Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Mental retardation x-linked with cerebellar hypoplasia and distinctive facial appearance ?
    ### Response:
    What are the signs and symptoms of Mental retardation x-linked with cerebellar hypoplasia and distinctive facial appearance? The Human Phenotype Ontology provides the following list of signs and symptoms for Mental retardation x-linked with cerebellar hypoplasia and distinctive facial appearance.
    