TROP2-targeting antibody–drug conjugate composed of a humanized monoclonal antibody linked via a cleavable linker to a topoisomerase I inhibitor; binds TROP2 on tumor cells, internalizes, and releases the topo‑I payload to cause DNA damage and cell death (with potential bystander effect).
TROP2-targeting IgG1k antibody–drug conjugate that binds TROP2 on tumor cells, is internalized, and via a cleavable linker releases the topoisomerase I inhibitor tirumotecan, inhibiting topo I to cause DNA damage, replication arrest, and apoptosis, with a potential bystander effect.
NO
INDIRECT
The ADC binds TROP2 on tumor cells, is internalized, and releases a topoisomerase I inhibitor that causes DNA damage and apoptosis. Topoisomerase I is the intracellular enzymatic payload target; its expression alone is not sufficient for targeting or killing without TROP2-mediated delivery.
Nectin-4–directed antibody–drug conjugate targeting PVRL4; binds to Nectin-4 on tumor cells, is internalized, and releases a cytotoxic payload.
Nectin-4 (PVRL4)–targeted IgG1 antibody–drug conjugate. After binding Nectin-4 on tumor cells, the ADC is internalized and a cleavable linker releases a topoisomerase I inhibitor payload, blocking DNA replication and inducing cell cycle arrest and apoptosis in Nectin-4–expressing cells.
NO
INDIRECT
SHR-A2102 targets Nectin-4 on the cell surface, is internalized, and releases a topoisomerase I inhibitor that blocks DNA replication and induces apoptosis. DNA topoisomerase I is the intracellular enzyme inhibited by the payload, not the antigen that directs cell killing.
Autologous tumor-infiltrating lymphocyte (TIL) adoptive cell therapy composed of ex vivo–expanded patient CD8+/CD4+ TILs reinfused to mediate TCR-dependent recognition and cytotoxic killing of tumor antigen–bearing cells.
Autologous, ex vivo–expanded CD8+/CD4+ tumor-infiltrating T lymphocytes are reinfused to recognize tumor antigen–bearing cells via native TCRs and mediate cytotoxic killing (e.g., perforin/granzyme), leading to antitumor immune responses; product is non–genetically engineered and activity is typically supported by lymphodepletion and IL-2.
YES
DIRECT
Reinfused TILs recognize the neoantigen peptide–MHC-I via native TCRs and directly kill target cells through cytotoxic T-cell mechanisms (perforin/granzyme-mediated apoptosis, Fas–FasL).
Autologous tumor-infiltrating lymphocyte (TIL) adoptive cell therapy composed of ex vivo–expanded patient CD8+/CD4+ TILs reinfused to mediate TCR-dependent recognition and cytotoxic killing of tumor antigen–bearing cells.
Autologous, ex vivo–expanded CD8+/CD4+ tumor-infiltrating T lymphocytes are reinfused to recognize tumor antigen–bearing cells via native TCRs and mediate cytotoxic killing (e.g., perforin/granzyme), leading to antitumor immune responses; product is non–genetically engineered and activity is typically supported by lymphodepletion and IL-2.
YES
DIRECT
Autologous TILs recognize the shared tumor-associated antigen peptide presented on HLA class I via native TCRs and directly kill the presenting cells through perforin/granzyme cytolysis (and Fas–FasL apoptosis).