Targeted Treatment Plus Tislelizumab and HAIC for Advanced CRCLM Failed from Standard Systemic Treatment

"HAIC regimen: doublet or triplet regimen based on the response and adverse events occurred in the previous standard treatment (depended on the decision of researchers)-oxaliplatin (85 mg/m2, split into d1 and d2, 0-2h,) and 5-fluorouracial (2g/m2, split into d1 and d2, 2-24h)/ oxaliplatin (65 mg/m2, 0-2h, d1), irinotecan (100 mg/m2, 0-2h, d2), and 5-fluorouracial (2g/m2, split in d1 and d2, 2-24h), repeated every 4 weeks; drug-eluting TACE will be performed at 3rd-4th cycles if the lesions in liver is abundant with blood supply.~Tislelizumab (a PD-1 inhibitor): 200 mg, intravenous drip for 30-60 minutes before 24h of HAIC, q4w.~Cetuximab (Group A, KRAS/NRAK/BRAF/EGFR wide type and interrupt cetuximab more than 3 months): 500 mg/m2, intravenous drip before HAIC, q4w.~Fruquintinib (Group B, KRAS/NRAS/BRAF/EGFR mutation type and wide type but treated with cetuximab in last 3 months): 3 mg/d, d3-23, then suspend for 1w."