Interestingly, genome-wide association studies and meta-analysis for PD have identified intronic single-nucleotide polymorphisms (SNPs) in the CD157/BST1 gene on human chromosome 4p15 as new susceptibility loci in several populations (Satake et al., 2009; Tan et al., 2010; Liu et al., 2011, 2013b; Nalls et al., 2011; Saad et al., 2011; Simón-Sánchez et al., 2011; Spencer et al., 2011; Zimprich, 2011; Lill et al., 2012; Sharma et al., 2012), with reported variations (Chang et al., 2011; Miyake et al., 2012; Wang et al., 2012; Zhu et al., 2012; Chen et al., 2013; Chung et al., 2013). The gene discussed is BST1; the disease is Parkinson disease.