Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Pontocerebellar hypoplasia type 2 ?
    ### Response:
    Pontocerebellar hypoplasia type 2 (PCH2) is a rare condition that affects the development of the brain. Signs and symptoms vary but may include microcephaly, developmental delay with lack of voluntary motor development, intellectual disability and movement disorders (i.
    