Clinical trials
Completed trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
120,965 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 1,151 |
| 2001 | 1,392 |
| 2002 | 1,831 |
| 2003 | 2,499 |
| 2004 | 3,152 |
| 2005 | 3,712 |
| 2006 | 4,285 |
| 2007 | 4,610 |
| 2008 | 5,125 |
| 2009 | 5,308 |
| 2010 | 5,366 |
| 2011 | 5,309 |
| 2012 | 5,450 |
| 2013 | 5,572 |
| 2014 | 5,743 |
| 2015 | 5,908 |
| 2016 | 5,801 |
| 2017 | 6,578 |
| 2018 | 6,501 |
| 2019 | 6,130 |
| 2020 | 5,552 |
| 2021 | 5,945 |
| 2022 | 4,855 |
| 2023 | 3,949 |
| 2024 | 2,812 |
| 2025 | 1,505 |
| 2026 | 276 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 120,965 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| National Cancer Institute (NCI) | 2,071 |
| Mayo Clinic | 1,871 |
| National Institute of Allergy and Infectious Diseases (NIAID) | 1,665 |
| Pfizer | 1,359 |
| Massachusetts General Hospital | 1,346 |
| Duke University | 1,278 |
| M.D. Anderson Cancer Center | 1,232 |
| University of California, San Francisco | 1,181 |
| VA Office of Research and Development | 1,173 |
| Stanford University | 1,164 |
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 |
|---|---|
| Breast Neoplasms | 3,318 |
| Obesity | 3,294 |
| Neoplasms | 2,779 |
| HIV Infections | 2,393 |
| Diabetes Mellitus, Type 2 | 2,351 |
| Diabetes Mellitus | 2,147 |
| Prostatic Neoplasms | 1,764 |
| Pain | 1,762 |
| Carcinoma, Non-Small-Cell Lung | 1,524 |
| Anxiety Disorders | 1,457 |
Trials
Showing 1 to 25 of 120,965. Each trial links to its page on Pharma Observatory.
120,865 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.