| Background | Cinpanemab is a human-derived monoclonal antibody directed against α-synuclein. Genetic and pathology evidence implicate this protein in the molecular pathogenesis of Parkinson's disease (PD) and other α-synucleinopathies such as dementia with Lewy bodies (DLB). In 2010, Biogen licensed cinpanemab from Neurimmune. The antibody was generated with reverse translational medicine technology from naturally occurring, presumably protective antibodies found in healthy aged donors, as were aducanumab and other antibodies in the Biogen-Neurimmune partnership. The antibody, previously known as BIIB054, binds to α-synuclein residues 1-10, with 800-fold higher affinity for aggregated over monomeric α-synuclein. The antibody inhibits α-synuclein spreading in cell-based assays, and slows pathology and motor symptoms in mice (Weihofen et al., 2019). |
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