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 1 to 25 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.