Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Charcot-Marie-Tooth disease type 1E ?
    ### Response:
    Charcot-Marie-Tooth disease type 1E (CMT1E) is a form of Charcot-Marie-Tooth disease, which is a group of rare conditions that affect the peripheral nerves. Signs and symptoms of CMT1E generally become apparent between age 5 and 25 years, although the age of onset and disease severity can vary significantly from person to person.
    