Clinical trials
Terminated Phase 2/3 trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
358 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 2 |
| 2001 | 5 |
| 2002 | 7 |
| 2003 | 7 |
| 2004 | 5 |
| 2005 | 16 |
| 2006 | 17 |
| 2007 | 11 |
| 2008 | 14 |
| 2009 | 16 |
| 2010 | 8 |
| 2011 | 15 |
| 2012 | 11 |
| 2013 | 20 |
| 2014 | 18 |
| 2015 | 12 |
| 2016 | 15 |
| 2017 | 11 |
| 2018 | 17 |
| 2019 | 22 |
| 2020 | 29 |
| 2021 | 32 |
| 2022 | 19 |
| 2023 | 14 |
| 2024 | 11 |
| 2025 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Terminated | 358 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Mayo Clinic | 8 |
| The University of Texas Medical Branch, Galveston | 8 |
| Florida Atlantic University | 7 |
| Pfizer | 7 |
| Gilead Sciences | 5 |
| M.D. Anderson Cancer Center | 5 |
| Boehringer Ingelheim | 4 |
| Nationwide Children's Hospital | 4 |
| Novartis Pharmaceuticals | 4 |
| University of Alabama at Birmingham | 4 |
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 |
|---|---|
| COVID-19 | 27 |
| Alzheimer Disease | 8 |
| Burns | 8 |
| Colitis, Ulcerative | 8 |
| Diabetes Mellitus | 8 |
| Stroke | 8 |
| Neoplasms | 7 |
| Breast Neoplasms | 6 |
| Coronavirus Infections | 6 |
| Crohn Disease | 6 |
Trials
Showing 1 to 25 of 358. Each trial links to its page on Pharma Observatory.
258 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.