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| Withdrawn | 37 |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 1 to 25 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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