Clinical trials
Completed Observational trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
72,151 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 365 |
| 2001 | 395 |
| 2002 | 473 |
| 2003 | 694 |
| 2004 | 891 |
| 2005 | 1,167 |
| 2006 | 1,541 |
| 2007 | 1,889 |
| 2008 | 2,237 |
| 2009 | 2,520 |
| 2010 | 2,923 |
| 2011 | 2,882 |
| 2012 | 3,071 |
| 2013 | 3,043 |
| 2014 | 3,402 |
| 2015 | 3,644 |
| 2016 | 3,893 |
| 2017 | 4,059 |
| 2018 | 4,290 |
| 2019 | 4,381 |
| 2020 | 5,210 |
| 2021 | 4,903 |
| 2022 | 4,092 |
| 2023 | 3,376 |
| 2024 | 2,738 |
| 2025 | 1,798 |
| 2026 | 438 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 72,151 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| AstraZeneca | 758 |
| National Heart, Lung, and Blood Institute (NHLBI) | 633 |
| Assistance Publique - Hôpitaux de Paris | 604 |
| Hospices Civils de Lyon | 468 |
| Mayo Clinic | 452 |
| Bayer | 449 |
| Pfizer | 433 |
| University Hospital, Montpellier | 405 |
| National Taiwan University Hospital | 385 |
| Cairo University | 383 |
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 | 1,841 |
| Breast Neoplasms | 1,428 |
| Obesity | 1,283 |
| Neoplasms | 1,201 |
| Cardiovascular Diseases | 1,190 |
| Diabetes Mellitus | 1,188 |
| Diabetes Mellitus, Type 2 | 1,060 |
| Stroke | 993 |
| Heart Failure | 872 |
| Pulmonary Disease, Chronic Obstructive | 852 |
Trials
Showing 51 to 75 of 72,151. Each trial links to its page on Pharma Observatory.
72,051 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.