Dose-Response of Salmeterol in Children
Dose-response of Salmeterol Delivered by Advair Diskus in Children: Bioassay by Methacholine Challenge Using Oscillometry as the Endpoint
1 other identifier
interventional
10
1 country
1
Brief Summary
To examine whether a breathing test (methacholine challenge using impulse oscillometry) can be used to tell the difference between two different doses of an inhaled drug, salmeterol, delivered by Advair in children with asthma
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for phase_4 asthma
Started Aug 2013
Shorter than P25 for phase_4 asthma
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
June 28, 2013
CompletedFirst Posted
Study publicly available on registry
July 24, 2013
CompletedStudy Start
First participant enrolled
August 1, 2013
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 1, 2014
CompletedStudy Completion
Last participant's last visit for all outcomes
July 1, 2014
CompletedResults Posted
Study results publicly available
October 7, 2014
CompletedOctober 7, 2014
October 1, 2014
9 months
June 28, 2013
September 17, 2014
October 6, 2014
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Total Airway Resistance Increase
concentration of methacholine required to increase total airway resistance by 40% (PC40R5)
1 to 7 days
Study Arms (2)
Advair Diskus100/50 µg and Advair Diskus 100/50 µg
ACTIVE COMPARATORThe Advair Diskus 100/50 µg and Advair Diskus 100/50 µg will be administered in a blinded fashion. One hour after receiving the dose of Advair a methacholine challenge will be performed to determine the PC40R5. After the PC40R5 has been reached or a negative result after the highest methacholine concentration, 64 mg/mL, subjects will inhale albuterol through a valved holding chamber to reverse bronchoconstriction and their lung function will be monitored until it has returned to within 20% of that day's baseline R5.
Advair Diskus 100/50 µg and Flovent Diskus 100 µg
ACTIVE COMPARATORThe Advair Diskus 100/50 µg and Flovent Diskus 100 µg will be administered in a blinded fashion. One hour after receiving the dose of Advair and Flovent a methacholine challenge will be performed to determine the PC40R5. After the PC40R5 has been reached or a negative result after the highest methacholine concentration, 64 mg/mL, subjects will inhale albuterol through a valved holding chamber to reverse bronchoconstriction and their lung function will be monitored until it has returned to within 20% of that day's baseline R5.
Interventions
Advair Diskus 100/50 µg
Flovent Diskus 100 µg
Methacholine Chloride in quadrupling concentrations from 0.25 to 64 mg/mL will be given based upon subject's baseline response.
Albuterol will be administered at the end of each methacholine challenge.
Eligibility Criteria
You may qualify if:
- parent/legal guardian and subject must be able to speak and understand English and patient must be willing and able to give assent to take part in the study
- diagnosed with asthma for at least 6 months
- able to demonstrate inhalation technique with study device
- if taking inhaled corticosteroids, dose must be stable for 2 weeks
- no significant concomitant medical conditions or abnormal physical findings on screening except for those consistent with asthma and allergic rhinitis
- airway responsiveness to methacholine with a baseline provocational dose causing an increase of at least 40% in R5 (PC40R5) at no more than 8 mg/mL
You may not qualify if:
- female who has started menstruating
- past or present history of any allergic reaction to any of the medications or formulations administered in this study
- prior treatment with systemic corticosteroids in last 30 days or more than 4 courses in previous 12 months
- use of short-acting beta-agonist more than two times per week in the previous month
- use of long-acting beta-agonist in the 3 weeks before the first methacholine challenge or during the study
- change in dosage of inhaled corticosteroids in previous 30 days, nasal steroids in previous 15 days and montelukast in last 7 days
- history of life-threatening asthma, including loss of consciousness, intubation and/or admission to ICU
- hospitalization for acute asthma within past year
- inability to withhold the following medications before methacholine challenges:
- short-acting beta-agonists at least 6 hours
- regular long-acting beta-agonists at least 3 weeks
- inhaled corticosteroid at least 2 hours
- montelukast at least 24 hours
- aspirin and non-steroid anti-inflammatory drugs at least 48 hours
- caffeine at least 4 hours
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
University of Florida Asthma Research Lab
Gainesville, Florida, 32610-0486, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Results Point of Contact
- Title
- Leslie Hendeles, PharmD
- Organization
- University of Florida
Study Officials
- PRINCIPAL INVESTIGATOR
Leslie Hendeles, PharmD
University of Florida
Publication Agreements
- PI is Sponsor Employee
- No
- Restrictive Agreement
- No
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Intervention Model
- CROSSOVER
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
June 28, 2013
First Posted
July 24, 2013
Study Start
August 1, 2013
Primary Completion
May 1, 2014
Study Completion
July 1, 2014
Last Updated
October 7, 2014
Results First Posted
October 7, 2014
Record last verified: 2014-10