Definition: an error of mucopolysaccharide metabolism characterized by deficiency of iduronate sulfatase, with excretion of dermatan sulfate and heparan sulfate in the urine; clinically similar to Hurler syndrome but distinguished by less severe skeletal changes, no corneal clouding, and X-linked recessive inheritance; caused by mutation in the iduronate sulfatase gene (IDS) on chromosome Xq.
Synonym(s): mucopolysaccharidosis type II
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Examples: glitazone, GI cocktail, etc.