Term Name:	mucopolysaccharidosis type IIIA
Synonyms:	heparan sulfamidase deficiency, MPS3A, MPSIIIA, mucopolysaccharidosis III-A, mucopolysaccharidosis type 3A, mucopolysaccharidosis type IIIA (Sanfilippo A), Sanfilippo syndrome type A
Definition:	A mucopolysaccharidosis III characterized by severe clinical manifestation and earlier age of onset compared to other forms of mucopolysaccharidosis III that has_material_basis_in homozygous or compound heterozygous mutation in the SGSH gene on chromosome 17q25.3.
Ontology:	Human Disease [DOID:0111395]   ( DOID:0111395 )