A Study of Vismodegib (GDC-0449, Hedgehog Pathway Inhibitor) With Concurrent Chemotherapy and Bevacizumab As First-Line Therapy for Metastatic Colorectal Cancer

Vismodegib 150 mg was provided in hard gelatin capsules in 3 different strengths, 25 mg, 125 mg, and 150 mg.

Placebo to vismodegib consisted of the excipients for vismodegib without the active molecule in hard gelatin capsules matching the active drug product in color and size.

Bevacizumab 5 mg/kg was administered intravenously (IV) over 90 minutes for the first infusion, shortening to 60 and 30 minutes for subsequent infusions.

Following administration of bevacizumab, patients received oxaliplatin 85 mg/m\^2 IV administered over 90 minutes concurrently with folinic acid 400 mg/m\^2 (d,I-racemic form, or 200 mg/m\^2 I-isomer form) IV administered over 120 minutes, then fluorouracil 400 mg/m\^2 administered as an IV bolus, then 2400 mg/m\^2 administered as a continuous IV infusion over 46 hours.

Following administration of bevacizumab, patients received irinotecan 180 mg/m\^2 IV administered over 90 minutes concurrently with folinic acid 400 mg/m\^2 (d,I-racemic form, or 200 mg/m\^2 I-isomer form) administered IV over 120 minutes, then fluorouracil 400 mg/m\^2 administered as an IV bolus, then fluorouracil 2400 mg/m\^2 administered as a continuous IV infusion over 46 hours.