Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to Laing distal myopathy ?
    ### Response:
    Mutations in the MYH7 gene cause Laing distal myopathy. The MYH7 gene provides instructions for making a protein that is found in heart (cardiac) muscle and in type I skeletal muscle fibers. Type I fibers, which are also known as slow-twitch fibers, are one of two types of fibers that make up skeletal muscles.
    