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Neurodegenerative diseases are characterized by the selective degeneration of neuronal populations in different brain regions and frequently the formation of distinct protein aggregates that often overlap between diseases. While the causes of many sporadic neurodegenerative diseases are unclear, genes associated with familial or sporadic forms of disease and the underlying cellular pathways involved tend to support common disease mechanisms. Underscoring this concept, mutations in the Vacuolar Protein Sorting 35 Orthologue (VPS35) gene have been identified to cause late-onset, autosomal dominant familial Parkinson’s disease, whereas reduced VPS35 protein levels are reported in vulnerable brain regions of subjects with Alzheimer’s disease, neurodegenerative tauopathies such as progressive supranuclear palsy and Pick’s disease, and amyotrophic lateral sclerosis. Therefore, VPS35 is …