Innovent Biologics Inc. unveiled for the first time safety and efficacy data of IBI-354, an HER2 monoclonal antibody-camptothecin derivative conjugate that shows promising efficacy signals across a range of advanced solid tumors, during the European Society of Medical Oncology (ESMO) 2024 Congress. An HER2-targeted antibody-drug conjugate developed using Innovent's topoisomerase inhibitor NT3 platform, IBI-354 combines a hydrophilic linker design with a hydrophobic payload to enhance the bystander effect, targeting adjacent antigen-low or negative tumor cells.