Clinical trials
Enrolling by invitation Phase 4 trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
93 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2008 | 1 |
| 2011 | 1 |
| 2014 | 1 |
| 2016 | 1 |
| 2018 | 5 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 5 |
| 2022 | 4 |
| 2023 | 8 |
| 2024 | 18 |
| 2025 | 22 |
| 2026 | 24 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Enrolling by invitation | 93 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Mayo Clinic | 11 |
| Baylor Research Institute | 5 |
| University of California, San Francisco | 4 |
| OrthoCarolina Research Institute, Inc. | 3 |
| The University of Texas Health Science Center, Houston | 3 |
| Campbell Clinic | 2 |
| Endeavor Health | 2 |
| Rothman Institute Orthopaedics | 2 |
| Sarasota Memorial Health Care System | 2 |
| University of Arizona | 2 |
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 |
|---|---|
| Postoperative Pain | 8 |
| Cognitive Dysfunction | 3 |
| Dementia | 3 |
| Lewy Body Disease | 3 |
| Agnosia | 2 |
| Alzheimer Disease | 2 |
| Carcinoma, Hepatocellular | 2 |
| Diabetes Mellitus | 2 |
| Diabetes Mellitus, Type 2 | 2 |
| Diabetic Retinopathy | 2 |
Trials
Showing 1 to 25 of 93. Each trial links to its page 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.