338 Emerging insights on the association of tumor molecular phenotype with clinical benefit in metastatic colorectal cancer (mCRC) subjects treated with AB928 + modified FOLFOX-6 (... by Matthew Walters, Stephen Young, Michael Cecchini, Houston Gilbert, Akshata Udyavar, Daniel DiRenzo, Sean Cho, Lisa Seitz, Kristen Zhang, Amy Anderson, Kimberline Gerrick, Olivia Gardner, Cheng Quah, Juan Jaen, William Grossman