Comparing Efficacy and Safety of Stivant (AryoGen Bevacizumab) Versus Avastin in Metastatic Colorectal Cancer

Bevacizumab 5 mg/kg will be administered at day 1 every 2 weeks. Initially, it will be administered as a 90-min infusion. If the first infusion is well tolerated, the second will be delivered as a 60-min infusion, and if the 60-min infusion is well tolerated, all subsequent infusions will be given over 30 minutes. FOLFIRI-3 regimen consists of irinotecan 100 mg/m2 over 1 hour at day 1, leucovorin 400 mg/m2 at day 1 followed by a 46 hour 5-FU continuous infusion (2000 mg/m2) and irinotecan 100 mg/m2 over 1 hour on day 3 will administer. Induction treatment was administrated every 2 weeks until disease progression, unacceptable toxicities, surgical intervention, or withdrawal of consent.