Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to Joubert syndrome ?
    ### Response:
    Joubert syndrome and related disorders can be caused by mutations in at least 10 genes. The proteins produced from these genes are known or suspected to play roles in cell structures called cilia. Cilia are microscopic, finger-like projections that stick out from the surface of cells and are involved in chemical signaling.
    