“…The addition of targeted agents to standard chemotherapy has the potential to significantly improve response rates and survival outcomes (Arnold, Siewczynski, & Schmoll, 2006;Cunningham et al, 2004;Giantonio et al, 2007;Hurwitz et al, 2004Hurwitz et al, , 2005Kabbinavar, Hambleton, et al, 2005, Kabbinavar, Schulz, et al, 2005Saltz et al, 2007). Studies have demonstrated that the status of the K-ras gene in the tumor is predictive of outcomes with anti-epidermal growth factor receptor (EGFR) therapies.…”