Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Mucopolysaccharidosis type IVA ?
    ### Response:
    Mucopolysaccharidosis type IVA (MPS IVA, also called Morquio syndrome, type A) is a metabolic condition that primarily affects the skeleton. The severity, age of onset, and associated symptoms vary significantly from person to person and range from a severe and rapidly progressive, early-onset form to a slowly progressive, later-onset form.
    