Clinical trials
Withdrawn Observational trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
1,143 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 3 |
| 2001 | 2 |
| 2002 | 6 |
| 2003 | 10 |
| 2004 | 12 |
| 2005 | 29 |
| 2006 | 35 |
| 2007 | 42 |
| 2008 | 65 |
| 2009 | 54 |
| 2010 | 59 |
| 2011 | 49 |
| 2012 | 60 |
| 2013 | 55 |
| 2014 | 63 |
| 2015 | 48 |
| 2016 | 51 |
| 2017 | 54 |
| 2018 | 42 |
| 2019 | 63 |
| 2020 | 99 |
| 2021 | 57 |
| 2022 | 41 |
| 2023 | 50 |
| 2024 | 18 |
| 2025 | 29 |
| 2026 | 19 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Withdrawn | 1,143 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| ProgenaBiome | 34 |
| University of California, Irvine | 30 |
| University of Minnesota | 23 |
| Massachusetts General Hospital | 21 |
| Stanford University | 18 |
| University of Texas Southwestern Medical Center | 15 |
| Medical College of Wisconsin | 14 |
| Ohio State University | 14 |
| Mayo Clinic | 13 |
| NYU Langone Health | 13 |
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 |
|---|---|
| Neoplasms | 42 |
| Breast Neoplasms | 35 |
| Obesity | 25 |
| Prostatic Neoplasms | 24 |
| Heart Failure | 22 |
| Coronary Artery Disease | 17 |
| Diabetes Mellitus | 17 |
| Lung Neoplasms | 17 |
| Asthma | 14 |
| COVID-19 | 14 |
Trials
Showing 1 to 25 of 1,143. Each trial links to its page on Pharma Observatory.
1,043 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.