Clinical trials
Trials in Bulgaria
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
3,171 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 6 |
| 2001 | 9 |
| 2002 | 7 |
| 2003 | 19 |
| 2004 | 38 |
| 2005 | 56 |
| 2006 | 77 |
| 2007 | 81 |
| 2008 | 101 |
| 2009 | 106 |
| 2010 | 114 |
| 2011 | 153 |
| 2012 | 140 |
| 2013 | 140 |
| 2014 | 151 |
| 2015 | 178 |
| 2016 | 157 |
| 2017 | 160 |
| 2018 | 167 |
| 2019 | 166 |
| 2020 | 167 |
| 2021 | 180 |
| 2022 | 177 |
| 2023 | 164 |
| 2024 | 177 |
| 2025 | 182 |
| 2026 | 86 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 2,095 |
| Terminated | 352 |
| Active, not recruiting | 307 |
| Recruiting | 287 |
| Unknown status | 62 |
| Enrolling by invitation | 28 |
| Withdrawn | 22 |
| Not yet recruiting | 10 |
| No longer available | 3 |
| Approved for marketing | 3 |
| Suspended | 1 |
| Available | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| AstraZeneca | 221 |
| Novartis Pharmaceuticals | 163 |
| Hoffmann-La Roche | 135 |
| Pfizer | 133 |
| GlaxoSmithKline | 103 |
| Novo Nordisk A/S | 89 |
| Bayer | 87 |
| Sanofi | 84 |
| Janssen Research & Development, LLC | 82 |
| AbbVie | 79 |
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 |
|---|---|
| Arthritis, Rheumatoid | 137 |
| Diabetes Mellitus, Type 2 | 118 |
| Asthma | 107 |
| Pulmonary Disease, Chronic Obstructive | 95 |
| Breast Neoplasms | 89 |
| Colitis, Ulcerative | 87 |
| Carcinoma, Non-Small-Cell Lung | 78 |
| Schizophrenia | 78 |
| Heart Failure | 70 |
| Crohn Disease | 67 |
Trials
Showing 1 to 25 of 3,171. Each trial links to its page on Pharma Observatory.
3,071 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.
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