PTEN-induced putative kinase 1 (PINK1), parkin (PRKN), and DJ-1 genes are all known to play a role in early onset PD (EOPD) (Bonifati et al., 2003; Dawson and Dawson, 2010; Kawajiri et al., 2011). The gene discussed is PARK7; the disease is Parkinson disease.