Irinotecan in Patients With Advanced Metastatic Breast Cancer Who Have Experienced Failure of an Anthracycline, a Taxane, and Capecitabine

Inclusion Criteria: * Women with diagnosis of primary adenocarcinoma of the breast * Presence of locally advanced or metastatic disease non-amenable to surgery or radiation therapy with curative intent * At least one measurable lesion \>20mm (or \>10 mm with spiral CT scan) * Must have received (and failed) prior treatment with an anthracycline, a taxane, and capecitabine in the adjuvant and/or advanced disease treatment setting * Women at least 18 years old, with performance status 0-2 Exclusion Criteria: * Prior treatment with another topoisomerase I inhibitor * Current enrollment in another clinical trial