bivatuzumab mertansine bivatuzumab mertansine bivatuzumab mertansine is a combination of bivatuzumab, a humanized monoclonal antibody, and mertansine, a cytotoxic agent. it is designed for the treatment of squamous cell carcinoma. bivatuzumab mertansinemonoclonal antibodytypewhole antibodysourcehumanized (from mouse)targetcd44 v6clinical dataatc codenoneidentifierschemspidernone ny (what is this?) (verify)