Clinical trials
Phase 4 Pain trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
843 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 1 |
| 2001 | 6 |
| 2002 | 8 |
| 2003 | 8 |
| 2004 | 19 |
| 2005 | 19 |
| 2006 | 30 |
| 2007 | 30 |
| 2008 | 50 |
| 2009 | 44 |
| 2010 | 47 |
| 2011 | 60 |
| 2012 | 45 |
| 2013 | 48 |
| 2014 | 64 |
| 2015 | 41 |
| 2016 | 48 |
| 2017 | 42 |
| 2018 | 32 |
| 2019 | 39 |
| 2020 | 19 |
| 2021 | 26 |
| 2022 | 17 |
| 2023 | 32 |
| 2024 | 21 |
| 2025 | 18 |
| 2026 | 17 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 564 |
| Terminated | 98 |
| Unknown status | 96 |
| Withdrawn | 37 |
| Recruiting | 26 |
| Not yet recruiting | 16 |
| Suspended | 3 |
| Active, not recruiting | 2 |
| Enrolling by invitation | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Antonios Likourezos | 15 |
| Duke University | 13 |
| Northwestern University | 12 |
| University of California, San Diego | 12 |
| Oregon Health and Science University | 11 |
| Montefiore Medical Center | 8 |
| University of Sao Paulo | 7 |
| Chung-Ang University Hospital | 6 |
| Hospital for Special Surgery, New York | 6 |
| Johnson & Johnson Consumer and Personal Products Worldwide | 6 |
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 | 843 |
| Agnosia | 101 |
| Postoperative Pain | 95 |
| Acute Pain | 24 |
| Osteoarthritis | 22 |
| Neoplasms | 15 |
| Anxiety Disorders | 14 |
| Emergencies | 14 |
| Inflammation | 14 |
| Osteoarthritis, Knee | 14 |
Trials
Showing 76 to 100 of 843. Each trial links to its page on Pharma Observatory.
743 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
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