Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to Christianson syndrome ?
    ### Response:
    Christianson syndrome is caused by mutations in the SLC9A6 gene, which provides instructions for making a protein called sodium/hydrogen exchanger 6 (Na+/H+ exchanger 6 or NHE6). The NHE6 protein is found in the membrane surrounding endosomes, which are compartments within cells that recycle proteins and other materials.
    