A Translational Study of Bevacizumab in Participants With Metastatic Colorectal Cancer

Participants will receive oxaliplatin 85 milligrams per square meter (mg/m\^2) IV infusion on Day 1 of every 2 weeks cycle during alternative Phase A treatment or 130 mg/m\^2 on Day 1 of every 3 weeks cycle during Phase A treatment.

Participants will receive capecitabine 1000 mg/m\^2 per oral (PO) twice daily on Days 1-14 of 3 weeks cycle during Phase A treatment.

Participants will receive 7.5 mg/kg IV infusion on Day 1 every 3 weeks (Phase A treatment) or 5 mg/kg IV on Day 1 every 2 weeks (Alternative Phase A treatment and Phase B).

Participants will receive leucovorin 400 mg/m\^2 IV on Day 1 every 2 weeks (Alternative Phase A treatment and Phase B). Investigators may elect to chose low dose of leucovorin (either 20 mg/m\^2 or 50 mg total dose).

Participants will receive 5-fluouracil loading dose of 400 mg/m\^2 IV on Day 1 followed by 2400 mg/m\^2 continuous IV infusion over 46 hours Day 1 (Alternative Phase A treatment and Phase B).

Participants will receive irinotecan 180 mg/m\^2 IV on Day 1 every 2 weeks during Phase B treatment.