Fruquintinib Combined With Tislelizumab and HAIC in Patients With Advanced Colorectal Liver Metastases Cancer Who Failed Standard Therapy

Inclusion Criteria: 1. Informed consent has been signed 2. Histologically or cytologically confirmed unresectable advanced colorectal liver metastases cancer 3. Age ≥ 18 years, ≤75 years 4. ECOG PS：0-1 5. Expected overall survival ≥3 months 6. Patients must have at least one measurable liver metastases (RECIST 1.1) 7. Patients who have previously failed standard treatment, or who cannot tolerate standard treatment 8. Patients must have adequate organ and bone marrow function 9. Women of childbearing age must have a negative pregnancy test within the first day of the study, and contraceptive methods should be taken during the study until 6 months after the last administration Exclusion Criteria: 1. Patients who are allergic or suspected to be allergic to the study drug or similar drugs 2. Patients had other malignant tumors in the past 5 years or at the same time (except for the cured skin basal cell carcinoma and cervical carcinoma in situ); 3. Participating in other clinical trials and received at least one treatment within 4 weeks before enrollment 4. Patients with autoimmune disease or history of autoimmune disease within 4 weeks before enrollment 5. patients currently have central nervous system (CNS) metastasis or previous brain metastasis and the symptom control time is less than 2 months 6. Patients cannot take fruquintinib orally 7. Patients who have received organ transplantation and bone marrow transplantation in the past 8. Have taken other strong inducers or inhibitors of CYP3A4, P-gp substrates and BCRP substrates within 2 weeks before the First medication 9. Received any operation (except biopsy) or invasive treatment or operation (except venous catheterization, puncture and drainage, etc.) within 4 weeks before enrollment 10. Pleural effusion or ascites causing relevant clinical symptoms, including respiratory syndrome (dyspnea≥CTC AE grade 2) 11. Clinically significant electrolyte abnormality； 12. Systolic blood pressure \> 140mmHg or diastolic blood pressure \> 90mmHg regardless of any antihypertensive drugs; Or patients need more than two antihypertensive drugs 13. Proteinuria ≥ 2+ (1.0g/24hr); 14. Active gastric and duodenal ulcer, ulcerative colitis or uncontrolled hemorrhage in GI, or other conditions that may cause GI bleeding and perforation as determined by the investigator; 15. Have evidence or history of bleeding tendency within 3 months or thromboembolic events within 12 months before enrollment 16. Clinically significant cardiovascular disease, including but not limited to acute myocardial infarction, severe/unstable angina pectoris or coronary artery bypass grafting within 6 months before enrollment; NYHA classification \> 2 Grade; ventricular arrhythmia requiring medical therapy; ECG showing QTc interval ≥ 480 ms 17. Active or uncontrolled serious infection (≥CTCAE grade 2 infection) 18. Pregnant or lactating women 19. Any other disease, with clinically significant metabolic abnormalities, physical examination abnormalities or laboratory abnormalities, according to the judgment of investigator that the patient is not suitable for the the study drug (such as having epileptic seizures and require treatment), or would affect the interpretation of study results, or put patients at high risk 20. Clinical uncontrolled active infections, including human immunodeficiency virus (HIV) infection, active hepatitis B / C (HBV DNA Positive\[1×104 copies/mL or \>2000 IU/ml\], HCV RNA positive\[\>1×103 copies/mL\]); 21. Patients have other factors that may affect the results of the study or cause the study to be terminated halfway, such as alcoholism, drug abuse, other serious diseases (including mental diseases) that require concomitant treatment, and serious laboratory abnormalities. Accompanied by family or social factors, which will affect the safety of patients.