Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to neutral lipid storage disease with myopathy ?
    ### Response:
    Mutations in the PNPLA2 gene cause neutral lipid storage disease with myopathy. The PNPLA2 gene provides instructions for making an enzyme called adipose triglyceride lipase (ATGL). The ATGL enzyme plays a role in breaking down fats called triglycerides. Triglycerides are an important source of stored energy in cells.
    