" /> Salla disease - CISMeF





Preferred Label : Salla disease;

Symbol : SD;

CISMeF acronym : SD;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Sialuria, finnish type;

Description : Sialic acid storage diseases are autosomal recessive neurodegenerative disorders that may present as a severe infantile form (ISSD) or as a slowly progressive adult form that is prevalent in Finland (Salla disease). The main symptoms are hypotonia, cerebellar ataxia, and mental retardation; visceromegaly and coarse features are also present in the infantile cases. Progressive cerebellar atrophy and dysmyelination have been documented by MRI. Enlarged lysosomes are seen on electron microscopic studies, and patients excrete large amounts of free sialic acid in the urine (Verheijen et al., 1999).;

Inheritance : Autosomal recessive;

Molecular basis : Caused by mutations in the solute carrier family 17 (sodium phosphate), member 5 gene (SLC17A5, 604322.0001);

Laboratory abnormalities : Increased urinary free sialic acid excretion (N-acetylneuraminic acid, 5-20x normal) Enlarged lysosomal vacuoles in lymphocytes and fibroblasts;

Prefixed ID : #604369;

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02/05/2025


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