Gene Expression Analysis of Patients With Metastatic Colorectal Cancer Receiving Oxaliplatin Based Chemotherapy Regimen

1.1 To collect pathological tumor specimens of patients with metastatic colorectal cancer in a prospective fashion for correlative studies of response to an oxaliplatin based chemotherapy regimen. 1.2 To determine a gene expression profile that predicts response to an oxaliplatin based chemotherapy regimen in this cohort of patients.