Efficacy of Modified Fruquintinib in Colorectal Cancer Liver Metastases: A Phase II Study

Summary

The overall 5-year survival rate for patients with colorectal liver metastases (CRLM) is still less than 20%. Surgery-based local treatment can achieve no evidence of disease (NED) in CRLM patients, but over 60% of patients experience recurrence even after achieving NED. Even with adjuvant therapy for the 6-month perioperative period after achieving NED, the recurrence rate remains high. Fruquintinib is a selective anti-angiogenic inhibitor that may help reduce tumor recurrence and prolong the time to recurrence and metastasis. The Chinese Society of Clinical Oncology (CSCO) guidelines have recommended fruquintinib as a third-line therapy for colorectal cancer. This study aims to evaluate the effectiveness and safety of fruquintinib as a maintenance therapy for patients with advanced colorectal cancer (CRC) who have achieved no evidence of disease (NED) after completing adjuvant chemotherapy.

Eligibility

Inclusion Criteria:

1. . The pathological diagnosis was colorectal adenocarcinoma liver metastasis；
2. . Age: 18 to 75 years old,allgenders；
3. . Patients who have previously received first-line chemotherapy and have achieved disease control (PR+SD) according to RECIST 1.1;
4. . Patients with liver metastasis of colorectal cancer who have undergone curative local treatment (surgery, ablation, SBRT) and achieved no evidence of disease (NED). Definition of NED: a. After local treatment, no residual signs of primary or metastatic tumors are observed on CT, MRI, PET-CT imaging, or b. No cancer cells are found in biopsies of suspicious lesions；
5. .Completed adjuvant chemotherapy after achieving NED (e.g. 4-8 cycles of CapOX regimen, 6-12 cycles of FOLFOX regimen, or without receiving adjuvant chemotherapy recently) and evaluated as no disease progression. Last chemotherapy within 2 months from enrollment.
6. . The time interval between the last chemotherapy and enrollment does not exceed 2 months;
7. . Performance status (ECOG score) ≤ 2
8. . Hematology: WBC \> 3 × 10\^9 / L; PLT \> 80 × 10\^9 / L; Hb \> 90 g/L;
9. . Liver function: ALT and AST ≤ 2.5 × ULN; bilirubin ≤ 1.5 × ULN;
10. .Renal function: Serum creatinine ≤ 1.5 × ULN or creatinine clearance rate (CCr) ≥ 60 ml/min;
11. .Signed informed consent, willingness to undergo treatment according to this protocol, and good compliance with medication.

Exclusion Criteria:

1. .Patients with tumor progression before enrollment following the completion of chemotherapy.
2. .Intestinal obstruction or incomplete intestinal obstruction.
3. .Co-existing with other serious illnesses, including severe electrolyte disorders, bleeding tendencies, etc.
4. .Active or uncontrolled severe infections: a) Known human immunodeficiency virus (HIV) infection. b) Known clinically significant liver disease history, including viral hepatitis \[known carriers of hepatitis B virus (HBV) must exclude active HBV infection, i.e., HBV DNA positive (\>1×104 copies/mL or \>2000 IU/mL)\]. c) Known hepatitis C virus (HCV) infection with positive HCV RNA (\>1×103 copies/mL), or other hepatitis, liver cirrhosis.
5. .Women who are pregnant or breastfeeding and have childbearing potential but are not taking adequate contraceptive measures.
6. .Patients with severe brain disorders or mental illnesses (such as depression, mania, obsessive-compulsive disorder, and schizophrenia) that affect the patient's ability to self-report.
7. .Patients with autoimmune diseases, blood system disorders, and a history of organ transplantation, long-term use of steroids, or immunosuppressive agents.
8. .History of other malignant tumors within the past 5 years, excluding cured cervical carcinoma in situ or basal cell carcinoma of the skin.
9. .History of organ transplantation (including autologous bone marrow transplantation and peripheral stem cell transplantation).
10. .Known or suspected allergies to the investigational drug fruquintinib.
11. .Hypertension that cannot be well controlled with antihypertensive medications (systolic blood pressure ≥150 mmHg or diastolic blood pressure ≥100 mmHg).
12. .Active cardiac disease within 6 months prior to treatment, including myocardial infarction, severe/unstable angina pectoris. Left ventricular ejection fraction \<50% on echocardiography, poorly controlled arrhythmias.
13. .Urinalysis indicating urine protein ≥2+ and 24-hour urine protein quantification \>1.0g.

Conditions4

Interventions1

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