Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to hereditary neuralgic amyotrophy ?
    ### Response:
    Mutations in the SEPT9 gene cause hereditary neuralgic amyotrophy. The SEPT9 gene provides instructions for making a protein called septin-9, which is part of a group of proteins called septins. Septins are involved in a process called cytokinesis, which is the step in cell division when the fluid inside the cell (cytoplasm) divides to form two separate cells.
    