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Treatment rationale and study design for a randomized, double-blind, placebo-controlled phase II study evaluating onartuzumab (MetMAb) in combination with bevacizumab plus mFOLFOX-6 in patients with previously untreated metastatic colorectal cancer.

Author(s): Bendell JC(1), Ervin TJ, Gallinson D, Singh J, Wallace JA, Saleh MN, Vallone M, Phan SC, Hack SP.

Affiliation(s): Author information: (1)Sarah Cannon Research Institute, Nashville, TN, USA. jbendell@tnonc.com

Publication date & source: 2013, Clin Colorectal Cancer. , 12(3):218-22

BACKGROUND: Dysregulation of the hepatocyte growth factor (HGF)/MET pathway is associated with poor prognosis, more aggressive biological characteristics of the tumor, and shortened survival in patients with metastatic colorectal cancer (mCRC). Onartuzumab (MetMAb) is a recombinant humanized monovalent monoclonal antibody directed against MET. We present the treatment rationale and protocol for an ongoing randomized multicenter placebo-controlled phase II study designed to evaluate the efficacy and safety of MetMAb combined with bevacizumab and mFOLFOX-6 (5-fluoruracil, leucovorin, and oxaliplatin). PATIENTS AND METHODS: Eligible patients with previously untreated mCRC are randomized 1:1 to either mFOLFOX-6 combined with bevacizumab and placebo followed by 5-fluorouracil/leucovorin plus bevacizumab and placebo or mFOLFOX6, bevacizumab plus MetMAb followed by 5 FU/LV, bevacizumab, and MetMAb. The primary end point of this study is progression-free survival (PFS) in the intent-to-treat (ITT) population. Secondary end points include overall survival (OS), objective response rate, and safety. Subanalyses will be performed to evaluate the effect of MET receptor expression on study primary and secondary end points. Correlative studies will be performed on tissue- and blood-derived biomarkers related to both HGF/MET signaling and other associated pathway markers.

Page last updated: 2014-11-30

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