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Trackers› Clinical trials› Prostatic Neoplasms
Clinical trial register · Japan

Prostatic Neoplasms Trials in Japan, 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.

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Source: ClinicalTrials.gov, U.S. National Library of Medicine. Complete coverage — all 2510 matching records held by the registry are in this view. Synced 06 Nov 2026, 03:19 UTC
2510
Studies in scope
all four open statuses
1283
Recruiting now
open to new participants
354
Lead sponsors
across recruiting studies
Top sites
Kobe 6 Sapporo 4 Kanazawa 4 Kashiwa 4 Nagoya 3
Narrow the registerReset
Recruitment status
Phase
Lead sponsor
Janssen Research & Development, LLC4 Aragon Pharmaceuticals, Inc.2 Merck Sharp & Dohme LLC2 Novartis Pharmaceuticals1 Eli Lilly and Company1
Site location
Kobe6 Sapporo4 Kanazawa4 Kashiwa4 Nagoya3
All 33 locations
Target enrolment
to

Prostatic Neoplasms trials in Japan

10 of 2510 studies
Download
Status
Study
Lead sponsor
Phase
Enrol
Sites in Japan
Start
Recruiting
Janssen Research & Development, LLC
Phase 2
100
Kobe
2026-09-16
Recruiting
Merck Sharp & Dohme LLC
Phase 3
1,440
Nagoya, Sakura, Tōon, Kitakyushu, Kurume, Sapporo, Kobe, Kahoku-gun
2025-05-13
Recruiting
Merck Sharp & Dohme LLC
Phase 3
1,314
Sakura, Eiheiji-cho,Yoshida-gun, Kitakyushu, Sapporo, Kobe, Mukai-awagasaki, Kita, Yokohama
2023-12-18
Recruiting
Janssen Research & Development, LLC
Phase 1
355
Tokyo
2023-11-01
Active, closed
Eli Lilly and Company
Phase 3
925
Nagoya, Kashiwa, Kisarazu, Sakura, Sapporo, Kobe, Kanazawa, Kita
2022-04-14
Active, closed
Janssen Research & Development, LLC
Phase 1
216
Kashiwa, Yokohama
2021-07-13
Active, closed
Novartis Pharmaceuticals
Phase 3
1,144
Nagoya, Sapporo, Kobe, Yokohama, Kumamoto, Suita, Kitaadachi-gun, Bunkyo Ku
2021-06-09
Active, closed
Janssen Research & Development, LLC
Phase 3
2,517
Akita, Chiba, Chūōku, Hakodate, Hirosaki, Kanazawa, Kobe, Koshigaya
2019-06-11
Active, closed
Aragon Pharmaceuticals, Inc.
Phase 3
982
Fukuoka, Kanazawa, Kashiwa, Kita-Gun, Kumamoto, Kurume, Matsuyama, Miyazaki
2014-11-26
Active, closed
Aragon Pharmaceuticals, Inc.
Phase 3
1,207
Akita, Fukuoka, Gifu, Hakodate, Hiroshima, Hokkaido, Kanazawa, Kashiwa
2013-10-14
Rows per page Showing 1–10 of 10
1
Cite this view

Priya Life Science (2026). Clinical trial register: studies with a Japanese investigative site, filtered. Derived from ClinicalTrials.gov. Retrieved 6 November 2026. https://priyalifescience.com/clinical-trials-japan/condition/prostatic-neoplasms

Query this register directly
GET /api/trials?country=in&status=recruiting&format=json Try it now →

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: 2,510 studies in total at the last sync on 06 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 10 of those studies listing the condition Prostatic Neoplasms.

How many Prostatic Neoplasms trials are recruiting in Japan?

4 of the 10 studies on this page are recruiting new participants as of the 06 Nov 2026, 03:19 UTC sync. A further 0 have not yet opened recruitment, 6 are active but closed to new participants, and 0 are enrolling by invitation only. Eligibility for any study is decided by its study team.

Summary by phase

Studies by phase (Prostatic Neoplasms), 10 studies
PhaseStudiesRecruitingShare
Phase 37270%
Phase 12120%
Phase 21110%

Most active sponsors

Lead sponsors with the most studies (Prostatic Neoplasms)
Lead sponsorStudiesRecruiting
Janssen Research & Development, LLC42
Aragon Pharmaceuticals, Inc.20
Merck Sharp & Dohme LLC22
Eli Lilly and Company10
Novartis Pharmaceuticals10
→

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
Listing here is informational and not medical advice; eligibility is determined by each study team. See also the Ireland, UK, EU, USA and China registers.