Parkinson's disease is the most common neurodegenerative movement disorder [8, 9] and typically involves progressive loss of dopaminergic (DA) neurones in the substantia nigra (SN) and accumulation of cytoplasmic inclusions, Lewy bodies (LB) and Lewy neurites composed of alpha-synuclein (α-synuclein) [10]. Here, SNCA is linked to Parkinson disease.