III. Analyze various tissue biomarkers (e.g. 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.