Usefulness of TAS-102 as Third-line Chemotherapy for Metastatic Colorectal Cancer

The feasibility and oncological outcomes of treatment with TAS-102, that is recommended as third-line chemotherapy for patients with metastatic colorectal cancer (mCRC), remain unknown. Between 2013 and 2015, seven patients (five males, two females) with mCRC who were administered TAS-102 as third-line chemotherapy at our Institution were retrospectively studied. During the same period, seven patients with mCRC with Kirsten rat sarcoma viral oncogene homolog (KRAS) wild-type primary lesions who were administered irinotecan with panitumumab comprised the control group. The duration of third-line chemotherapy in the TAS-102 group was 217.0 (range=136-337) days compared to 226.9 (range=122-335) days in the control group, with no significant difference in the duration of administration between the two groups. No significant difference in overall survival was identified between the two groups No serious adverse effects were encountered in either group. TAS-102 may be suitable as third-line chemotherapy for patients with mCRC.