Clinical trials
Withdrawn trials in the United Kingdom
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
421 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2001 | 2 |
| 2002 | 2 |
| 2003 | 3 |
| 2004 | 4 |
| 2005 | 10 |
| 2006 | 8 |
| 2007 | 8 |
| 2008 | 8 |
| 2009 | 15 |
| 2010 | 18 |
| 2011 | 17 |
| 2012 | 15 |
| 2013 | 17 |
| 2014 | 22 |
| 2015 | 18 |
| 2016 | 23 |
| 2017 | 18 |
| 2018 | 17 |
| 2019 | 34 |
| 2020 | 34 |
| 2021 | 34 |
| 2022 | 23 |
| 2023 | 16 |
| 2024 | 21 |
| 2025 | 8 |
| 2026 | 7 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Withdrawn | 421 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Imperial College London | 46 |
| Barts & The London NHS Trust | 10 |
| GlaxoSmithKline | 10 |
| University of Edinburgh | 9 |
| Manchester University NHS Foundation Trust | 8 |
| Oxford University Hospitals NHS Trust | 8 |
| Queen Mary University of London | 8 |
| Hull University Teaching Hospitals NHS Trust | 7 |
| Liverpool Heart and Chest Hospital NHS Foundation Trust | 6 |
| University of Dundee | 6 |
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 |
|---|---|
| Pulmonary Disease, Chronic Obstructive | 17 |
| Asthma | 10 |
| Diabetes Mellitus | 9 |
| Atrial Fibrillation | 8 |
| COVID-19 | 8 |
| Coronary Artery Disease | 8 |
| Diabetes Mellitus, Type 2 | 7 |
| Neoplasms | 7 |
| Arthritis | 6 |
| Breast Neoplasms | 6 |
Trials
Showing 26 to 50 of 421. Each trial links to its page on Pharma Observatory.
321 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.