Target intelligence / Profile preview

Hepatitis B virus antigen-positive tumor cell

Molecular classification
Tumor cell, Virus-infected cell, Antigen-presenting cell (indirectly)
01

Overview

A hepatitis B virus antigen-positive tumor cell is a malignant cell, typically found in the liver (HCC or ICC), that expresses hepatitis B virus antigens, particularly HBsAg, on its surface or within its cytoplasm. These cells are associated with chronic HBV infection and HBV-related cancers. They contribute to oncogenesis and immune evasion and can be targeted by immunotherapies like engineered TCR-T cells.

Other names
HBsAg-positive tumor cellHBV antigen expressing tumor cellHBV-related tumor cell
02

Mechanism of action

Tumor cell killing via engineered T-cells targeting HBV-derived peptides (e.g., S20); Viral suppression (Entecavir, Tenofovir)

03

Biological functions

Antigen presentationImmune evasionCell proliferation (cancer)Oncogenesis
04

Disease associations

Hepatocellular carcinoma (HCC)Intrahepatic cholangiocarcinoma (ICC)Chronic Hepatitis B infectionHBV-related malignancyDiffuse large B-cell lymphoma (in some cases)
05

Safety considerations

Immune-related adverse events (TCR-T therapy)Risk of viral reactivation
06

Interacting drugs

SCG101 (TCR-T therapy)

2 more in the full profile.

07

Biomarkers

HBsAg expression (tumor tissue)HLA-A2 positivity (for S20-targeted therapies)

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