Clinical trials
Trials with no applicable phase and unknown status
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
38,451 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 22 |
| 2001 | 22 |
| 2002 | 41 |
| 2003 | 64 |
| 2004 | 112 |
| 2005 | 175 |
| 2006 | 202 |
| 2007 | 284 |
| 2008 | 313 |
| 2009 | 437 |
| 2010 | 569 |
| 2011 | 688 |
| 2012 | 828 |
| 2013 | 1,072 |
| 2014 | 1,327 |
| 2015 | 1,541 |
| 2016 | 2,070 |
| 2017 | 2,388 |
| 2018 | 2,906 |
| 2019 | 3,293 |
| 2020 | 3,451 |
| 2021 | 4,170 |
| 2022 | 4,568 |
| 2023 | 4,766 |
| 2024 | 2,917 |
| 2025 | 57 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Unknown status | 38,451 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Cairo University | 1,131 |
| Assiut University | 567 |
| National Taiwan University Hospital | 326 |
| Riphah International University | 279 |
| Seoul National University Hospital | 244 |
| Assistance Publique - Hôpitaux de Paris | 216 |
| Sohag University | 208 |
| Ain Shams University | 200 |
| The University of Hong Kong | 192 |
| Mansoura University | 191 |
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 |
|---|---|
| Obesity | 771 |
| Stroke | 739 |
| Anxiety Disorders | 660 |
| Pain | 657 |
| Breast Neoplasms | 549 |
| Diabetes Mellitus, Type 2 | 545 |
| Postoperative Pain | 471 |
| Diabetes Mellitus | 449 |
| Neoplasms | 408 |
| COVID-19 | 377 |
Trials
Showing 51 to 75 of 38,451. Each trial links to its page on Pharma Observatory.
38,351 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.