Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Guanidinoacetate methyltransferase deficiency ?
    ### Response:
    Guanidinoacetate methyltransferase deficiency is an inherited condition that affects the brain and muscles. Affected people may begin showing symptoms of the condition from early infancy to age three. Signs and symptoms can vary but may include mild to severe intellectual disability, epilepsy, speech development limited to a few words, behavioral problems (i.
    