The ALTER-G-001 phase II study enrolled adult patients with GI cancer and unresectable liver metastasis, divided into Cohort A (stage IV CRC) and Cohort C (other GI cancers). Patients received anlotinib plus CAPEOX (Cohort A) or SOC chemotherapy (Cohort C), with resectability assessed after six cycles. Eligible patients underwent surgery, while others received maintenance therapy until progression or toxicity. The primary endpoint was ORR, with secondary endpoints including PFS, OS, DCR, DoR, and conversion rate of liver metastasis. Statistical analysis was based on historical ORR data and ITT principle.