🇯🇵 Japan Country × Condition
breast cancer Clinical Trials in Japan
Active clinical trials for breast cancer with research sites in Japan. All data sourced live from ClinicalTrials.gov — updated daily.
Active Trials: 3 // Recruiting: 3 Phases: Phase 1, Phase 2, Phase 2 // Updated: Daily
Total Trials
3
Recruiting Now
3
Country
🇯🇵 Japan
Active Trials in Japan (3)
NCT07164976 Phase 1, Phase 2
Recruiting
Ribociclib for HR-positive HER2-negative Metastatic Breast Cancer
Enrollment
86 pts
Country
🇯🇵 Japan
Nagoya City University
View Trial → NCT07766018 Phase 2
Recruiting
A Phase 2 Bridging Study of Elacestrant Monotherapy in Advanced or Metastatic Breast Cancer
Enrollment
70 pts
Country
🇯🇵 Japan
Stemline Therapeutics, Inc.
View Trial → NCT05485766 Phase 2
Recruiting
Novel Neoadjuvant and Adjuvant Strategy for Germline BRCA 1/2 Mutated Triple Negative Breast Cancer
Enrollment
23 pts
Country
🇯🇵 Japan
Okayama University
View Trial → Frequently Asked Questions
How many breast cancer clinical trials are active in Japan?
There are currently 3 active clinical trials for breast cancer with sites in Japan, of which 3 are actively recruiting patients.
How can I join a breast cancer clinical trial in Japan?
To join a breast cancer clinical trial in Japan, select a recruiting trial below and check the eligibility criteria. Contact the trial's principal investigator or the listed site in Japan directly. All trials listed here are sourced from ClinicalTrials.gov, the official U.S. registry of clinical studies.
What phases are breast cancer trials in Japan?
Active breast cancer trials in Japan span Phase 1, Phase 2, Phase 2. Phase I trials test safety, Phase II test efficacy, and Phase III compare against standard treatments in larger patient populations.
ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer · Last Reviewed: November 2026 · Data Methodology