Study to Compare CAPTEM vs FOLFIRI as Second Line Treatment in Advanced, Colorectal Cancer Patients

Patients in Arm A will receive capecitabine at the oral dose of 1500 mg/mq/die refracted in two daily doses from day 1 to day 14 every 28 days

Patients in Arm A will receive temozolomide 150 mg/mq/die refracted in two daily doses starting on day 10 to 14 every 28 days.

Patients in Arm B will receive FOLFIRI chemotherapy starting Day 1 q2w (every cycle) starting on Day 1 of Cycle 1. FOLFIRI consists of irinotecan (starting dose of 180 mg/m2) on day one only; 5-FU (starting bolus and 22-hour infusional doses of 400 mg/m2 and 600 mg/m2, respectively), and leucovorin (racemic, starting dose of 200 mg/m2 or L-form, starting dose of 100 mg/m2) for two consecutive days.

Patients in Arm B will receive FOLFIRI chemotherapy starting Day 1 q2w (every cycle) starting on Day 1 of Cycle 1. FOLFIRI consists of irinotecan (starting dose of 180 mg/m2) on day one only; 5-FU (starting bolus and 22-hour infusional doses of 400 mg/m2 and 600 mg/m2, respectively), and leucovorin (racemic, starting dose of 200 mg/m2 or L-form, starting dose of 100 mg/m2) for two consecutive days.

Patients in Arm B will receive FOLFIRI chemotherapy starting Day 1 q2w (every cycle) starting on Day 1 of Cycle 1. FOLFIRI consists of irinotecan (starting dose of 180 mg/m2) on day one only; 5-FU (starting bolus and 22-hour infusional doses of 400 mg/m2 and 600 mg/m2, respectively), and leucovorin (racemic, starting dose of 200 mg/m2 or L-form, starting dose of 100 mg/m2) for two consecutive days.