Synucleinopathies, including Parkinson’s disease (PD), Lewy body dementia (LBD), and Multiple system atrophy (MSA), are a group of neurodegenerative diseases marked by aggregation of α-synuclein (α-syn) into Lewy bodies primarily within the central but to some extent within the peripheral nervous system [1]. This evidence concerns the gene SNCA and Parkinson disease.