Study Information

Alliance Study ID: CALGB-40903

NCT Study ID (ClinicalTrials.gov): NCT01439711

Alliance Committee: Breast Cancer

Disease or Cancer Type: Breast Cancer

Alliance Study Chair: Shelley Hwang, MD, MPH

Status: COMPLETED


Study Description

RATIONALE: Estrogen can cause the growth of breast cancer cells. Hormone therapy using letrozole may fight breast cancer by blocking the use of estrogen by the tumor cells or by lowering the amount of estrogen the body makes.

PURPOSE: This phase II trial is studying how well letrozole works in treating women with ductal carcinoma in situ.

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