Clinical trials
Terminated trials in the United Kingdom
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
2,434 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 6 |
| 2001 | 11 |
| 2002 | 7 |
| 2003 | 16 |
| 2004 | 32 |
| 2005 | 48 |
| 2006 | 66 |
| 2007 | 85 |
| 2008 | 87 |
| 2009 | 88 |
| 2010 | 89 |
| 2011 | 92 |
| 2012 | 113 |
| 2013 | 121 |
| 2014 | 128 |
| 2015 | 135 |
| 2016 | 129 |
| 2017 | 180 |
| 2018 | 175 |
| 2019 | 207 |
| 2020 | 168 |
| 2021 | 176 |
| 2022 | 122 |
| 2023 | 77 |
| 2024 | 44 |
| 2025 | 14 |
| 2026 | 3 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Terminated | 2,434 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Novartis Pharmaceuticals | 94 |
| GlaxoSmithKline | 91 |
| Pfizer | 84 |
| Hoffmann-La Roche | 68 |
| AstraZeneca | 60 |
| Gilead Sciences | 50 |
| Imperial College London | 46 |
| Bayer | 28 |
| Sanofi | 28 |
| University of Oxford | 27 |
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 | 84 |
| Neoplasms | 81 |
| Alzheimer Disease | 61 |
| Breast Neoplasms | 59 |
| Neoplasm Metastasis | 48 |
| Arthritis, Rheumatoid | 45 |
| Melanoma | 43 |
| Heart Failure | 39 |
| Pulmonary Disease, Chronic Obstructive | 37 |
| Prostatic Neoplasms | 36 |
Trials
Showing 26 to 50 of 2,434. Each trial links to its page on Pharma Observatory.
2,334 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.