Phase II Trial of Combination Therapy With Irinotecan, S-1, and Bevacizumab (IRIS/Bev) in Patients With Unresectable or Recurrent Colorectal Cancer

"S-1 is administered orally on days 1 to 14 of a 28-day cycle. Patients are assigned on the basis of body surface area (BSA) to receive one of the following oral doses twice daily: 40 mg (BSA \<1.25m2), 50 mg (BSA \>1.25 to \<1.50 m2), or 60 mg (BSA \>1.50 m2).~Irinotecan 100 mg/m2 is administered by intravenous infusion on days 1 and 15. Bevacizumab 5 mg/kg (body weight)is administered by intravenous infusion on days 1 and 15."