DO_rare_slim NCIthesaurus mucopolysaccharidosis mucopolysaccharidosis III NCI:C61262 DOID:14729 MESH:D009084 DOID:12801 disease_ontology SNOMEDCT_US_2025_09_01:190936000 ORDO:581 DOID:14788 A mucopolysaccharidosis characterized by a deficiency of the lysosomal enzyme resulting in incomplete breakdown of the heparan sulfate sugar chain. Mucopolysaccharidosis, MPS-III N-sulphoglucosamine sulphohydrolase deficiency OMIM mapping confirmed by DO. [SN]. Sanfilippo's syndrome UMLS_CUI:C0026706 heparan sulfate sulfatase deficiency naglu deficiency