Clinical trials
Observational COVID-19 trials with unknown status
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
931 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2011 | 1 |
| 2013 | 1 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 7 |
| 2020 | 483 |
| 2021 | 260 |
| 2022 | 113 |
| 2023 | 55 |
| 2024 | 6 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Unknown status | 931 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Assiut University | 54 |
| University Hospital, Strasbourg, France | 35 |
| Assistance Publique - Hôpitaux de Paris | 25 |
| Cairo University | 10 |
| University Hospital, Montpellier | 9 |
| Ain Shams University | 7 |
| Central Hospital, Nancy, France | 6 |
| Fondation Hôpital Saint-Joseph | 6 |
| The Second Affiliated Hospital of Chongqing Medical University | 6 |
| University Hospital, Clermont-Ferrand | 6 |
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 | 931 |
| Coronavirus Infections | 53 |
| Severe Acute Respiratory Syndrome | 24 |
| Anxiety Disorders | 22 |
| Pneumonia | 21 |
| Neoplasms | 18 |
| Respiratory Distress Syndrome | 17 |
| Post-Acute COVID-19 Syndrome | 16 |
| Cardiovascular Diseases | 14 |
| Critical Illness | 14 |
Trials
Showing 1 to 25 of 931. Each trial links to its page on Pharma Observatory.
831 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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