Also, SCARB2 gene that encodes LIMP2 has been identified at a PD risk locus (Do et al., 2011; Michelakakis et al., 2012; Hopfner et al., 2013), and the recent study of age at onset of PD GWAS that is largest to date has confirmed SCARB2 as a risk gene (Blauwendraat et al., 2019). This evidence concerns the gene SCARB2 and Parkinson disease.