Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to neurofibromatosis type 2 ?
    ### Response:
    Mutations in the NF2 gene cause neurofibromatosis type 2. The NF2 gene provides instructions for making a protein called merlin (also known as schwannomin). This protein is produced in the nervous system, particularly in Schwann cells, which surround and insulate nerve cells (neurons) in the brain and spinal cord.
    