Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Glucose transporter type 1 deficiency syndrome ?
    ### Response:
    Glucose transporter type 1 deficiency syndrome (GLUT1 deficiency syndrome) is an inherited condition that affects the nervous system. Signs and symptoms generally develop within the first few months of life and may include recurrent seizures (epilepsy) and involuntary eye movements.
    