Clinical trials
Phase 4 trials with unknown status
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
6,225 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 12 |
| 2001 | 8 |
| 2002 | 17 |
| 2003 | 33 |
| 2004 | 57 |
| 2005 | 82 |
| 2006 | 104 |
| 2007 | 141 |
| 2008 | 188 |
| 2009 | 223 |
| 2010 | 240 |
| 2011 | 304 |
| 2012 | 260 |
| 2013 | 302 |
| 2014 | 379 |
| 2015 | 434 |
| 2016 | 437 |
| 2017 | 378 |
| 2018 | 352 |
| 2019 | 391 |
| 2020 | 429 |
| 2021 | 457 |
| 2022 | 397 |
| 2023 | 370 |
| 2024 | 182 |
| 2025 | 8 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Unknown status | 6,225 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Cairo University | 92 |
| Assiut University | 85 |
| National Taiwan University Hospital | 74 |
| Seoul National University Hospital | 67 |
| Peking Union Medical College Hospital | 59 |
| Ain Shams University | 56 |
| Yonsei University | 45 |
| Sun Yat-sen University | 42 |
| Shandong University | 39 |
| Mahidol University | 36 |
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 |
|---|---|
| Diabetes Mellitus, Type 2 | 167 |
| Postoperative Pain | 166 |
| Coronary Artery Disease | 154 |
| Hypertension | 116 |
| Diabetes Mellitus | 106 |
| Pain | 96 |
| COVID-19 | 77 |
| Heart Failure | 75 |
| Hepatitis B, Chronic | 72 |
| Atrial Fibrillation | 71 |
Trials
Showing 1 to 25 of 6,225. Each trial links to its page on Pharma Observatory.
6,125 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.