Parkinson’s disease (PD), the second most common neurodegenerative disease, is an age-dependent neurodegenerative and neuroinflammatory disease, characterized by progressive loss of dopaminergic neurons in the substantia nigra and the striatum, together with the alpha-synuclein aggregation and Lewy body inclusions (Dickson, 2012). The gene discussed is SNCA; the disease is Parkinson disease.