Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) mucopolysaccharidosis type II ?
    ### Response:
    Mucopolysaccharidosis type II (MPS II), also known as Hunter syndrome, is a condition that affects many different parts of the body and occurs almost exclusively in males. It is a progressively debilitating disorder; however, the rate of progression varies among affected individuals.
    