Clinical trials
Terminated Phase 3 trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
1,927 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 14 |
| 2001 | 16 |
| 2002 | 21 |
| 2003 | 35 |
| 2004 | 47 |
| 2005 | 84 |
| 2006 | 100 |
| 2007 | 104 |
| 2008 | 107 |
| 2009 | 86 |
| 2010 | 108 |
| 2011 | 92 |
| 2012 | 75 |
| 2013 | 84 |
| 2014 | 79 |
| 2015 | 78 |
| 2016 | 75 |
| 2017 | 91 |
| 2018 | 134 |
| 2019 | 95 |
| 2020 | 110 |
| 2021 | 122 |
| 2022 | 77 |
| 2023 | 32 |
| 2024 | 25 |
| 2025 | 3 |
| 2026 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Terminated | 1,927 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Pfizer | 76 |
| Novartis Pharmaceuticals | 52 |
| Sanofi | 43 |
| Hoffmann-La Roche | 40 |
| Gilead Sciences | 26 |
| GlaxoSmithKline | 26 |
| AstraZeneca | 25 |
| Eli Lilly and Company | 23 |
| Biogen | 21 |
| M.D. Anderson Cancer Center | 20 |
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 |
|---|---|
| Carcinoma, Non-Small-Cell Lung | 53 |
| Pain | 48 |
| Diabetes Mellitus, Type 2 | 47 |
| Alzheimer Disease | 44 |
| Neoplasms | 44 |
| Breast Neoplasms | 42 |
| COVID-19 | 37 |
| Diabetes Mellitus | 34 |
| Prostatic Neoplasms | 30 |
| Lung Neoplasms | 27 |
Trials
Showing 1 to 25 of 1,927. Each trial links to its page on Pharma Observatory.
1,827 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.
No changes to these trials in the last 7 days.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.