Z-Endoxifen Hydrochloride in Treating Patients With Metastatic or Locally Recurrent Estrogen Receptor-Positive Breast Cancer
Public ClinicalTrials.gov record NCT01327781. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Phase I Study of Z-Endoxifen as a Hormonal Therapy for Breast Cancer
Study identification
- NCT ID
- NCT01327781
- Recruitment status
- Active, not recruiting
- Study type
- Interventional
- Phase
- Phase 1
- Lead sponsor
- National Cancer Institute (NCI)
- NIH
- Enrollment
- 62 participants
Conditions and interventions
Conditions
Interventions
- Endoxifen Hydrochloride Drug
- Laboratory Biomarker Analysis Other
- Pharmacological Study Other
- Questionnaire Administration Other
Drug · Other
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- Female
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Mar 24, 2011
- Primary completion
- Mar 4, 2017
- Completion
- Oct 29, 2026
- Last update posted
- Apr 12, 2026
2011 – 2026
United States locations
- U.S. sites
- 3
- U.S. states
- 3
- U.S. cities
- 3
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Mayo Clinic in Arizona | Scottsdale | Arizona | 85259 | — |
| Mayo Clinic in Florida | Jacksonville | Florida | 32224-9980 | — |
| Mayo Clinic in Rochester | Rochester | Minnesota | 55905 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01327781, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 12, 2026 · Synced May 19, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01327781 live on ClinicalTrials.gov.