Clinical trials
Terminated Phase 4 trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
2,708 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 10 |
| 2001 | 19 |
| 2002 | 23 |
| 2003 | 58 |
| 2004 | 82 |
| 2005 | 104 |
| 2006 | 135 |
| 2007 | 150 |
| 2008 | 171 |
| 2009 | 150 |
| 2010 | 145 |
| 2011 | 135 |
| 2012 | 157 |
| 2013 | 144 |
| 2014 | 129 |
| 2015 | 122 |
| 2016 | 156 |
| 2017 | 152 |
| 2018 | 141 |
| 2019 | 128 |
| 2020 | 97 |
| 2021 | 107 |
| 2022 | 87 |
| 2023 | 59 |
| 2024 | 14 |
| 2025 | 13 |
| 2026 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Terminated | 2,708 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Massachusetts General Hospital | 35 |
| Duke University | 32 |
| Novartis Pharmaceuticals | 32 |
| Pfizer | 31 |
| DePuy International | 23 |
| Sanofi | 23 |
| University of California, San Francisco | 23 |
| Hoffmann-La Roche | 22 |
| Assistance Publique - Hôpitaux de Paris | 21 |
| Columbia University | 21 |
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 |
|---|---|
| Pain | 98 |
| Diabetes Mellitus, Type 2 | 84 |
| Postoperative Pain | 65 |
| Coronary Artery Disease | 52 |
| Diabetes Mellitus | 49 |
| Heart Failure | 47 |
| Hypertension | 46 |
| HIV Infections | 42 |
| Agnosia | 38 |
| Arthritis, Rheumatoid | 38 |
Trials
Showing 26 to 50 of 2,708. Each trial links to its page on Pharma Observatory.
2,608 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.