Clinical trials
Observational trials in Bulgaria
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
152 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2001 | 1 |
| 2004 | 3 |
| 2005 | 2 |
| 2006 | 2 |
| 2007 | 4 |
| 2008 | 2 |
| 2009 | 4 |
| 2010 | 5 |
| 2011 | 5 |
| 2012 | 9 |
| 2013 | 7 |
| 2014 | 14 |
| 2015 | 10 |
| 2016 | 6 |
| 2017 | 7 |
| 2018 | 8 |
| 2019 | 10 |
| 2020 | 12 |
| 2021 | 7 |
| 2022 | 7 |
| 2023 | 7 |
| 2024 | 10 |
| 2025 | 8 |
| 2026 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 101 |
| Recruiting | 17 |
| Active, not recruiting | 13 |
| Unknown status | 12 |
| Terminated | 6 |
| Enrolling by invitation | 3 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| AstraZeneca | 17 |
| Hoffmann-La Roche | 13 |
| Boehringer Ingelheim | 8 |
| Medical University of Sofia | 6 |
| AbbVie | 5 |
| Amgen | 5 |
| Pfizer | 5 |
| Bayer | 4 |
| Novo Nordisk A/S | 4 |
| Genzyme, a Sanofi Company | 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 |
|---|---|
| Breast Neoplasms | 7 |
| Coronary Artery Disease | 7 |
| Atrial Fibrillation | 6 |
| Heart Failure | 6 |
| Pulmonary Disease, Chronic Obstructive | 6 |
| Hypertension | 5 |
| Acute Coronary Syndrome | 4 |
| Anemia | 4 |
| Diabetes Mellitus, Type 2 | 4 |
| Hepatitis B, Chronic | 4 |
Trials
Showing 1 to 25 of 152. Each trial links to its page on Pharma Observatory.
52 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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