Clinical trials
Pain trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
2,661 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 11 |
| 2001 | 21 |
| 2002 | 24 |
| 2003 | 27 |
| 2004 | 49 |
| 2005 | 69 |
| 2006 | 106 |
| 2007 | 93 |
| 2008 | 122 |
| 2009 | 117 |
| 2010 | 120 |
| 2011 | 132 |
| 2012 | 133 |
| 2013 | 125 |
| 2014 | 147 |
| 2015 | 117 |
| 2016 | 130 |
| 2017 | 107 |
| 2018 | 116 |
| 2019 | 122 |
| 2020 | 92 |
| 2021 | 119 |
| 2022 | 86 |
| 2023 | 107 |
| 2024 | 104 |
| 2025 | 108 |
| 2026 | 96 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 1,762 |
| Terminated | 307 |
| Recruiting | 210 |
| Unknown status | 118 |
| Withdrawn | 112 |
| Active, not recruiting | 66 |
| Not yet recruiting | 48 |
| Enrolling by invitation | 19 |
| Suspended | 15 |
| No longer available | 4 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Northwestern University | 54 |
| Stanford University | 50 |
| VA Office of Research and Development | 48 |
| Duke University | 44 |
| Mayo Clinic | 40 |
| Massachusetts General Hospital | 39 |
| Pfizer | 37 |
| Wake Forest University Health Sciences | 36 |
| University of Florida | 31 |
| University of California, San Diego | 30 |
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 | 2,661 |
| Agnosia | 225 |
| Chronic Pain | 187 |
| Anxiety Disorders | 167 |
| Postoperative Pain | 149 |
| Osteoarthritis | 105 |
| Neoplasms | 95 |
| Fibromyalgia | 91 |
| Fatigue | 87 |
| Acute Pain | 80 |
Trials
Showing 1 to 25 of 2,661. Each trial links to its page on Pharma Observatory.
2,561 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.