Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) myoclonic epilepsy myopathy sensory ataxia ?
    ### Response:
    Myoclonic epilepsy myopathy sensory ataxia, commonly called MEMSA, is part of a group of conditions called the POLG-related disorders. The conditions in this group feature a range of similar signs and symptoms involving muscle-, nerve-, and brain-related functions.
    