Several options are available today in the treatment of advanced colorectal cancer: traditional chemotherapeutic regimens, targeted therapies, and their combinations. Panitumumab is a new, fully human anti-EGFR monoclonal antibody, what is well-tolerated, effective as a single agent in chemotherapy refractory patients and in different combinations. The clinical response is restricted to tumors with wild-type RAS, therefore the RAS status should be checked before treatment.