New drug Z-Endoxifen shows promise in early breast cancer trial
NCT ID NCT01327781
First seen Nov 14, 2025 · Last updated May 13, 2026 · Updated 21 times
Summary
This early-phase trial tested a drug called Z-endoxifen in 62 women with estrogen receptor-positive (ER+) breast cancer that had spread or come back. The main goal was to find the safest dose and understand side effects. Z-endoxifen works by blocking estrogen, which can fuel breast cancer growth.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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Mayo Clinic in Arizona
Scottsdale, Arizona, 85259, United States
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Mayo Clinic in Florida
Jacksonville, Florida, 32224-9980, United States
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Mayo Clinic in Rochester
Rochester, Minnesota, 55905, United States
Conditions
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