FC-8 is a Phase II, multi-center randomized study of a continuation regimen of 5-FU/LV with ziv-aflibercept or 5-FU/LV alone (control arm) following the induction regimen of mFOLFOX6 and ziv-aflibercept as first-line therapy for patients with metastatic colorectal cancer. The primary aim of the study is to determine the value of adding ziv-aflibercept to the continuation regimen of 5-FU/LV in improving progression-free survival (PFS) of patients with metastatic colorectal cancer who have achieved at least stable disease after induction therapy. The secondary aim is to determine the overall objective response rate (complete, partial or stable responses) by Response Evaluation Criteria in Solid Tumors (RECIST 1.1).