anti-HER2 antibody-drug conjugate ARX788

An antibody-drug conjugate (ADC) composed of a monoclonal antibody targeting human epidermal growth factor receptor 2 (EGFR2; HER2) site-specifically conjugated, via the non-natural amino acid linker para-acetyl-phenylalanine (pAcF), to the auristatin analog and potent microtubule inhibitor monomethyl auristatin F (MMAF), with potential antineoplastic activity. Upon administration of anti-HER2 ADC ARX788, the antibody moiety targets and binds to HER2 on tumor cells. Upon antibody/antigen binding and internalization, MMAF binds to and inhibits tubulin polymerization, which results in G2/M phase arrest and tumor cell apoptosis. HER2, a tyrosine kinase receptor, is overexpressed by many cancer cell types. The site-specific conjugation of the cytotoxic agent to the antibody improves the biophysical properties of ARX788, increases payload stability and optimizes its efficacy. Check for active clinical trials using this agent. (NCI Thesaurus)

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