Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to Greenberg dysplasia ?
    ### Response:
    Mutations in the LBR gene cause Greenberg dysplasia. This gene provides instructions for making a protein called the lamin B receptor. One region of this protein, called the sterol reductase domain, plays an important role in the production (synthesis) of cholesterol.
    