Mucopolysaccharidosis, Type Ivb, also known as mucopolysaccharidosis type ivb, is related to gm1-gangliosidosis, type iii and gm1-gangliosidosis, type i, and has symptoms including ulnar deviation of the wrist An important gene associated with Mucopolysaccharidosis, Type Ivb is GLB1 (Galactosidase Beta 1), and among its related pathways/superpathways are Infectious disease and Metabolism. Affiliated tissues include spinal cord and bone, and related phenotypes are hypoplasia of the odontoid process and coarse facial features