gamma-amino butyric acid metabolism disorder homocarnosinosis lschriml MESH:C535328 A gamma-amino butyric acid metabolism disorder that is characterized by an excess of homocarnosine in the brain and has_material_basis_in a deficiency of serum carnosinase in its ability to hydrolyze homocarnosine. GARD:2730 DOID:0060177 disease_ontology 2011-11-08T02:02:12Z brain disease