Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to hereditary hypophosphatemic rickets ?
    ### Response:
    Hereditary hypophosphatemic rickets can result from mutations in several genes. Mutations in the PHEX gene, which are responsible for X-linked hypophosphatemic rickets, occur most frequently. Mutations in other genes cause the less common forms of the condition.
    