This is a randomized placebo-controlled trial of semaglutide, an FDA-approved therapy for the treatment of type 2 diabetes mellitus and obesity, in adults with symptomatic asthma despite the use of inhaled steroids and with excess body weight. This study will test the central hypothesis that semaglutide will improve asthma control and reduce airway inflammation due to direct effects on the respiratory tract in adult asthma associated with obesity.
This is a proof-of-principal randomized, double-blind, placebo-controlled, single-site clinical trial of semaglutide in adult (age 18 or older, n=100), obesity-related (BMI≥30), symptomatic asthma without type II diabetes. This study will monitor clinical asthma symptom and quality of life questionnaires and airway function to determine the effect of semaglutide on asthma control. Markers of respiratory tract and adipose tissue inflammation will be monitored to determine the effect of semaglutide on airway inflammation. Study participants will be monitored for 4 weeks before assignment to treatment with the study drug for 24 weeks followed by a 2 week final monitoring period.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
100
Once weekly subcutaneous injection
Once weekly subcutaneous injection
Vanderbilt University Medical Center
Nashville, Tennessee, United States
RECRUITINGThe efficacy of semaglutide on asthma control questionnaire-7 score in subjects with symptoms, persistent asthma and obesity.
The primary clinical outcome is the difference between the treatment and placebo groups in change from baseline in asthma control questionnaire (ACQ)-7 score to week 12. The ACQ-7 scale ranges from 0-6 with lower scores indicating better asthma control.
Time frame: Baseline to week 12
The impact of semaglutide once weekly on serum periostin in subjects with symptomatic, persistent asthma and obesity.
The primary mechanistic outcome is the difference between the treatment and placebo groups in change from baseline in serum periostin at week 4.
Time frame: Baseline to week 4
The impact of semaglutide on weight loss over time.
The change from baseline in weight to week 24.
Time frame: Baseline to week 24
The efficacy of semaglutide once weekly on asthma control questionnaire-6 score in subjects with symptomatic, persistent asthma and obesity
The change from baseline in ACQ-6 score to week 12. The ACQ-6 scale ranges from 0-6 with lower scores indicating better asthma control.
Time frame: Baseline to week 12
The maximal dose of semaglutide tolerated in persistent asthma with obesity.
The maximum tolerated dose of the investigational product at week 24.
Time frame: Baseline to week 24
Incidence of treatment-emergent adverse events from semaglutide in persistent asthma with obesity.
The treatment-emergent adverse events from first dose to the completion of follow up at week 26.
Time frame: Baseline to week 26
The change in exhaled nitric oxide from semaglutide to week 12.
The change from baseline in exhaled nitric oxide at weeks 4 and 12.
Time frame: Baseline to week 4 and week 12
The change in serum periostin from semaglutide to week 12.
The change from baseline in serum periostin at week 12.
Time frame: Baseline to week 4 and week 12
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