Liver cancer is a major health problem, being the second leading cause of cancer-related death worldwide, 1 with an annual incidence of more than 850,000 new cases globally. 2 Hepatocellular carcinoma (HCC) represents 85% to 90% of all primary liver cancers and occurs mainly in the setting of chronic inflammatory liver diseases. 2 Only 40% to 50% of patients with HCC are diagnosed at early stages (Barcelona Clinic Liver Cancer [BCLC] 0-A) amenable to potentially curative approaches. 2 However, up to 70% of patients present with disease recurrence within 5 years, 2 and no adjuvant therapies to prevent this complication are available to date. Patients diagnosed at an intermediate stage (BCLC B) are treated with transarterial chemoembolization, 2,3 whereas 40% Abbreviations: AE, adverse event; AFP, α-fetoprotein; BCLC, Barcelona Clinic Liver Cancer; CCR4, chemokine receptor 4; CI, confidence interval; CTLA-4, cytotoxic T lymphocyte-associated antigen 4; DLTs, dose limiting toxicity; ECOG PS, Eastern Cooperative Oncology Group performance status; EHS, extrahepatic spread; FDA, US Food and Drug Administration; FGFR, fibroblast growth factor receptor; FGFR4, fibroblast growth factor receptor 4; HCC, hepatocellular carcinoma; HCV, hepatitis C virus; HR, hazard ratio; Hsp90, heat shock protein 90; IDO1, indolamine2,3-dioxygenase 1; IHC, immunohistochemistry; mRECIST, modified response evaluation criteria in solid tumors; MTD, maximum tolerated dose; ORR, objective response rate; OS, overall survival; PD-1, programmed death-1; PDGFR, platelet-derived growth factor receptor; PDGFRB, platelet-derived growth factor receptor β; PD-L1, programmed death ligand 1; RP2D, recommended phase II dose; TGF-βR1, transforming growth factor-β receptor 1; VEGFA, vascular endothelial growth factor A; VEGFR, vascular endothelial growth factor receptor; VEGFR2, vascular endothelial growth factor receptor 2; VEGFR3, vascular endothelial growth factor receptor 3.
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