GSNO Challenge for Severe Asthma
Trial Summary
What is the purpose of this trial?
Asthma is caused by or worsened by different things in different people. It is because of these differences that not all people with asthma respond the same to all treatments and medicines. If the investigators can better identify the changes in the airways or breathing pipes in patients with asthma, the investigators may be able to help patients make better choices about the medicines or treatments that are most likely to work best for each patient. This research study is about one specific factor that is known to affect asthma in some patients. It involves an increase in the activity of an enzyme that is in people's airways. An enzyme is something that helps a chemical reaction to occur. The enzyme the investigators are studying in this research study is called GSNOR (S-nitrosoglutathione reductase) , and when the activity of this enzyme is increased, the result is that there is less GSNO (S-nitrosoglutathione) . GSNO is a chemical that protects people's airways. The initials stand for S-nitrosoglutathione, (pronounced s-nahy-troh-soh-gloo-tuh-thahy-ohn), and it is naturally produced by the body. It has an important role in regulating respiratory function (breathing) and preventing inflammation (swelling) in the respiratory tract (throat, airways, and lungs). The amount of GSNO found in the body is controlled by the enzyme GSNOR (S-nitrosoglutathione reductase). GSNOR breaks down GSNO. Too much GSNOR leads to low levels of GSNO, and that can cause inflammation (swelling) and loss of airway function in some asthma patients. The only way to measure GSNOR levels currently is with a bronchoscopy procedure where a scope is inserted into the patient's airways, often under sedation. This research study is being done to test the accuracy of another type of test that can be done in the doctor's office, rather than in a procedure area. This non-invasive diagnostic test, called a GSNO Challenge test, may be able to identify which asthma patients have increased activity of the airway enzyme GSNOR. The investigators are also studying the phenotypes (observable traits) in asthma patients with increased levels of GSNOR. If this research study is successful, in the future (after this research study is done). The investigators may be able to offer a cost-effective and non-invasive way to identify patients who have higher GSNOR activity levels and offer personalized treatments. The GSNO Challenge test includes giving an investigational drug to breathe in (inhale). The investigational drug is GSNO. "Investigational" means the drug is not approved by any regulatory agencies including the Food and Drug Administration (FDA), and is still being tested for safety and effectiveness. The research is registered with the FDA, but again the GSNO treatment in this study (administered during the GSNO challenge testing) is not an approved treatment or diagnostic test for asthma.
Research Team
Kristie Ross, MD
Principal Investigator
University Hospitals Cleveland Medical Center
Eligibility Criteria
This trial is for adults aged 18-50 with a physician's diagnosis of asthma for at least one year, non-smokers, and have certain lung function test results. Healthy volunteers without chronic lung diseases or severe allergies can also participate. People with recent corticosteroid use, infections, high BMI, other chronic diseases, smoking history or those who are pregnant/breastfeeding cannot join.Inclusion Criteria
Exclusion Criteria
Treatment Details
Interventions
- GSNO (Other)
- GSNO Challenge Test (Other)
Find a Clinic Near You
Who Is Running the Clinical Trial?
James Reynolds
Lead Sponsor
University Hospitals Cleveland Medical Center
Collaborator
Dr. Brett Glotzbecker
University Hospitals Cleveland Medical Center
Chief Medical Officer since 2023
MD
Dr. Cliff Megerian
University Hospitals Cleveland Medical Center
Chief Executive Officer
MD, MBA
Case Western Reserve University
Collaborator
Eric W. Kaler
Case Western Reserve University
Chief Executive Officer since 2021
PhD in Chemical Engineering from the University of Minnesota
Stanton L. Gerson
Case Western Reserve University
Chief Medical Officer since 2020
MD from Harvard Medical School
National Heart, Lung, and Blood Institute (NHLBI)
Collaborator
Dr. Gary H. Gibbons
National Heart, Lung, and Blood Institute (NHLBI)
Chief Executive Officer since 2012
MD from Harvard Medical School
Dr. James P. Kiley
National Heart, Lung, and Blood Institute (NHLBI)
Chief Medical Officer since 2011
MD from University of California, San Francisco