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Lapatinib Ditosylate in Treating Patients With Ductal Breast Carcinoma In Situ

Ductal Breast Carcinoma In Situ Clinical Trial

Official title:
Neoadjuvant Trial of Lapatinib for the Treatment of Women With DCIS Breast Cancer

Clinical Trial Summary

This randomized phase I/II trial studies the side effects and best dose of lapatinib ditosylate and to see how well it works in treating patients with ductal breast carcinoma in situ. Lapatinib ditosylate may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Clinical Trial Description

PRIMARY OBJECTIVES:

I. Determine whether lapatinib (lapatinib ditosylate) therapy at the dose of 1000 mg results in a statistically significantly lower rate of proliferation in ductal carcinoma in situ (DCIS) breast cancer cells as measured by Ki67 when compared to placebo.

II. Determine the toxicity profile and frequency of adverse events in women with DCIS breast cancer taking lapatinib at 1000 mg as compared to women taking placebo.

SECONDARY OBJECTIVES:

I. Determine whether lapatinib treatment affects the incidence of DCIS seen at the time of surgical excision.

II. Determine whether treatment with lapatinib will modulate breast tissue histology or the expression of specific biomarkers in normal and DCIS breast cancer cells.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I: Patients receive lapatinib ditosylate orally (PO) once daily (QD) for 2-6 weeks until the time of surgery.

ARM II: Patients receive placebo PO QD for 2-6 weeks until the time of surgery.

After completion of study treatment, patients are followed for 4-5 weeks. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00555152
Study type Interventional
Source National Cancer Institute (NCI)
Contact
Status Completed
Phase N/A
Start date August 19, 2009
Completion date August 28, 2014
View Details
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