The efficacy and safety of AK104 as adjuvant therapy in hepatocellular carcinoma of high recurrence risk after curative resection.

Inclusion Criteria:

1. Pathological diagnosis of HCC without any metastasis;
2. Receiving radical resection as the only anti-tumor treatment;
3. No evidence of residual cancer found during or after the operation;
4. Presence of any high risk factor of postoperative recurrence;
5. Child-Pugh grade: A;
6. ECOG score: 0;
7. Controlled underlying causes of HCC.

Exclusion Criteria:

1. Fibrolamellar hepatocellular carcinoma, sarcoma-like hepatocellular carcinoma, cholangiocarcinoma, etc;
2. Any anti-tumor treatment other than radical surgery before randomization;
3. Precarious liver function indicated by severe complications;
4. Recent procedures or medications leading to high risk of bleeding;
5. Poorly controlled or symptomatic hypertension, congestive heart failure, arrhythmia, etc;
6. Failure of performing enhanced CT or MRI scans of the liver;
7. Recent severe infections or systemic antibiotics use;
8. Active autoimmune diseases;
9. History of other incurable malignant tumors;
10. History of transplantation;
11. Pregnancy.