Clinical trials
Phase 4 Asthma trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
150 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 1 |
| 2003 | 11 |
| 2004 | 8 |
| 2005 | 7 |
| 2006 | 10 |
| 2007 | 12 |
| 2008 | 5 |
| 2009 | 5 |
| 2010 | 7 |
| 2011 | 7 |
| 2012 | 5 |
| 2013 | 10 |
| 2014 | 3 |
| 2015 | 4 |
| 2016 | 7 |
| 2017 | 6 |
| 2018 | 6 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 5 |
| 2023 | 1 |
| 2024 | 8 |
| 2025 | 2 |
| 2026 | 5 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 101 |
| Terminated | 21 |
| Recruiting | 9 |
| Active, not recruiting | 8 |
| Unknown status | 6 |
| Withdrawn | 3 |
| Not yet recruiting | 1 |
| Enrolling by invitation | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| GlaxoSmithKline | 25 |
| AstraZeneca | 6 |
| Teva Branded Pharmaceutical Products R&D, Inc. | 6 |
| University of California, San Francisco | 5 |
| University of Florida | 5 |
| Novartis Pharmaceuticals | 4 |
| Sanofi | 4 |
| University of Texas Southwestern Medical Center | 4 |
| California Allergy and Asthma Medical Group, Inc. | 3 |
| Children's Hospital of Philadelphia | 3 |
Top conditions
MeSH conditions the trials were registered with, not their broader categories. A condition with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Asthma | 150 |
| Pulmonary Disease, Chronic Obstructive | 7 |
| Rhinitis, Allergic | 6 |
| Emergencies | 5 |
| Pulmonary Eosinophilia | 4 |
| Asthma, Exercise-Induced | 3 |
| Lung Diseases | 3 |
| Bronchial Spasm | 2 |
| Dermatitis, Atopic | 2 |
| Dyspnea | 2 |
Trials
Showing 1 to 25 of 150. Each trial links to its page on Pharma Observatory.
50 more trials match. See them on Pharma Observatory
Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
No changes to these trials in the last 7 days.
Go deeper on Pharma Observatory
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