Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) L-arginine:glycine amidinotransferase deficiency ?
    ### Response:
    L-arginine:glycine amidinotransferase (AGAT) deficiency is a rare condition that primarily affects the brain. People with AGAT deficiency generally have mild to moderate intellectual disability. Other signs and symptoms may include seizures, delayed language development, muscle weakness, failure to thrive, autistic behaviors, and delayed motor milestones (i.
    