Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to Cockayne syndrome ?
    ### Response:
    Cockayne syndrome can result from mutations in either the ERCC6 gene (also known as the CSB gene) or the ERCC8 gene (also known as the CSA gene). These genes provide instructions for making proteins that are involved in repairing damaged DNA. DNA can be damaged by ultraviolet (UV) rays from the sun and by toxic chemicals, radiation, and unstable molecules called free radicals.
    