LRRK2 and Parkinson disease: Other genes associated with mutations in PD include ubiquitin carboxy-terminal hydrolase L1, DJ-1, phosphatase and tensin homologue- (PTEN-) induced kinase 1 (PINK1), leucine-rich-repeat kinase 2 (LRRK2), the nuclear receptor NURR1, HTRA2, and τ [7].