RecruitingPhase 2Drug trialSystemic Chemotherapy With FOLFOX Plus Atezolizumab & Bevacizumab for Patients With Advanced HCC Who Previously Received Atezolizumab & BevacizumabAtezolizumab plus bevacizumab is the first-line treatment for advanced hepatocellular carcinoma (HCC). However, the effect of the second-line treatment after the progress of Atezolizumab plus bevacizumab therapy remains unsatisfactory. This is a prospective trial to investigate the efficacy and safety of systemic chemotherapy with FOLFOX plus Atezolizumab \& bevacizumab as second-line treatment for patients with advanced HCC who previously received atezolizumab plus bevacizumab