Phase III Clinical Trial Comparing Trastuzumab Given Concurrently with Radiation Therapy and Radiation Therapy Alone for Women with HER2-Positive Ductal Carcinoma in Situ Resected by Lumpectomy
This study is being done to compare the effects, good and/or bad, of adding the drug trastuzumab (also called Herceptin®) to breast radiation therapy. Participants in this study have been diagnosed with a very early stage of breast cancer called ductal carcinoma in situ (DCIS). DCIS is also known as intraductal or non-invasive breast cancer. DCIS means that the cancer cells are only in the milk ducts in the breast and have not spread to other breast tissue or to other parts of the body. Radiation therapy is the standard treatment for patients with DCIS.
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