Definition

A bispecific monoclonal antibody that targets two different epitopes of the human tumor-associated antigen (TAA) MET (c-MET; hepatocyte growth factor receptor; HGFR), with potential antineoplastic activity. Upon administration, MET x MET bispecific antibody REGN5093 targets and binds to two different, non-overlapping epitopes on MET expressed on the tumor cell surface, thereby forming unique REGN5093-MET complexes. The binding of REGN5093 to the MET epitopes and the unique complex formation causes MET internalization and degradation. This prevents MET-mediated signaling and inhibits growth of MET-driven tumor cells. MET, a receptor tyrosine kinase, is overexpressed on the cell surfaces of various solid tumor cell types where it is involved in epithelial-mesenchymal transition; it plays a key role in cancer cell growth, survival, angiogenesis, invasion, and metastasis.