Clinical trials
Observational Asthma trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
321 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 4 |
| 2001 | 2 |
| 2002 | 2 |
| 2003 | 8 |
| 2004 | 11 |
| 2005 | 17 |
| 2006 | 12 |
| 2007 | 24 |
| 2008 | 15 |
| 2009 | 12 |
| 2010 | 14 |
| 2011 | 14 |
| 2012 | 19 |
| 2013 | 12 |
| 2014 | 11 |
| 2015 | 11 |
| 2016 | 12 |
| 2017 | 16 |
| 2018 | 10 |
| 2019 | 8 |
| 2020 | 18 |
| 2021 | 21 |
| 2022 | 7 |
| 2023 | 11 |
| 2024 | 3 |
| 2025 | 6 |
| 2026 | 5 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 232 |
| Recruiting | 25 |
| Terminated | 22 |
| Unknown status | 15 |
| Withdrawn | 14 |
| Active, not recruiting | 8 |
| Enrolling by invitation | 3 |
| Suspended | 1 |
| Not yet recruiting | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| National Institute of Allergy and Infectious Diseases (NIAID) | 19 |
| National Institute of Environmental Health Sciences (NIEHS) | 19 |
| University of California, San Francisco | 18 |
| University of Wisconsin, Madison | 12 |
| Brigham and Women's Hospital | 11 |
| National Heart, Lung, and Blood Institute (NHLBI) | 10 |
| National Jewish Health | 8 |
| University of Rochester | 7 |
| AstraZeneca | 6 |
| Boston Children's Hospital | 6 |
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 | 321 |
| Pulmonary Disease, Chronic Obstructive | 34 |
| Hypersensitivity | 32 |
| Obesity | 15 |
| Diabetes Mellitus | 14 |
| Heart Failure | 14 |
| Lung Diseases | 14 |
| Hypertension | 11 |
| Respiratory Sounds | 11 |
| Cystic Fibrosis | 9 |
Trials
Showing 1 to 25 of 321. Each trial links to its page on Pharma Observatory.
221 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.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.