Short course of letrozole before surgery reveals breast cancer's hormone reliance
NCT ID NCT03747042
First seen Apr 18, 2026 · Last updated May 13, 2026 · Updated 3 times
Summary
This study gave 61 postmenopausal women with early-stage, hormone-sensitive breast cancer a short course of letrozole (1–4 weeks) before their planned surgery. The goal was not to treat the cancer but to measure how much the tumor depends on hormones by checking a marker called Ki67. Researchers aimed to better understand which cancers are highly hormone-driven and which are not.
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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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Locations
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Simmons Comprehensive Cancer Center at University of Texas Southwestern Medical Center - Dallas
Dallas, Texas, 75390, United States
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