Clinical Trials in Koshigaya, 2026
Every study on the ClinicalTrials.gov registry that lists a site in Japan and is open, about to open, active-but-closed, or enrolling by invitation. Filter it, cite it, and take it away as a file.
About this register
This register is built from ClinicalTrials.gov, the trial registry run by the U.S. National Library of Medicine. It includes every study on the registry that lists at least one investigative site in Japan and is recruiting, not yet recruiting, active but no longer recruiting, or enrolling by invitation: 2,516 studies in total at the last sync on 12 Nov 2026, 03:19 UTC. The full list can be downloaded as CSV or queried as JSON through the register API.
This page shows the 19 of those studies with a site in Koshigaya.
How many clinical trials are recruiting in Koshigaya?
10 of the 19 studies on this page are recruiting new participants as of the 12 Nov 2026, 03:19 UTC sync. A further 0 have not yet opened recruitment, 8 are active but closed to new participants, and 1 are enrolling by invitation only. Eligibility for any study is decided by its study team.
Summary by phase
| Phase | Studies | Recruiting | Share |
|---|---|---|---|
| Phase 3 | 12 | 6 | 63.2% |
| Observational | 3 | 1 | 15.8% |
| Phase 2 | 2 | 2 | 10.5% |
| Not applicable | 1 | 0 | 5.3% |
| Phase 2/3 | 1 | 1 | 5.3% |
Most active sponsors
| Lead sponsor | Studies | Recruiting |
|---|---|---|
| Janssen Research & Development, LLC | 6 | 3 |
| Sanofi | 2 | 2 |
| Aragon Pharmaceuticals, Inc. | 1 | 0 |
| ARCAGY/ GINECO GROUP | 1 | 1 |
| Celgene | 1 | 1 |
| Eli Lilly and Company | 1 | 1 |
| Loxo Oncology, Inc. | 1 | 0 |
| McGill University Health Centre/Research Institute of the McGill University Health Centre | 1 | 0 |
| Medtronic | 1 | 1 |
| Medtronic Spinal and Biologics | 1 | 1 |
Other trial registries in Japan
This register lists Japan studies from ClinicalTrials.gov. Many studies in Japan are registered only in a national registry. We do not copy those records; search them directly:
- jRCT (Japan Registry of Clinical Trials) — run by the Ministry of Health, Labour and Welfare; trials under Japan's Clinical Trials Act and other clinical research
- UMIN-CTR — run by the University of Tokyo Hospital's UMIN Center; many academic and investigator-led studies