Biomarker analysis of neoadjuvant Doxorubicin/Cyclophosphamide followed by Ixabepilone or Paclitaxel in early-stage breast cancer
A randomized, open-label, multicenter, phase II trial (NCT00455533) enrolled previously untreated women with histologically-confirmed primary invasive breast adenocarcinoma (T2–3, N0–3, M0, tumor size ≥2.0 cm), regardless of hormone receptor or HER2 expression status. Patients received sequential neoadjuvant therapy starting with 4 cycles of AC (doxorubicin 60 mg/m2 intravenously and cyclophosphamide 600 mg/m2 intravenously) given every 3 weeks, followed by 1:1 randomization to either ixabepilone (40 mg/m2 3-hour infusion) every 3 weeks for 4 cycles, or paclitaxel (80 mg/m2 1-hour infusion) weekly for 12 weeks. Fresh tumor biopsies at screening were a mandatory prerequisite for study entry for biomarker analyses. Gene expression profiling was performed by Affymetrix GeneChip to determine if pre-specified gene models could distinguish between the clinical activity of two microtubule stabilizing agents, ixabepilone and paclitaxel.
Cancer Type: Breast Cancer
GPL: 571
Number of Genes with Data: 978
Number Observations: 279
Number Outputs: 3
Imbalanced Ratio: 0.101449275
Default Task: Classification