Clinical trials
Observational trials in Japan
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
1,163 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 4 |
| 2001 | 5 |
| 2002 | 4 |
| 2003 | 8 |
| 2004 | 17 |
| 2005 | 12 |
| 2006 | 14 |
| 2007 | 25 |
| 2008 | 30 |
| 2009 | 35 |
| 2010 | 46 |
| 2011 | 41 |
| 2012 | 65 |
| 2013 | 55 |
| 2014 | 61 |
| 2015 | 67 |
| 2016 | 72 |
| 2017 | 58 |
| 2018 | 60 |
| 2019 | 62 |
| 2020 | 64 |
| 2021 | 69 |
| 2022 | 65 |
| 2023 | 69 |
| 2024 | 58 |
| 2025 | 48 |
| 2026 | 29 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 775 |
| Recruiting | 156 |
| Unknown status | 107 |
| Active, not recruiting | 87 |
| Enrolling by invitation | 15 |
| Terminated | 11 |
| Not yet recruiting | 7 |
| Withdrawn | 4 |
| Suspended | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| AstraZeneca | 79 |
| Bayer | 77 |
| Takeda | 65 |
| Pfizer | 59 |
| Novo Nordisk A/S | 45 |
| Boehringer Ingelheim | 42 |
| Bristol-Myers Squibb | 42 |
| Eisai Co., Ltd. | 30 |
| AbbVie | 28 |
| Novartis Pharmaceuticals | 26 |
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 |
|---|---|
| Diabetes Mellitus, Type 2 | 51 |
| Coronary Artery Disease | 31 |
| Carcinoma, Non-Small-Cell Lung | 28 |
| Atrial Fibrillation | 24 |
| Diabetes Mellitus | 23 |
| Heart Failure | 23 |
| Arthritis, Rheumatoid | 20 |
| Pulmonary Disease, Chronic Obstructive | 20 |
| Asthma | 19 |
| Stomach Neoplasms | 17 |
Trials
Showing 1 to 25 of 1,163. Each trial links to its page on Pharma Observatory.
1,063 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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