Clinical trials
Phase 4 COVID-19 trials with unknown status
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
77 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2013 | 1 |
| 2020 | 28 |
| 2021 | 32 |
| 2022 | 8 |
| 2023 | 7 |
| 2024 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Unknown status | 77 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| China National Biotec Group Company Limited | 9 |
| Shahid Beheshti University of Medical Sciences | 4 |
| ClinAmygate | 3 |
| Ain Shams University | 2 |
| Clinical Urology and Epidemiology Working Group | 2 |
| Jiangsu Province Centers for Disease Control and Prevention | 2 |
| Shandong Provincial Hospital | 2 |
| Sinovac Research and Development Co., Ltd. | 2 |
| The Immunobiological Technology Institute (Bio-Manguinhos) / Oswaldo Cruz Foundation (Fiocruz) | 2 |
| Ahmed Essam | 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 | 77 |
| Bronchitis, Chronic | 3 |
| HIV Infections | 3 |
| Pneumonia | 3 |
| Pulmonary Disease, Chronic Obstructive | 3 |
| Coronavirus Infections | 2 |
| Post-Acute COVID-19 Syndrome | 2 |
| Anosmia | 1 |
| Asymptomatic Infections | 1 |
| Atherosclerosis | 1 |
Trials
Showing 1 to 25 of 77. 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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