Mucopolysaccharidosis type IIIA

Mucopolysaccharidosis type IIIA, also known as Sanfilippo syndrome type A, is a rare, autosomal recessive lysosomal storage disease caused by pathogenic variants in the *SGSH* gene This genetic defect results in a deficiency of the lysosomal enzyme heparan N-sulfatase (sulfamidase), leading to toxic intracellular accumulation of the glycosaminoglycan heparan sulfate, primarily within the central nervous system Manifesting typically in early childhood following normal initial development, it repr...

Mucopolysaccharidosis type IIIA, also known as Sanfilippo syndrome type A, is a rare, autosomal recessive lysosomal storage disease caused by pathogenic variants in the *SGSH* gene The hallmark clinical progression includes profound developmental regression, progressive cognitive decline, intractable behavioral difficulties, sleep disturbances, loss of motor skills, and premature death, accompanied by comparatively mild somatic and skeletal features

This genetic defect results in a deficiency of the lysosomal enzyme heparan N-sulfatase (sulfamidase), leading to toxic intracellular accumulation of the glycosaminoglycan heparan sulfate, primarily within the central nervous system

This genetic defect results in a deficiency of the lysosomal enzyme heparan N-sulfatase (sulfamidase), leading to toxic intracellular accumulation of the glycosaminoglycan heparan sulfate, primarily within the central nervous system

Manifesting typically in early childhood following normal initial development, it represents the most common and clinically severe subtype of mucopolysaccharidosis type III The hallmark clinical progression includes profound developmental regression, progressive cognitive decline, intractable behavioral difficulties, sleep disturbances, loss of motor skills, and premature death, accompanied by comparatively mild somatic and skeletal features

Manifesting typically in early childhood following normal initial development, it represents the most common and clinically severe subtype of mucopolysaccharidosis type III

The hallmark clinical progression includes profound developmental regression, progressive cognitive decline, intractable behavioral difficulties, sleep disturbances, loss of motor skills, and premature death, accompanied by comparatively mild somatic and skeletal features

The hallmark clinical progression includes profound developmental regression, progressive cognitive decline, intractable behavioral difficulties, sleep disturbances, loss of motor skills, and premature death, accompanied by comparatively mild somatic and skeletal features