Clinical trials
Withdrawn trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
16,895 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 25 |
| 2001 | 20 |
| 2002 | 37 |
| 2003 | 55 |
| 2004 | 83 |
| 2005 | 173 |
| 2006 | 298 |
| 2007 | 366 |
| 2008 | 492 |
| 2009 | 543 |
| 2010 | 544 |
| 2011 | 569 |
| 2012 | 649 |
| 2013 | 673 |
| 2014 | 751 |
| 2015 | 806 |
| 2016 | 924 |
| 2017 | 834 |
| 2018 | 949 |
| 2019 | 1,058 |
| 2020 | 1,224 |
| 2021 | 1,192 |
| 2022 | 1,070 |
| 2023 | 944 |
| 2024 | 787 |
| 2025 | 715 |
| 2026 | 416 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Withdrawn | 16,895 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| M.D. Anderson Cancer Center | 227 |
| Mayo Clinic | 181 |
| Stanford University | 181 |
| Johns Hopkins University | 161 |
| Massachusetts General Hospital | 160 |
| NYU Langone Health | 154 |
| Wake Forest University Health Sciences | 146 |
| University of Alabama at Birmingham | 131 |
| Duke University | 123 |
| University of California, San Francisco | 114 |
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 |
|---|---|
| Breast Neoplasms | 449 |
| COVID-19 | 369 |
| Neoplasms | 331 |
| Carcinoma, Non-Small-Cell Lung | 254 |
| Prostatic Neoplasms | 246 |
| Obesity | 242 |
| Pain | 240 |
| Diabetes Mellitus | 218 |
| Heart Failure | 216 |
| Diabetes Mellitus, Type 2 | 195 |
Trials
Showing 1 to 25 of 16,895. Each trial links to its page on Pharma Observatory.
16,795 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.