mucopolysaccharidosis type 4A

A form of mucopolysaccharidosis, an autosomal recessive lysosomal storage disease (OMIM:253000) characterised by intracellular accumulation of keratan sulfate and chondroitin-6-sulfate.
Clinical findings
Short stature, skeletal dysplasia, dental anomalies, and corneal clouding. Intelligence is normal; no CNS involvement, except where skeletal changes compress anatomic structures and cause neurologic complications. Patients with the severe phenotype usually do not survive past the second or third decade of life.
Molecular pathology
Defects of GALNS, which encodes a sulphatase required for the degradation of glycosaminoglycans, keratan sulfate and chondroitin 6-sulfate, cause Morquio A syndrome.

单词	mucopolysaccharidosis type 4a
释义	mucopolysaccharidosis type 4A mucopolysaccharidosis type 4A A form of mucopolysaccharidosis, an autosomal recessive lysosomal storage disease (OMIM:253000) characterised by intracellular accumulation of keratan sulfate and chondroitin-6-sulfate. Clinical findings Short stature, skeletal dysplasia, dental anomalies, and corneal clouding. Intelligence is normal; no CNS involvement, except where skeletal changes compress anatomic structures and cause neurologic complications. Patients with the severe phenotype usually do not survive past the second or third decade of life. Molecular pathology Defects of GALNS, which encodes a sulphatase required for the degradation of glycosaminoglycans, keratan sulfate and chondroitin 6-sulfate, cause Morquio A syndrome.
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