A Prospective Observational Study of Biopredictors of Bronchial Thermoplasty Response in Patients With Severe Refractory Asthma (BTR Study)
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This page only displays public information reproduced from the official ClinicalTrials.gov record NCT01185275. It adds no medical advice, opinions, or eligibility judgments. The official record remains the source of truth for eligibility criteria, enrollment, and contact information.
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Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Clinical response, as defined by improvement in asthma quality of life, to bronchial thermoplasty in patients with severe refractory asthma can be predicted through the use of clinical, physiologic, biologic and imaging markers.
Study identification
- NCT ID
- NCT01185275
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 133 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years to 65 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 2010 (Type not available)
- Primary completion
- Oct 1, 2019 (Actual)
- Completion
- Oct 1, 2019 (Actual)
- Last update posted
- Nov 27, 2020
2010 – 2019
United States locations
- U.S. sites
- 8
- U.S. states
- 8
- U.S. cities
- 8
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Alabama at Birmingham | Birmingham | Alabama | — | — |
| University of Arizona | Tucson | Arizona | — | — |
| National Jewish Health | Denver | Colorado | 80206 | — |
| University of Chicago | Chicago | Illinois | 60637 | — |
| Louisiana State University Health Sciences Center in New Orleans | New Orleans | Louisiana | 70112 | — |
| Washington University School of Medicine | St Louis | Missouri | 63110 | — |
| Creighton University | Omaha | Nebraska | — | — |
| Cleveland Clinic | Cleveland | Ohio | 44195 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01185275, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Nov 27, 2020 · Synced Nov 14, 2026
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