Development of a New BCMAxCD3 Duobody® Antibody for Multiple Myeloma (original) (raw)

Blood

Abstract

B-cell maturation antigen (BCMA) is a tumor necrosis factor (TNF) family surface protein predominantly expressed on terminally differentiated B-cells. BCMA signals through P38/NF-κB pathway upon binding to its ligands; a proliferation inducing ligand (APRIL) and B-cell activator of the TNF family (BAFF) and promote anti-apoptotic gene expression. BCMA expression is elevated in plasma blasts, plasma cells from spleen and bone marrow and correlates with disease progression in multiple myeloma (MM). BCMA expression in premalignant MM settings such as monoclonal gammopathy of undetermined significance (MGUS) and smoldering multiple myeloma (SMM) also gives an opportunity for early cancer interception. To target cancer cells expressing BCMA, we developed a BCMAxCD3 bispecific antibody using the Genmab DuoBody® technology (Ab-957) to recruit T cells to BCMA-expressing MM cells so that T cells could be activated and induced to kill BCMA+ cancer cells. This antibody can induce cytotoxicity ...

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