Clinical trials
Enrolling by invitation trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
2,007 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2001 | 1 |
| 2002 | 4 |
| 2003 | 3 |
| 2004 | 3 |
| 2005 | 2 |
| 2006 | 3 |
| 2007 | 4 |
| 2008 | 8 |
| 2009 | 10 |
| 2010 | 6 |
| 2011 | 8 |
| 2012 | 10 |
| 2013 | 12 |
| 2014 | 14 |
| 2015 | 27 |
| 2016 | 20 |
| 2017 | 28 |
| 2018 | 52 |
| 2019 | 43 |
| 2020 | 67 |
| 2021 | 96 |
| 2022 | 138 |
| 2023 | 198 |
| 2024 | 344 |
| 2025 | 468 |
| 2026 | 424 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Enrolling by invitation | 2,007 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Mayo Clinic | 113 |
| Stanford University | 41 |
| University of California, San Francisco | 38 |
| Vanderbilt University Medical Center | 35 |
| Massachusetts General Hospital | 31 |
| University of Pennsylvania | 30 |
| Johns Hopkins University | 25 |
| Indiana University | 24 |
| Northwestern University | 24 |
| Duke University | 22 |
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 |
|---|---|
| Neoplasms | 51 |
| Alzheimer Disease | 41 |
| Parkinson Disease | 37 |
| Heart Failure | 36 |
| Obesity | 36 |
| Diabetes Mellitus, Type 2 | 35 |
| Anxiety Disorders | 34 |
| Cognitive Dysfunction | 34 |
| Diabetes Mellitus | 33 |
| Epilepsy | 31 |
Trials
Showing 1 to 25 of 2,007. Each trial links to its page on Pharma Observatory.
1,907 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.