Effect of a LAMA and a uLABA on the Methacholine Dose-response Curve
The Effect of Glycopyrronium and Indacaterol, as Monotherapy and in Combination, on the Methacholine Dose-response Curve
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Detailed Description
This will be a randomized, double-blind, three-way crossover study testing glycopyrronium (Seebri®) vs. indacaterol (Onbrez®) vs. glycopyrronium+indacaterol. The MCT method used will be the two-minute tidal breathing dosing protocol. The investigators plan to enroll thirty participants, fifteen asthmatics and fifteen non-asthmatics participants.
- Asthmatic Participants Procedure: Each participant will undergo a total of twelve MCh challenges. Each MCh challenge will be stopped when the response to MCh reaches a plateau, when the participant's FEV1 drops 40% from baseline, when the highest concentration of MCh (128mg/mL) has been administered, or if the participant wishes to stop (e.g. due to discomfort). For the purpose of this study, a plateau will be defined as the last 3 consecutive data points falling within 5%. The first day of testing will take approx. 3hrs. and will entail participants undergoing a MCh challenge to determine their baseline MCh PC20. They will then self-administer the contents of two Breezhaler inhalers. If taking one of the monotherapies, one inhaler will contain active treatment (50mcg glycopyrronium or 5mcg indacaterol) and the other inhaler will contain a placebo. For the combination treatment arm, both inhalers will contain active drug (one 50mcg glycopyrronium and one 75mcg indacaterol). The identity of the treatment administered will be unknown to the participants and to the study staff. Participants will then undergo MCT post-treatment at 1 hr., 24 hrs., and 48 hrs. Testing at 24 and 48 hrs. will take approximately 1-1.5 hrs. Therefore, participants must attend the lab at roughly the same time of day for three consecutive days for each treatment arm. Following a minimum 10-day washout between treatment administrations, the same procedure will be repeated with the second study treatment. Following a second 10-day washout, the procedure will be repeated with the third study treatment.
- Non-Asthmatic Participants Procedure: Each non-asthmatic participant will undergo a single MCh challenge, which should take approx. 1-1.5 hrs. This will allow for the generation of a "normal" MCh DRC curve to compare with the asthmatic data. The MCh challenge will be stopped when the response to MCh reaches a plateau, when the participant's FEV1 drops 40% from baseline, when the highest concentration of MCh (128mg/mL) has been administered, or if the participant wishes to stop.
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Phase 4
Contacts and Locations
Study Locations
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-
Saskatchewan
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Saskatoon, Saskatchewan, Canada, S7N 0W8
- Asthma Research Lab, University of Saskatchewan
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-
Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- men and women aged 18 or older
- stable mild-to-moderate asthma
- baseline methacholine PC20 less than or equal to 8mg/mL and FEV1 greater than or equal to 65% of predicted (asthmatic participants)
- baseline methacholine PC20 greater than 16mg/mL (healthy participants)
Exclusion Criteria:
- use of long-acting bronchodilators or long-acting muscarinic antagonists within 30 days of Visit 1
- pregnant or lactating
- cardiovascular, prostate, kidney or urinary retention problems
- respiratory illness within 4 weeks of Visit 1
- allergen-induced asthma exacerbating within 4 weeks of Visit 1
- hypokalemia
- diabetes
- glaucoma
- smokers and exsmokers with greater than 10 pack years
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: CROSSOVER
- Masking: TRIPLE
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
Experimental: LAMA Treatment
Inhalation of 50mcg glycopyrronium from Breezhaler device 1 hour prior to methacholine challenge
|
long-acting muscarinic antagonist
Other Names:
|
|
Experimental: uLABA Treatment
Inhalation of 75mcg indacaterol from Breezhaler device 1 hour prior to methacholine challenge
|
ultra long-acting beta agonist
Other Names:
|
|
Experimental: Combo Treatment
Inhalation of 50mcg glycopyrronium from one Breezhaler device, and 75mcg indacaterol from a second Breezhaler device, all one hour prior to methacholine challenge
|
long-acting muscarinic antagonist
Other Names:
ultra long-acting beta agonist
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Change from baseline methacholine bronchoprotection at 1 hour
Time Frame: baseline versus 1 hour post-treatment
|
assessed by dose shift of geometric mean methacholine PC20 data
|
baseline versus 1 hour post-treatment
|
Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Change from baseline methacholine bronchoprotection at 24 hours
Time Frame: baseline versus 24 hours post-treatment
|
assessed by dose shift of geometric mean methacholine PC20 data
|
baseline versus 24 hours post-treatment
|
|
Change from baseline methacholine bronchoprotection at 48 hours
Time Frame: baseline versus 48 hours post-treatment
|
assessed by dose shift of geometric mean methacholine PC20 data
|
baseline versus 48 hours post-treatment
|
Collaborators and Investigators
Sponsor
Sponsor
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Estimate)
First Posted
Study Record Updates
Last Update Posted (Actual)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- MCh-DRC-1
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
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