Clinical trials
Observational trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
141,827 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 459 |
| 2001 | 502 |
| 2002 | 633 |
| 2003 | 896 |
| 2004 | 1,159 |
| 2005 | 1,614 |
| 2006 | 2,028 |
| 2007 | 2,545 |
| 2008 | 3,075 |
| 2009 | 3,461 |
| 2010 | 4,100 |
| 2011 | 4,163 |
| 2012 | 4,434 |
| 2013 | 4,446 |
| 2014 | 5,051 |
| 2015 | 5,490 |
| 2016 | 6,139 |
| 2017 | 6,722 |
| 2018 | 7,353 |
| 2019 | 8,188 |
| 2020 | 10,027 |
| 2021 | 10,249 |
| 2022 | 9,607 |
| 2023 | 9,884 |
| 2024 | 10,029 |
| 2025 | 9,269 |
| 2026 | 7,672 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 72,151 |
| Unknown status | 29,244 |
| Recruiting | 18,007 |
| Not yet recruiting | 7,634 |
| Active, not recruiting | 5,073 |
| Terminated | 4,549 |
| Withdrawn | 2,976 |
| Enrolling by invitation | 1,868 |
| Suspended | 325 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Assiut University | 3,073 |
| Assistance Publique - Hôpitaux de Paris | 1,399 |
| National Taiwan University Hospital | 1,228 |
| AstraZeneca | 955 |
| Hospices Civils de Lyon | 895 |
| Cairo University | 890 |
| Mayo Clinic | 790 |
| National Heart, Lung, and Blood Institute (NHLBI) | 698 |
| Sohag University | 687 |
| University Hospital, Strasbourg, France | 656 |
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 |
|---|---|
| COVID-19 | 3,111 |
| Breast Neoplasms | 3,010 |
| Neoplasms | 2,715 |
| Obesity | 2,230 |
| Cardiovascular Diseases | 2,062 |
| Diabetes Mellitus | 2,021 |
| Stroke | 1,952 |
| Heart Failure | 1,823 |
| Diabetes Mellitus, Type 2 | 1,725 |
| Coronary Artery Disease | 1,708 |
Trials
Showing 26 to 50 of 141,827. Each trial links to its page on Pharma Observatory.
141,727 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.