New study explores letrozole's effects on breast cancer before surgery

NCT ID NCT04568616

First seen Jan 20, 2026 · Last updated Jun 05, 2026 · Updated 21 times

Summary

This study tests the drug letrozole in postmenopausal women with early-stage ER+ breast cancer. Participants take letrozole for 4 to 24 weeks before surgery to see how the tumor changes and to check if they take the medication as prescribed. The goal is to improve treatment for this type of breast cancer.

Disclaimer Read more

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.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for BREAST CANCER are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Contacts and locations

Locations

  • Dartmouth Hitchcock Medical Center

    Lebanon, New Hampshire, 03756, United States

  • Dartmouth-Hitchcock Medical Center

    Lebanon, New Hampshire, 03756, United States

Conditions

Explore the condition pages connected to this study.