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| Withdrawn | 22 |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 76 to 100 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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