Background: Hepatocellular carcinoma (HCC) is a highly aggressive liver cancer (LC), primarily driven by chronic hepatitis B virus (HBV) infection. Persistent HBV infection causes liver inflammation, dysfunction, and ultimately HCC through mechanisms like viral integration, oncogenic protein expression, and immune disruption. This study explores HBV-related HCC mechanisms and evaluates preventive/therapeutic approaches to reduce the global HCC burden.
Methods: To conduct this comprehensive review, we systematically searched the databases of PubMed, Scopus, Web of Science, and Google Scholar for relevant literature. The search included studies published without a time restriction up to 2025, covering clinical studies, review articles, systematic reviews, and meta-analyses. The following keywords were used to identify pertinent publications: "HBV", "HCC", "Pathogenesis", "Immune response", "LC", "Diagnosis ", "Prevention", and "Treatment".
Results: HBV contributes to HCC through multiple mechanisms, including viral genome integration into the host, oncogenic viral protein expression, genetic mutations, induction of cellular proliferation, inhibition of apoptosis, immune system disruption, and alterations in cellular signaling pathways. Antiviral therapies targeting HBV have shown promise in reducing HCC risk by suppressing viral replication and mitigating liver damage. Early intervention in CHB patients significantly decreases HCC incidence, highlighting the importance of timely diagnosis and treatment.
Conclusion: The strong link between HBV and HCC underscores the need for effective antiviral strategies to prevent and manage HCC. Understanding the molecular mechanisms of HBV-induced hepatocarcinogenesis is crucial for developing targeted therapies. Preventive measures, including vaccination and early antiviral treatment, are essential in reducing the global HCC burden.