Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Chondrodysplasia punctata 1, X-linked recessive ?
    ### Response:
    Chondrodysplasia punctata 1, X-linked recessive (CDPX1) is a genetic disorder present from birth that affects bone and cartilage development. On x-ray, affected infants have characteristic spots at the ends of their bones. These spots are called chondrodysplasia punctata or stippled epiphyses and typically disappear between age 2 and 3.
    