Plain-English translation of NCT01225913 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
Read our Asthma research guide →Phase 4 — The treatment has already been approved. Researchers are tracking how it works in a large number of people over time.
Researchers want to understand why people with asthma have trouble breathing, especially during flare-ups. This study will carefully track lung function and take detailed images of your lungs using CT scans and a camera-like tool called a bronchoscope. By comparing how your lungs work at different times, the research team hopes to discover what physically changes in asthma and why some people have more airflow problems than others.
Even though doctors know asthma affects the airways, they don't fully understand all the reasons why some people with asthma struggle to breathe, especially during attacks. This research aims to fill that gap by studying the actual structure and function of asthmatic lungs.
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You'll visit the research center for breathing tests and lung imaging studies. The team will measure how well your lungs work using standard tests and advanced CT scans. They may also use a small camera (bronchoscope) to gently look inside your airways. If you experience an asthma flare-up naturally, the researchers will study your lungs again during and after treatment to see what changes. This is an observational study, meaning the researchers are watching and measuring rather than giving you new drugs to test.
AI-generated summary from trial data · Jun 11, 2026 · Not medical advice
United States
Phase
Post-approval monitoring
Sponsor
Gelb, Arthur F., M.D.
Enrollment target
~50 participants
Started
October 2007
Primary completion
June 2027
Age range
10 Years – 80 Years
Last updated on clinicaltrials.gov in October 2023.
Reach out to the team running this trial. Response times vary — some teams are faster than others.
Central contact
Arthur F Gelb, MD
Arthur F Gelb Medical Corporation
Tell us you're interested and we'll help connect you with the research team. We'll walk you through what to expect first — no email needed to get started.