Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Menkes Disease ?
    ### Response:
    Menkes disease is caused by a defective gene named ATPTA1 that regulates the metabolism of copper in the body. The disease primarily affects male infants. Copper accumulates at abnormally low levels in the liver and brain, but at higher than normal levels in the kidney and intestinal lining.
    