New study explores how letrozole affects breast cancer tumors before surgery
NCT ID NCT04568616
First seen Jan 20, 2026 · Last updated May 15, 2026 · Updated 18 times
Summary
This study looks at how the drug letrozole works in postmenopausal women with early-stage, hormone-sensitive breast cancer before they have surgery. About 178 participants will take letrozole for 4 to 24 weeks, and researchers will compare tumor samples taken before and after treatment. The main goals are to understand changes in cancer cells and to check how well patients stick to their medication.
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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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Dartmouth Hitchcock Medical Center
Lebanon, New Hampshire, 03756, United States
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Dartmouth-Hitchcock Medical Center
Lebanon, New Hampshire, 03756, United States
Conditions
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