Genes linked to inherited PD, such as α-synuclein (SNCA), parkin (PARK2), DJ-1 (PARK7), PTEN induced kinase 1 (PINK1), and leucine-rich repeat kinase 2 (LRRK2), are also associated with mechanisms that increase oxidative stress [9]. The gene discussed is LRRK2; the disease is Parkinson disease.