Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to retroperitoneal fibrosis ?
    ### Response:
    No genes associated with retroperitoneal fibrosis have been identified.  Retroperitoneal fibrosis occasionally occurs with autoimmune disorders, which result when the immune system malfunctions and attacks the body's own organs and tissues. Researchers suggest that the immune system may be involved in the development of retroperitoneal fibrosis.
    