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 1 to 25 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.