Assess Efficacy and Safety of Durvalumab Alone or Combined With Bevacizumab in High Risk of Recurrence HCC Patients After Curative Treatment

Inclusion Criteria:

* Histologically or cytologically (or radiologically for patients undergoing curative ablation), newly diagnosed, confirmed HCC and successfully completed curative therapy (resection or ablation)
* Imaging to confirm disease-free status within 28 days prior to randomization
* ECOG 0-1 at enrolment
* Child-Pugh score of 5 or 6
* Adequate organ and marrow function.

Exclusion Criteria:

* Known fibrolamellar HCC, sarcomatoid HCC or mixed cholangiocarcinoma and HCC
* Evidence of metastasis, macrovascular invasion or co-existing malignant disease on baseline imaging
* History of hepatic encephalopathy within 12 months prior to randomization
* Evidence, by Investigator assessment, of varices at risk of bleeding on upper endoscopy or contrast-enhanced cross-sectional imaging
* Patients with Vp1 to Vp4 portal vein thrombosis on baseline imaging are excluded
* Active co-infection with HBV and HDV.
* Receipt of prior systemic anticancer therapy for HCC
* Those on a waiting list for liver transplantation