Clinical trials
Phase 4 trials in Bulgaria
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
111 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 1 |
| 2002 | 2 |
| 2003 | 1 |
| 2004 | 6 |
| 2005 | 5 |
| 2006 | 3 |
| 2007 | 1 |
| 2008 | 4 |
| 2009 | 8 |
| 2010 | 4 |
| 2011 | 14 |
| 2012 | 8 |
| 2013 | 4 |
| 2014 | 6 |
| 2015 | 11 |
| 2016 | 7 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 2 |
| 2026 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 89 |
| Terminated | 9 |
| Unknown status | 6 |
| Active, not recruiting | 4 |
| Recruiting | 3 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Novartis Pharmaceuticals | 13 |
| Hoffmann-La Roche | 11 |
| GlaxoSmithKline | 7 |
| AstraZeneca | 6 |
| Pfizer | 6 |
| Boehringer Ingelheim | 4 |
| A. Vogel AG | 3 |
| Association Asthma, Bulgaria | 3 |
| Sanofi | 3 |
| AbbVie | 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 |
|---|---|
| Asthma | 8 |
| Diabetes Mellitus, Type 2 | 7 |
| Pulmonary Disease, Chronic Obstructive | 4 |
| Schizophrenia | 4 |
| Arthritis, Rheumatoid | 3 |
| Diabetes Mellitus | 3 |
| Hemophilia A | 3 |
| Hypertension | 3 |
| Major Depressive Disorder | 3 |
| Neoplasms | 3 |
Trials
Showing 26 to 50 of 111. Each trial links to its page on Pharma Observatory.
11 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.
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