The use of anti-EGFR monoclonal antibodies-EGFR blockers in the comprehensive treatment of metastatic colorectal cancer with or without the surgical removal of metastases

Abstract

Clinical data on the efficacy and safety of cetuximab and panitumumab in 87 patients in the 1-4 lines of drug therapy for metastatic colorectal cancer (mCRC) with wild-type RAS with and without surgical removal of metastases were analyzed. Anti-EGFR drugs were prescribed for patients in the first line of therapy in 64.4%, in the second line - 14.9%, in the third line - 13.8% and 6.9% - in the fourth line. 14.9% of patients continued anti-EGFR therapy after progression during 2-3 lines (with the change of cytostatics). The use of anti-EGFR drugs in treatment for mCRC was shown to provide satisfactory results of overall survival rate and progression-free survival. The most important result of the analysis is the revealed significant increase in median overall survival from 13.4±1.6 to 18.7±2.3 months (p = 0.04838) in patients who had anti-EGFR therapy and chemotherapy with surgical treatment of distant resectable metastases. Manifestations specific for anti-EGFR drugs dermal toxicity were tolerable and managed with medical correction.Of the patients who has been undergone to cytoreductive surgical interventions for resectable metastases, clinically significant complications of the surgery were observed in 17.2% ofpatients.