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| Withdrawn | 2,976 |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 1 to 25 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.