completed or terminated interventional studies of FDA-regulated products, 116 (72%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
12 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Asthmatics 6 years and above on ICS/LABA at baselineIMS Pharmetrics (IMS or Database I); EMRClaims+ (Database II)

Inclusion criteria

  • Patients with least one asthma diagnosis in the inpatient setting or at least two separate instances of asthma diagnosis (separated by at least 30 days) recorded in the outpatient or emergency room setting will be included.
  • Patients will be required to be already on Inhaled Corticosteroid/Long-acting beta-agonist (ICS/LABA).
  • Patients will be required to have available records 12 months prior to the index date.

Exclusion criteria

Exclusion Criteria:

  • Patients below the age of 6 years on the Inhaled Corticosteroid/Long-acting beta-agonist initiation (ICS/LABAi) date will be excluded.
  • Patients with a diagnosis of COPD at any time during the study period will be excluded.
  • Those who are on biologics at baseline will be removed.
  • After the PSM process, unmatched patients will be excluded.
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Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
7,857 participants (actual)
Patient registry
No

Groups and cohorts

  • Patients with Asthma

    Drug: Tiotropium Respimat® · Drug: Inhaled Corticosteroid/Long-acting beta-agonist

Interventions

  • DrugTiotropium Respimat®

    Tiotropium Respimat® 1.25 mcg (on top of baseline Inhaled Corticosteroid/Long-acting beta-agonist )

  • DrugInhaled Corticosteroid/Long-acting beta-agonist

    baseline low dose to medium/high dose, baseline medium dose ICS/LABA to high dose ICS/LABA, additional prescription/refill of high-dose-ICS/LABA following the first prescription of baseline high dose ICS/LABA

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What researchers measure

Primary outcomes

  1. Time to First Exacerbation

    Exacerbations will be defined as either a hospitalization with a primary diagnosis of asthma, an emergency room (ER) visit with a primary diagnosis of asthma, an asthma exacerbation diagnosis recorded.

    Time frame: From baseline until end of follow-up, up to 3 years

Secondary outcomes

  1. Rate of Exacerbation at 6 Months and 1 Year of Follow-up

    Exacerbation rate per 100 person-years. Follow-up period was from index date (date of the first prescription for Tiotropium Respimat® 1.25 mcg in Tio group; date of the first prescription from low to medium/high does or medium to high does or additional high-does of Inhaled Corticosteroid (ICS)/long-acting beta-agonists (LABA) for NonTio group).

    Time frame: At 6 month and 1 year of follow-up

  2. Health Care Resource Utilization (HCRU) During Follow-up

    Follow-up period was from index date (date of the first prescription for Tiotropium Respimat® 1.25 mcg in Tio group; date of the first prescription from low to medium/high does or medium to high does or additional high-does of Inhaled Corticosteroid (ICS)/long-acting beta-agonists (LABA) for NonTio group) and up to 3 years of study period.

    Time frame: During follow-up period, From baseline until end of follow-up, up to 3 years

  3. Change in Lung Function (Forced Expiratory Volume in 1 Second (FEV1) Score) at Baseline and Follow up Period

    Follow-up period was from index date (date of the first prescription for Tiotropium Respimat® 1.25 mcg in Tio group; date of the first prescription from low to medium/high does or medium to high does or additional high-does of Inhaled Corticosteroid (ICS)/long-acting beta-agonists (LABA) for NonTio group) and up to 3 years of study period. FEV1 score range from 0 to 100. Higher FEV1 score suggests normal lung function, while lower for dangerous. Only the descriptive statistics of FEV1 score were reported other than change of FEV1 score from baseline due to lack of enough data points.

    Time frame: From baseline until end of follow-up, up to 3 years

  4. Change in Asthma Control Test (ACT) Score at Baseline and in the Follow up Period

    Follow-up period was from index date (date of the first prescription for Tiotropium Respimat® 1.25 mcg in Tio group; date of the first prescription from low to medium/high does or medium to high does or additional high-does of Inhaled Corticosteroid (ICS)/long-acting beta-agonists (LABA) for NonTio group) and up to 3 years of study period. ACT score is based on a range of 5 to 25. Higher score indicates better asthma control. A score of 19 or less may be a sign that asthma symptoms not under control. Only the descriptive statistics of ACT score were reported other than change of ACT score from baseline due to lack of enough data points.

    Time frame: From baseline until end of follow-up, up to 3 years

07

Results

Posted Oct 12, 2020

Participant flow

A retrospective cohort data analysis evaluated the effectiveness of add on therapy with Tiotropium Respimat® 1.25 microgram comparing to increasing the dose of Inhaled Corticosteroid (ICS) in patients with a diagnosis of Asthma and on ICS/Long-acting beta-agonist (LABA) therapy.

Participant flow — Overall Study
MilestoneTiotropium Respimat® (Tio Group)Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group)
Started26195238
Completed26195238
Not completed00

Outcome measures

PrimaryTime to First Exacerbation

Exacerbations will be defined as either a hospitalization with a primary diagnosis of asthma, an emergency room (ER) visit with a primary diagnosis of asthma, an asthma exacerbation diagnosis recorded.

Time frame:
From baseline until end of follow-up, up to 3 years
Reported as:
Mean · Days
Time to First Exacerbation
DaysTiotropium Respimat® (Tio Group)Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group)
Time to First Exacerbation340.656 ± 428.061123.151 ± 152.600
Statistical analysis
  • Tiotropium Respimat® (Tio Group) vs Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group) · Regression, Cox · p = 0.044 · Hazard ratio (hr): 0.65 · 95% CI 0.427 to 0.990
SecondaryRate of Exacerbation at 6 Months and 1 Year of Follow-up

Exacerbation rate per 100 person-years. Follow-up period was from index date (date of the first prescription for Tiotropium Respimat® 1.25 mcg in Tio group; date of the first prescription from low to medium/high does or medium to high does or additional high-does of Inhaled Corticosteroid (ICS)/long-acting beta-agonists (LABA) for NonTio group).

Time frame:
At 6 month and 1 year of follow-up
Reported as:
Number · Events per 100 person-years
Rate of Exacerbation at 6 Months and 1 Year of Follow-up
Events per 100 person-yearsTiotropium Respimat® (Tio Group)Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group)
At 6 months of follow-up41.40116.07
At 1 year of follow-up15.6557.24
Statistical analysis
  • Tiotropium Respimat® (Tio Group) vs Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group) · Negative binomial regression · p = < 0.0001
  • Tiotropium Respimat® (Tio Group) vs Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group) · Negative binomial regression · p = < 0.0001
SecondaryHealth Care Resource Utilization (HCRU) During Follow-up

Follow-up period was from index date (date of the first prescription for Tiotropium Respimat® 1.25 mcg in Tio group; date of the first prescription from low to medium/high does or medium to high does or additional high-does of Inhaled Corticosteroid (ICS)/long-acting beta-agonists (LABA) for NonTio group) and up to 3 years of study period.

Time frame:
During follow-up period, From baseline until end of follow-up, up to 3 years
Reported as:
Number · Events per 100 person-years
Health Care Resource Utilization (HCRU) During Follow-up
Events per 100 person-yearsTiotropium Respimat® (Tio Group)Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group)
Hospitalization (all cause)23.9746.51
Hospitalization (asthma related)4.8920.27
Emergency room (ER) visit (all cause)45.0084.67
ER visit (asthma related)12.2347.70
Outpatient (OP) visit (all cause)206.92232.55
OP visit (asthma related)133.06158.61
SecondaryChange in Lung Function (Forced Expiratory Volume in 1 Second (FEV1) Score) at Baseline and Follow up Period

Follow-up period was from index date (date of the first prescription for Tiotropium Respimat® 1.25 mcg in Tio group; date of the first prescription from low to medium/high does or medium to high does or additional high-does of Inhaled Corticosteroid (ICS)/long-acting beta-agonists (LABA) for NonTio group) and up to 3 years of study period. FEV1 score range from 0 to 100. Higher FEV1 score suggests normal lung function, while lower for dangerous. Only the descriptive statistics of FEV1 score were reported other than change of FEV1 score from baseline due to lack of enough data points.

Time frame:
From baseline until end of follow-up, up to 3 years
Reported as:
Mean · Score on a scale
Change in Lung Function (Forced Expiratory Volume in 1 Second (FEV1) Score) at Baseline and Follow up Period
Score on a scaleTiotropium Respimat® (Tio Group)Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group)
Change in Lung Function (Forced Expiratory Volume in 1 Second (FEV1) Score) at Baseline and Follow up Period77.77 ± 20.1685.69 ± 20.77
SecondaryChange in Asthma Control Test (ACT) Score at Baseline and in the Follow up Period

Follow-up period was from index date (date of the first prescription for Tiotropium Respimat® 1.25 mcg in Tio group; date of the first prescription from low to medium/high does or medium to high does or additional high-does of Inhaled Corticosteroid (ICS)/long-acting beta-agonists (LABA) for NonTio group) and up to 3 years of study period. ACT score is based on a range of 5 to 25. Higher score indicates better asthma control. A score of 19 or less may be a sign that asthma symptoms not under control. Only the descriptive statistics of ACT score were reported other than change of ACT score from baseline due to lack of enough data points.

Time frame:
From baseline until end of follow-up, up to 3 years
Reported as:
Mean · Score on a scale
Change in Asthma Control Test (ACT) Score at Baseline and in the Follow up Period
Score on a scaleTiotropium Respimat® (Tio Group)Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group)
Change in Asthma Control Test (ACT) Score at Baseline and in the Follow up Period15.65 ± 7.016.16 ± 5.3

Adverse events

Collected over Adverse event information was not applicable for this study. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Tiotropium Respimat® (Tio Group)———
Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group)———

Baseline characteristics

This study included asthma patients from two retrospective data sources (IMS Pharmetrics and EMRClaims+) after propensity score matching based on ICS/LABA dose on initiation date, demographics, Charlson Comorbidity index (CCI) score, specific comorbidities, medications and asthma control status.

Age, Continuous
Age, Continuous(Years)Tiotropium Respimat® (Tio Group)Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group)Total
Mean45.12 ± 15.3844.77 ± 15.4344.89 ± 15.41
Sex: Female, Male
Sex: Female, Male(Participants)Tiotropium Respimat® (Tio Group)Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group)Total
Female180235765378
Male81716622479
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)Tiotropium Respimat® (Tio Group)Inhaled Corticosteroid/Long-acting Beta-agonist (NonTio Group)Total
Count of participants——0
08

Study locations

1 site
  • eMax Health
    White Plains, New York 10601, United States
09

References and documents

Related links

Study documents

  • Protocol and statistical analysis plan · Feb 18, 2019

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: Yes — After the study is completed and the primary manuscript is accepted for publishing, researchers can use this following link https:// trials.boehringer-ingelheim.com/trial_results/ clinical_submission_documents.html to request access to the clinical study documents regarding this study, and upon a signed "Document Sharing Agreement". Also, Researchers can use the following link http://trials.boehringeringelheim. com/ to find information in order to request access to the clinical study data, for this and other listed studies, after the submission of a research proposal and according to the terms outlined in the website. The data shared are the raw clinical study data sets.

Supporting information: Study protocol, Sap, Csr

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 3, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03964220
Lead sponsor
Boehringer Ingelheim
Responsible party
Sponsor
First posted
May 28, 2019
Start date
Mar 15, 2019
Primary completion
Sep 20, 2019
Completion
Sep 20, 2019
Results posted
Oct 12, 2020
Last update
Nov 3, 2020

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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