The Crocodile

GM1-Gangliosidosis

GM1-gangliosidosis caused by lack of ß-galactosidase has characteristics of mucopolysacharidosis and sphingolipidosis. ß-galactosidase plays a role in both metabolic pathways and is deficient in this disease. Macrocephalus and dysostosis multiplex are findings whose cause can be found in the defect of the mucopolysaccharide metabolism. In contrast, neurological findings - motor developmental disorder, pyramidal tract signs, cherry-red spot, epilepsy and mental retardation - are to be interpreted in terms of sphingolipidosis. In the course of the disease, pronounced spastic cerebral palsy dominates the clinical picture. In attenuated forms coarse facial features, macrocephalus organomegaly and cherry-red spots can be absent.

GM1-Gangliosidosis | SphinCS - Clinical Science for LSD

Etiology: Deficiency of beta-galactosidase
Gene: GLB1 Gene
Mode of inheritance: Autosomal recessive
Phenotypes:

Leading symptoms:
Infantile form (Type I)
(Synonym: Norman-Landing-Syndrome)

(Age of onset: ≤ 6 months)

Late-infantile form (Type IIa)
(Age of onset: > 6 months -3 years)

Juvenile form (Type IIb)
(Age of onset: > 3 - 10 years)
(Synonym: Derry-Syndrom)

Adult form (Type III)
(Age of onset: > 10 years)

Diagnostics:

Therapy:
Individually, symptomatic