Clinical trials
Phase 2/3 trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
2,363 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 24 |
| 2001 | 34 |
| 2002 | 50 |
| 2003 | 63 |
| 2004 | 63 |
| 2005 | 90 |
| 2006 | 109 |
| 2007 | 84 |
| 2008 | 111 |
| 2009 | 94 |
| 2010 | 84 |
| 2011 | 79 |
| 2012 | 75 |
| 2013 | 74 |
| 2014 | 88 |
| 2015 | 83 |
| 2016 | 95 |
| 2017 | 85 |
| 2018 | 99 |
| 2019 | 105 |
| 2020 | 112 |
| 2021 | 123 |
| 2022 | 109 |
| 2023 | 103 |
| 2024 | 94 |
| 2025 | 79 |
| 2026 | 88 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 1,350 |
| Terminated | 358 |
| Recruiting | 235 |
| Active, not recruiting | 153 |
| Withdrawn | 102 |
| Unknown status | 99 |
| Not yet recruiting | 33 |
| Suspended | 17 |
| Enrolling by invitation | 16 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Mayo Clinic | 48 |
| Johns Hopkins University | 30 |
| M.D. Anderson Cancer Center | 30 |
| Pfizer | 29 |
| National Cancer Institute (NCI) | 28 |
| VA Office of Research and Development | 28 |
| Yale University | 26 |
| Stanford University | 22 |
| Bristol-Myers Squibb | 21 |
| New York State Psychiatric Institute | 21 |
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 |
|---|---|
| COVID-19 | 67 |
| Obesity | 47 |
| Alzheimer Disease | 40 |
| Prostatic Neoplasms | 36 |
| Diabetes Mellitus, Type 2 | 33 |
| Diabetes Mellitus | 32 |
| HIV Infections | 32 |
| Neoplasms | 31 |
| Stress Disorders, Post-Traumatic | 31 |
| Pain | 30 |
Trials
Showing 76 to 100 of 2,363. Each trial links to its page on Pharma Observatory.
2,263 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.