Safety and Effectiveness Study of Chemotherapy and Ziv-aflibercept to Treat Metastatic Colorectal Cancer

400 mg/m2 IV bolus day 1 followed by 2400 mg/m2 continuous IV infusion over 46 hours (days 1 and 2) every 14 days until disease progression

400 mg/m2 IV day 1 every 14 days until disease progression

4 mg/kg IV day 1 every 14 days for 6 cycles (induction regimen); 4 mg/kg IV day 1 every 14 days until disease progression (continuation regimen)

5-FU 400 mg/m2 IV bolus plus leucovorin 400 mg/m2 IV plus oxaliplatin 85 mg/m2 IV on day 1 followed by 5-FU 2400 mg/m2 continuous IV infusion over 46 hours (days 1 and 2) every 14 days