Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) medullary cystic kidney disease type 1 ?
    ### Response:
    Medullary cystic kidney disease type 1 (MCKD1) is an inherited condition that affects the kidneys. It leads to scarring (fibrosis) and impaired function of the kidneys, usually beginning in adulthood. The kidneys filter fluid and waste products from the body.
    