Clinical trials
Withdrawn Observational COVID-19 trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
63 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2020 | 25 |
| 2021 | 19 |
| 2022 | 11 |
| 2023 | 5 |
| 2024 | 3 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Withdrawn | 63 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| University Hospital, Lille | 4 |
| Barts & The London NHS Trust | 2 |
| Centre Hospitalier Universitaire de Nīmes | 2 |
| Duke University | 2 |
| National Institutes of Health Clinical Center (CC) | 2 |
| Aarhus University Hospital | 1 |
| Adaptive Biotechnologies | 1 |
| Applied Biology, Inc. | 1 |
| Becton, Dickinson and Company | 1 |
| Brno University Hospital | 1 |
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 | 63 |
| Coronavirus Infections | 3 |
| Severe Acute Respiratory Syndrome | 3 |
| Asthma | 2 |
| Pneumonia | 2 |
| Post-Acute COVID-19 Syndrome | 2 |
| Acute Lung Injury | 1 |
| Alopecia | 1 |
| Alzheimer Disease | 1 |
| Anosmia | 1 |
Trials
Showing 1 to 25 of 63. 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
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