Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Galactosialidosis ?
    ### Response:
    Galactosialidosis is an autosomal recessive lysosomal storage disorder caused by mutations in the CTSA gene. It is characterized by coarse facial features, macular cherry-red spots, angiokeratoma (dark red spots on the skin), vertebral deformities, epilepsy, action myoclonus, and ataxia.
    