Clinical trials
Completed trials in the United States with no applicable phase
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
41,783 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 157 |
| 2001 | 194 |
| 2002 | 264 |
| 2003 | 444 |
| 2004 | 535 |
| 2005 | 670 |
| 2006 | 845 |
| 2007 | 1,029 |
| 2008 | 1,219 |
| 2009 | 1,363 |
| 2010 | 1,465 |
| 2011 | 1,508 |
| 2012 | 1,780 |
| 2013 | 1,909 |
| 2014 | 2,015 |
| 2015 | 2,272 |
| 2016 | 2,342 |
| 2017 | 2,817 |
| 2018 | 2,935 |
| 2019 | 2,837 |
| 2020 | 2,407 |
| 2021 | 2,949 |
| 2022 | 2,498 |
| 2023 | 2,130 |
| 2024 | 1,548 |
| 2025 | 823 |
| 2026 | 138 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 41,783 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| VA Office of Research and Development | 831 |
| Mayo Clinic | 726 |
| Massachusetts General Hospital | 682 |
| University of Michigan | 669 |
| Duke University | 658 |
| University of California, San Francisco | 610 |
| Stanford University | 591 |
| University of Pennsylvania | 564 |
| University of North Carolina, Chapel Hill | 533 |
| University of Pittsburgh | 506 |
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 |
|---|---|
| Obesity | 2,029 |
| Anxiety Disorders | 1,027 |
| Diabetes Mellitus | 1,004 |
| Breast Neoplasms | 922 |
| Diabetes Mellitus, Type 2 | 794 |
| Pain | 735 |
| Neoplasms | 723 |
| Hypertension | 690 |
| Substance-Related Disorders | 625 |
| Overweight | 623 |
Trials
Showing 1 to 25 of 41,783. Each trial links to its page on Pharma Observatory.
41,683 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.