Clinical trials
Completed Pain trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
1,762 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 10 |
| 2001 | 18 |
| 2002 | 21 |
| 2003 | 26 |
| 2004 | 45 |
| 2005 | 58 |
| 2006 | 74 |
| 2007 | 65 |
| 2008 | 93 |
| 2009 | 88 |
| 2010 | 89 |
| 2011 | 100 |
| 2012 | 94 |
| 2013 | 92 |
| 2014 | 108 |
| 2015 | 80 |
| 2016 | 106 |
| 2017 | 81 |
| 2018 | 86 |
| 2019 | 81 |
| 2020 | 62 |
| 2021 | 68 |
| 2022 | 55 |
| 2023 | 50 |
| 2024 | 46 |
| 2025 | 25 |
| 2026 | 5 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 1,762 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Stanford University | 35 |
| Mayo Clinic | 32 |
| Northwestern University | 32 |
| VA Office of Research and Development | 31 |
| Duke University | 27 |
| University of Washington | 25 |
| Wake Forest University Health Sciences | 25 |
| Pfizer | 24 |
| University of Florida | 23 |
| Massachusetts General Hospital | 22 |
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 |
|---|---|
| Pain | 1,762 |
| Agnosia | 134 |
| Anxiety Disorders | 106 |
| Chronic Pain | 102 |
| Postoperative Pain | 96 |
| Osteoarthritis | 72 |
| Fatigue | 65 |
| Neoplasms | 64 |
| Acute Pain | 60 |
| Fibromyalgia | 59 |
Trials
Showing 1 to 25 of 1,762. Each trial links to its page on Pharma Observatory.
1,662 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.