Lysosomal storage disorders (LSD) are characterized by the accumulation of diverse lipid species in lysosomes. Niemann-Pick type A/B (NPA/B) and type C diseases Niemann-Pick type C (NPC) are progressive LSD caused by loss of function of distinct lysosomal-residing proteins. acid sphingomyelinase and NPC1. respectively. https://www.nacrack.com/quick-grab-Chainsaw-File-super-grab/