Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Glycogen storage disease type 4 ?
    ### Response:
    What are the signs and symptoms of Glycogen storage disease type 4? The signs and symptoms of glycogen storage disease type 4 (GSD 4) can vary greatly between affected individuals, and several forms of GSD 4 have been described. Most affected individuals have a "classic" form characterized by progressive cirrhosis of the liver, eventually leading to liver failure.
    