The importance of the lysosomal pathway in CNS function and LBD and PD is highlighted by the identification of genetic risk factors or rare variants/mutations in lysosomal genes in case-control association studies (GBA and NAGLU)[7,9–11], GWAS studies (LAMP3, SCARB2)[24,25] or linkage analysis and exome sequencing in PD families (ATP13A2, VPS35 (endolysosomal pathway)[26,27]. Here, LAMP3 is linked to Parkinson disease.