Interestingly, glycoproteome analysis revealed a number of significantly enriched pathways, including ceramide catabolic processes, and also an increased level of glycosylated LAMP1, LAMP2 and cathepsin D, which are necessary for transport from the ER via the Golgi to the lysosome, in GBA-PD iPSC-dopamine neurons. This evidence concerns the gene LAMP1 and Parkinson disease.