What is the current landscape of antibodies targeting membrane proteins?
As of June 2022, 162 antibodies had been approved for a wide array of diseases in the world, including cancers, immune-related diseases, infectious diseases, and hematological diseases1. Over half target membrane proteins, primarily proteins with large extracellular domains and simple transmembrane domains such as tyrosine kinase receptor proteins. Only two target complex transmembrane proteins like G-protein-coupled receptors (GPCRs)2.
What are the established and emerging membrane protein targets for antibody therapies?
Established antibody targets include transmembrane proteins EGFR, VEGFR2, FGFR2, HER2, and complex membrane proteins CCR4 and CGRPR. Monoclonal and bispecific antibodies targeting complex membrane proteins such as GPRC5D, Claudins (Claudin 6 and Claudin 18), SSTR2, and CXCR4 have shown successful results in CAR-T cell therapy at the preclinical and clinical…