Clinical trials
Trials in Belgium
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
15,279 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 67 |
| 2001 | 86 |
| 2002 | 124 |
| 2003 | 182 |
| 2004 | 230 |
| 2005 | 258 |
| 2006 | 345 |
| 2007 | 374 |
| 2008 | 481 |
| 2009 | 448 |
| 2010 | 571 |
| 2011 | 604 |
| 2012 | 619 |
| 2013 | 662 |
| 2014 | 737 |
| 2015 | 740 |
| 2016 | 667 |
| 2017 | 826 |
| 2018 | 867 |
| 2019 | 898 |
| 2020 | 906 |
| 2021 | 968 |
| 2022 | 805 |
| 2023 | 775 |
| 2024 | 722 |
| 2025 | 691 |
| 2026 | 422 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 9,137 |
| Recruiting | 1,767 |
| Terminated | 1,442 |
| Unknown status | 1,355 |
| Active, not recruiting | 1,098 |
| Withdrawn | 169 |
| Not yet recruiting | 152 |
| Enrolling by invitation | 100 |
| Suspended | 32 |
| No longer available | 16 |
| Approved for marketing | 9 |
| Available | 2 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Universitaire Ziekenhuizen KU Leuven | 868 |
| University Hospital, Ghent | 659 |
| Pfizer | 482 |
| Novartis Pharmaceuticals | 472 |
| Universitair Ziekenhuis Brussel | 346 |
| GlaxoSmithKline | 327 |
| Hoffmann-La Roche | 323 |
| KU Leuven | 323 |
| Janssen Research & Development, LLC | 319 |
| Cliniques universitaires Saint-Luc- Université Catholique de Louvain | 316 |
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 | 519 |
| Neoplasms | 413 |
| Carcinoma, Non-Small-Cell Lung | 390 |
| Colorectal Neoplasms | 253 |
| Neoplasm Metastasis | 249 |
| Stroke | 228 |
| Prostatic Neoplasms | 207 |
| Pulmonary Disease, Chronic Obstructive | 201 |
| Atrial Fibrillation | 199 |
| Ovarian Neoplasms | 188 |
Trials
Showing 51 to 75 of 15,279. Each trial links to its page on Pharma Observatory.
15,179 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.
Go deeper on Pharma Observatory
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