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J Pediatr. 1975 May;86(5):713-7.

Aspartylglucosaminuria: psychomotor retardation masquerading as a mucopolysaccharidosis.


A 5-year-old girl with coarse facies, visceromegaly, and vacuolated lymphocytes is presented as the first case of aspartylglucosaminuria diagnosed in this country. This metabolic defect in glycoprotein catabolism can be clinically confused with other storage diseases such as the mucopolysaccharidoses and mucolipidoses. It is not diagnosed by routine laboratory screening methods. Special studies are required to confirm the diagnosis, but a thin-layer chromatography method for screening urine is presented for use when the diagnosis is suspected. The developmental potential in this inborn error of metabolism is documented.

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