2. Histologically and/or cytologically confirmed and radiographically measurable KRAS wild-type adenocarcinoma of the colon or rectum that is metastatic and/ or unresectable. Subjects must have been treated with a fluoropyrimidine (e.g., 5-fluorouracil or capecitabine), oxaliplatin, irinotecan and bevacizumab or have contraindication to such treatment. In addition, for the monotherapy MET Amplified cohort, must have received prior treatment with anti-EGFR therapy (either panitumumab or cetuximab).