| Inclusion Criteria: | 1) Age >/= 18 years old.
2) Patients with metastatic CRC. Confirmation of CRC diagnosis by histological or cytological specimen from the original resection of primary tumor.
3) Patients must have obtainable tumor tissue for biomarker analysis; only the original surgical resection is acceptable. Tumor tissue must be identified and reviewed to make certain that there is adequate tumor tissue available for biomarker evaluations, but actual procurement is not mandatory prior to study entry.
4) Patients with radiologically documented progressive disease by RECIST criteria during prior treatment or within 6 months of their most recent dose of chemotherapeutic regimens containing a fluoropyrimidine or oxaliplatin or irinotecan or targeted agent. Patients must have previously received anti-EGFR antibody (if appropriate, cetuximab or panitumumab), bevacizumab, fluoropyrimidine, oxaliplatin and irinotecan-based treatments. Patients with EGFR-negative tumors do not need to have previously received anti-EGFR antibody therapy.
5) Patients with at least one measurable lesion(s) by the RECIST criteria as determined by Computer Tomography (CT) Scan, Magnetic Resonance Imaging (MRI), or physical examination.
6) Adequate bone marrow function as shown by: ANC >/= 1.5 x 10^9/L, Platelets >/= 100 x 10^9/L, Hb >9 g/dL.
7) Adequate liver function: serum bilirubin </= 1.5 x ULN, ALT and AST </= 2.5x ULN; patients with known liver metastases, AST and ALT </= 5x ULN.
8) Adequate renal function: serum creatinine </= 2 x ULN or 24-hour creatinine clearance >/= 50cc/24 hour.
9) Patients with a life expectancy >/= 3 months.
10) Patients with a WHO performance status of 0, 1, or 2.
11) Women of childbearing potential must have had a negative serum pregnancy test 72 hours prior to the administration of the first study treatment.
12) Patients who give a written informed consent obtained according to local guidelines. |