[Multi-Line Chemotherapy for Metastatic Colorectal Cancer].

We administered multi-line chemotherapy(ie, more than fifth-line chemotherapy)to 5 patients with metastatic colorectal cancer(age range, 62to 78 years; median age, 68years). Four of the five patients died because of cancer progression; however, the mean overall survival(OS)was 39 months. In our experience, re-challenging with key drugs was associated with clinical benefits. A case that could be thrown until ninth-line treatment was also experienced. A strategy based on rechallenging and changes in the combination of key drugs[5-FU-based chemotherapy, oxaliplatin, irinotecan(CPT-11), bevacizumab(Bmab)and panitumumab(Pmab)]may prolong life and offer new hope for these patients.