Clinical trials
Withdrawn COVID-19 trials with no applicable phase
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
71 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2020 | 28 |
| 2021 | 20 |
| 2022 | 12 |
| 2023 | 8 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Withdrawn | 71 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Assistance Publique - Hôpitaux de Paris | 5 |
| Stanford University | 3 |
| Charles Drew University of Medicine and Science | 2 |
| Duke University | 2 |
| King Hussein Cancer Center | 2 |
| Mayo Clinic | 2 |
| Montefiore Medical Center | 2 |
| Norwegian Institute of Public Health | 2 |
| Second Affiliated Hospital of Xi'an Jiaotong University | 2 |
| University of Michigan | 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 |
|---|---|
| COVID-19 | 71 |
| Coronavirus Infections | 10 |
| Hypoxia | 3 |
| Pneumonia | 3 |
| Respiratory Insufficiency | 3 |
| Anosmia | 2 |
| Influenza, Human | 2 |
| Olfaction Disorders | 2 |
| Severe Acute Respiratory Syndrome | 2 |
| Ageusia | 1 |
Trials
Showing 1 to 25 of 71. 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.