Clinical trials
Withdrawn trials in the United States with no applicable phase
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
2,382 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 2 |
| 2001 | 2 |
| 2002 | 4 |
| 2003 | 3 |
| 2004 | 6 |
| 2005 | 25 |
| 2006 | 37 |
| 2007 | 54 |
| 2008 | 55 |
| 2009 | 90 |
| 2010 | 77 |
| 2011 | 74 |
| 2012 | 102 |
| 2013 | 116 |
| 2014 | 116 |
| 2015 | 123 |
| 2016 | 134 |
| 2017 | 125 |
| 2018 | 135 |
| 2019 | 149 |
| 2020 | 145 |
| 2021 | 171 |
| 2022 | 142 |
| 2023 | 139 |
| 2024 | 131 |
| 2025 | 121 |
| 2026 | 71 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Withdrawn | 2,382 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| NYU Langone Health | 61 |
| Stanford University | 60 |
| Johns Hopkins University | 56 |
| Mayo Clinic | 52 |
| Duke University | 47 |
| University of Minnesota | 39 |
| Wake Forest University Health Sciences | 38 |
| Massachusetts General Hospital | 37 |
| University of California, San Francisco | 35 |
| University of California, Los Angeles | 32 |
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 | 59 |
| Breast Neoplasms | 46 |
| Pain | 44 |
| Diabetes Mellitus | 42 |
| Heart Failure | 41 |
| Anxiety Disorders | 39 |
| Hypertension | 34 |
| Sleep Apnea, Obstructive | 34 |
| Stroke | 33 |
| Diabetes Mellitus, Type 2 | 32 |
Trials
Showing 1 to 25 of 2,382. Each trial links to its page on Pharma Observatory.
2,282 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.