A Study Comparing the Efficacy and Safety of Vanucizumab and FOLFOX With Bevacizumab and FOLFOX in Participants With Untreated Metastatic Colorectal Cancer

Study Summary

This is a Phase 2 multicenter, randomized, parallel arms, double-blind study of vanucizumab to evaluate the efficacy and safety of vanucizumab in combination with oxaliplatin, folinic acid, and 5-fluorouracil (5-FU) (mFOLFOX-6) versus bevacizumab (Avastin) + mFOLFOX-6 in participants with previously untreated metastatic colorectal cancer (mCRC). The study consists of 2 parts: a safety run-in open-label, single-arm part (Part 1) and a randomized, parallel-arms, double-blind part (Part 2). During Part 1 at least 6 eligible participants will receive 2000 milligrams (mg) vanucizumab every 2 weeks + mFOLFOX-6 in order to confirm the dose and schedule that will be used in Part 2. In Part 2, all eligible participants will be randomized in a ratio of 1:1 to receive either mFOLFOX-6 + vanucizumab or mFOLFOX-6 + bevacizumab. Study treatment (induction and maintenance) will be given on Day 1 of each 14-day cycle. Induction therapy will consist of up to 8 cycles of mFOLFOX-6 plus either bevacizumab or vanucizumab. Maintenance therapy will consist of 5-fluorouracil and folinic acid plus either vanucizumab or bevacizumab for up to 24 months or until disease progression, unacceptable toxicity, Investigator decision or consent withdrawal, whichever occurs first.

Primary Outcome

Efficacy of vanucizumab was evaluated in terms of PFS as Investigator-Assessed Using Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1). PFS was defined as the time between randomization and the date of first documented disease progression or death from any cause on study, whichever occurred first. Death on study was defined as death from any cause within 30 days of the last study treatment.

Interventions

• DRUG Bevacizumab
• DRUG Oxaliplatin
• DRUG 5-FU
• DRUG Folinic acid
• DRUG Vanucizumab