The aim of this phase II study is to evaluate the efficacy of the combination XELIRI/AVASTIN in patients with mCRC, who have progressed in first line treatment with FOLFOX/AVASTIN. For AVASTIN was selected the dosing schedule of the trials TREE 1 and 2 \[17\], where Avastin was combined with capecitabine and oxaliplatin in a three weeks schedule and with adaptation of the dose in the 7,5 mg/kg