Clinical trials
Observational Pain trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
1,158 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 4 |
| 2001 | 7 |
| 2002 | 4 |
| 2003 | 6 |
| 2004 | 6 |
| 2005 | 14 |
| 2006 | 23 |
| 2007 | 29 |
| 2008 | 41 |
| 2009 | 28 |
| 2010 | 40 |
| 2011 | 41 |
| 2012 | 50 |
| 2013 | 32 |
| 2014 | 47 |
| 2015 | 51 |
| 2016 | 43 |
| 2017 | 52 |
| 2018 | 66 |
| 2019 | 59 |
| 2020 | 59 |
| 2021 | 65 |
| 2022 | 69 |
| 2023 | 90 |
| 2024 | 93 |
| 2025 | 70 |
| 2026 | 58 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 713 |
| Unknown status | 187 |
| Recruiting | 96 |
| Not yet recruiting | 47 |
| Terminated | 40 |
| Withdrawn | 26 |
| Active, not recruiting | 24 |
| Enrolling by invitation | 21 |
| Suspended | 4 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Hacettepe University | 16 |
| University Hospital, Clermont-Ferrand | 13 |
| Rigshospitalet, Denmark | 11 |
| University of Florida | 11 |
| Stanford University | 10 |
| Assistance Publique - Hôpitaux de Paris | 8 |
| M.D. Anderson Cancer Center | 8 |
| Oslo University Hospital | 8 |
| Children's Hospital Medical Center, Cincinnati | 7 |
| Janssen Korea, Ltd., Korea | 7 |
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 | 1,158 |
| Chronic Pain | 88 |
| Postoperative Pain | 74 |
| Anxiety Disorders | 73 |
| Agnosia | 56 |
| Fatigue | 38 |
| Neuralgia | 31 |
| Fibromyalgia | 30 |
| Neoplasms | 30 |
| Osteoarthritis | 30 |
Trials
Showing 51 to 75 of 1,158. Each trial links to its page on Pharma Observatory.
1,058 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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