Patent No. EP3611193 (titled "Binding Molecules For Bcma And Cd3") was filed by Amgen on Nov 15, 2012. The application was issued on Aug 26, 2026.
The invention provides an at least bispecific binding molecule for treating or ameliorating multiple myeloma. The molecule comprises two antibody binding domains: a first domain specifically binding to BCMA epitope cluster 3 (amino acid residues 24–41 of SEQ ID NO: 1002; sequence CQLRCSSNTPPLTCQRYC) and a second domain specifically binding to the CD3$\epsilon$ chain of the T cell CD3 receptor complex. This receptor complex, consisting of CD3$\gamma$, CD3$\delta$, and two CD3$\epsilon$ chains, associates with the T cell receptor (TCR) and $\zeta$ chain to generate activation signals in cytotoxic T lymphocytes. The molecule may further include additional functions, such as an Fc constant domain for mediating antibody-dependent cellular cytotoxicity, labels, or therapeutic agents, potentially forming a tri- or multifunctional binding molecule.

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