This phase II trial is studying how well giving trastuzumab together with ixabepilone works in treating women with HER2-positive metastatic breast cancer. Monoclonal antibodies, such as trastuzumab, can locate tumor cells and either kill them or deliver tumor-killing substances to them without harming normal cells. Drugs used in chemotherapy, such as ixabepilone, work in different ways to stop tumor cells from dividing so they stop growing or die. Combining trastuzumab with ixabepilone may kill more tumor cells.
Name: laboratory biomarker analysis
Description: Per Response Evaluation Criteria in Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by computed tomography or magnetic resonance imaging scans: Complete response (CR) is defined as the disappearance of all target lesions; Partial Response is defined by at least a 30% decrease in the sum of the longest diameter of target lesions; Overall Response Rate (ORR) = CR + PR.Measure: Overall Response Rate Time: Up to 6 years
Description: Time to Treatment Failure as determined by RECIST v.1.0 Criteria: is the time from the date of randomization or start of treatment to the earliest date of progression, date of death due to any cause, or date of discontinuation due to reasons of adverse events, abnormal laboratory values, abnormal test procedure results, subject withdraws consent, or date 'Lost to follow up'.Measure: Time to Treatment Failure (TTF) Time: up to 6 years
Single Group Assignment
There is one SNP
HER2/phospho-HER2, EGFR/phospho-EGFR, IGRF-I, phospho-MAPK, phospho-P13K, bcl-2, bcl-xL, MDR-1, MRP and β-tubulin) and blood biomarkers (HER2-extracellular domain [ECD], circulating tumor cells) to correlate them with response to treatment. --- P13K ---