The<unk>  are caused by a deficiency of beta-galactosidase, with resulting abnormal storage of acidic lipid materials in cells of the central and peripheral nervous systems, but particularly in the nerve cells.
GM1 gangliosidoses
GM2 gangliosidoses
GM2-gangliosidosis, AB variant
Sphingolipidoses
Beta-mannosidosis
Glycogen storage disease type 0
Galactosialidosis
Mucopolysaccharidosis type I