Clinical trials
Terminated COVID-19 trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
272 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2020 | 138 |
| 2021 | 86 |
| 2022 | 32 |
| 2023 | 10 |
| 2024 | 5 |
| 2025 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Terminated | 272 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Pfizer | 6 |
| National Institute of Allergy and Infectious Diseases (NIAID) | 5 |
| Regeneron Pharmaceuticals | 5 |
| Columbia University | 4 |
| Duke University | 4 |
| Hackensack Meridian Health | 4 |
| ImmunityBio, Inc. | 4 |
| Massachusetts General Hospital | 4 |
| University of North Carolina, Chapel Hill | 4 |
| Corewell Health East | 3 |
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 |
|---|---|
| COVID-19 | 272 |
| Coronavirus Infections | 62 |
| Severe Acute Respiratory Syndrome | 18 |
| Respiratory Distress Syndrome | 17 |
| Pneumonia | 16 |
| Cytokine Release Syndrome | 9 |
| Virus Diseases | 9 |
| Post-Acute COVID-19 Syndrome | 7 |
| Respiratory Insufficiency | 6 |
| Acute Lung Injury | 5 |
Trials
Showing 1 to 25 of 272. Each trial links to its page on Pharma Observatory.
172 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.