Aim: This study compared the efficacy and safety of Bmab+oral 5-Fluorourasil (Bmab+o-5-FU) including Bmab+Capecitabine (Cape) with that of intensive chemotherapy including L-OHP or CPT-11 for patients with metastatic colorectal cancer (mCRC).Methods: Between January 2006 and February 2017, 40 elderly (?70 years) chemotherapy-naive patients with mCRC (male/female=22/18; median age, 76.0 years) were retrospectively reviewed. The treatment regimens were Bmab+o-5-FU (n=19)and intensive regimens (n=21). Intensive regimens comprised 17 L-OHP and 4 CPT-11 doublet chemotherapies.Results: The median progression-free survival (PFS) with Bmab+o-5-FU and intensive regimens was 281 and 215 days, respectively. The median survival time with Bmab+o-5-FU and intensive regimens was 961 and 1,002 days, respectively. No significant differences were observed in the overall survival or PFS between Bmab+o-5-FU and the other regimens. The disease control rate was 94.7% with Bmab+o-5-FU and 81.0% with intensive regimens. The rate of grade ?3 hematologicaladverse events was 5.3% for Bmab+o-5-FU and 15.8% for intensive regimens.Conclusions: With its similar survival benefit to intensive regimens, high disease control rate and good feasibility, Bmab+o-5-FU seems a fine treatment choice for elderly mCRC patients
