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 1 to 25 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.