Definition: Genetic disorder of mucopolysaccharide metabolism characterized by skeletal abnormalities, joint instability, development of cervical myelopathy, and excessive urinary keratan sulfate. There are two biochemically distinct forms, each due to a deficiency of a different enzyme.
Other names Morquio's Disease; Eccentro-Osteochondrodysplasia; Disease, Morquio; Deficiencies, GALNS; Mucopolysaccharidosis Type IVB; Mucopolysaccharidosis Type IVA; Mucopolysaccharidosis Type IV B; Mucopolysaccharidosis Type IV A; Mucopolysaccharidosis 4B; Mucopolysaccharidosis 4; Morquio-B Disease; Morquio's Syndrome; Morquio's Disease Type B; Morquio Syndrome, Type B; Morquio Syndrome B; Morquio Syndrome A; Morquio Disease; Morquio B Syndrome; MPS IVA; MPS IV B
