Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to MYH9-related disorder ?
    ### Response:
    MYH9-related disorder is caused by mutations in the MYH9 gene. The MYH9 gene provides instructions for making a protein called myosin-9. This protein is one part (subunit) of the myosin IIA protein.  There are three forms of myosin II, called myosin IIA, myosin IIB and myosin IIC.
    