Preferred Label : Fucosidosis;
Type : Phenotype, molecular basis known;
Alternative titles and symbols : Alpha-L-fucosidase deficiency;
Description : Fucosidosis is an autosomal recessive lysosomal storage disease caused by defective
alpha-L-fucosidase with accumulation of fucose in the tissues. Clinical features include
angiokeratoma, progressive psychomotor retardation, neurologic signs, coarse facial
features, and dysostosis multiplex. Fucosidosis has been classified into 2 major types.
Type 1 is characterized by rapid psychomotor regression and severe neurologic deterioration
beginning at about 6 months of age, elevated sweat sodium chloride, and death within
the first decade of life. Type 2 is characterized by milder psychomotor retardation
and neurologic signs, the development of angiokeratoma corporis diffusum, normal sweat
salinity, and longer survival (Kousseff et al., 1976).;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutations in the alpha-L-fucosidase gene (FUCA1, 230000.0001);
Laboratory abnormalities : Elevated sweat chloride; Vacuolated lymphocytes; Increased urine oligosaccharides; Alpha-L-fucosidase deficiency;
Prefixed ID : #230000;
Origin ID : 230000;
UMLS CUI : C0016788;
Currated CISMeF NLP mapping
DO Cross reference
Genes related to phenotype
HPO term(s)
Not associated HPO term(s)
ORDO concept(s)
Semantic type(s)
UMLS correspondences (same concept)