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A 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 randomized phase III trial studies radiation therapy to see how well it works with or without trastuzumab in treating women with ductal carcinoma in situ who have undergone lumpectomy. Monoclonal antibodies, such as trastuzumab, can block tumor growth in different ways. Some block the ability of tumor cells to grow and spread. Others find tumor cells and help kill them or carry tumor-killing substances to them. Radiation therapy uses high-energy x-rays to kill tumor cells. It is not yet known whether radiation therapy is more effective with or without trastuzumab in treating ductal carcinoma in situ.

Stanford is not currently accepting new patients for this trial. You may want to check to see if other locations are recruiting.



  • biological : trastuzumab
  • other : laboratory biomarker analysis
  • radiation : whole breast irradiation

Phase: Phase 3


Ages Eligible For Study:

18 Years - N/A

Inclusion Criteria

- The patient must have consented to participate and must have signed and dated an appropriate Institutional Review Board (IRB)-approved consent form that conforms to federal and institutional guidelines for the study treatment and for the pre-entry tumor block submission for HER2 testing and B-43 correlative studies - Patients must have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 (0 = fully active, able to carry on all pre-disease performance without restriction; 1 = restricted in physically strenuous activity but ambulatory) - On histologic examination, the tumor must be ductal carcinoma in situ (DCIS) (patients with mixed DCIS and lobular carcinoma in situ [LCIS] are eligible) - The DCIS must be HER2-positive as determined by central testing - Estrogen and/or progesterone receptor status must be determined prior to randomization (patients with DCIS that is hormone receptor positive or negative are eligible) - All DCIS must have been resected by lumpectomy - The margins of the resected specimen must be histologically free of DCIS; for patients in whom pathologic examination demonstrates DCIS present at the line of resection, re-excision(s) may be performed to obtain clear margins (patients who require mastectomy are not eligible) - If axillary staging is performed, nodal staging must be pN0, pN0(i-), pN0(i+) which is defined as isolated tumor cells =< 0.2 mm, regardless of the method of detection, i.e., immunohistochemistry (IHC) or hematoxylin & eosin (H&E), pN0(mol-), or pN0(mol+); note: axillary staging is not required - The interval between the last surgery for excision of DCIS (lumpectomy or re-excision of lumpectomy margins) and randomization must be no more than 120 days

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Contact information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305
Cancer Clinical Trials Office
Not Recruiting

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