Asthma, Obesity
Conditions
Brief summary
The main purpose of this Phase 2 double blind, placebo controlled crossover clinical study is to demonstrate the efficacy and safety of CXA-10 in obese adult asthmatics. Obesity induces a chronic systemic inflammatory state characterized by impaired adipokine signaling, pro-inflammatory cytokine responses, inflammatory cell activation and enhanced generation of oxidative inflammatory mediators. This impacts the lung, increasing the severity of asthma and its exacerbations. This research will evaluate how a synthetic nitro-fatty acid (CXA-10, 10-nitro-octadec-9-enoic acid) suppresses the systemic and airway inflammation that contributes to the obese asthmatic phenotype. Current data support the pleiotropic signaling actions of CXA-10 to induce adaptive signaling actions that beneficially modulate adipokine and cytokine expression and inhibit systemic and pulmonary inflammation. The investigators hypothesize that CXA-10 induced signaling responses will alleviate obesity-related airway hyperreactivity in obese adult asthmatics.
Interventions
DRUGCXA-10
6 weeks of treatment with 150 mg/day of orally administered CXA-10
DRUGMatching Placebo
6 weeks of treatment with orally administered matching placebo (to 150 mg/day of CXA-10)
Sponsors
National Institutes of Health (NIH)
National Heart, Lung, and Blood Institute (NHLBI)
University of Colorado, Denver
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No
Inclusion criteria
1. Adequate completion of informed consent process with written documentation. Male and female patients, 18 to 65 years old. Female subjects should be either post-menopausal or surgically sterile, or, if child-bearing potential (WOCP) should agree to use an acceptable method of contraception, for the duration of the study, with a negative pregnancy test prior to entering the study. 2. BMI \>/= 30 3. Diagnosis of asthma: based on previous physician diagnosis for \> 6 months, and baseline pre-bronchodilator (BD) FEV1 between 50 and 95% predicted with either a 12% or greater bronchodilator response to 4 puffs of albuterol or PC20 methacholine (16 mg) if \<12% change post BD 4. Regular treatment with inhaled corticosteroids (ICS) (up to 1000 mcg/day fluticasone/equivalent), long acting beta agonists (LABA), and/or long-acting muscarinic antagonists (LAMA), which can be combination medication for at least 3 months; on a stable dose for the 4 weeks prior to Visit 0
Exclusion criteria
1. Respiratory tract infection within the last 4 weeks 2. Oral or systemic corticosteroid burst within the last 4 weeks 3. Asthma-related hospitalization within the last 6 weeks 4. Three or more asthma exacerbations requiring treatment with systemic corticosteroids in the past year consistent with severe asthma 5. Asthma-related ER visit within the previous 4 weeks 6. Current smoking or have former smokers that quit within the previous 1 year, or 10 pack years
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Methacholine challenge dose per spirometry | Through study completion, up to 18 weeks | To determine CXA-10 efficacy, reduction of bronchial hyperresponsiveness determined by performing spirometry to see if there's a change in methacholine dose |
| Changes in pre-bronchodilator FEV1 per spirometry | Through study completion, up to 18 weeks | To determine the efficacy of CXA-10 by improving FEV1 |
Countries
United States
Contacts
Primary ContactAsthma Research
Outcome results
None listed