Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to dopamine transporter deficiency syndrome ?
    ### Response:
    Dopamine transporter deficiency syndrome is caused by mutations in the SLC6A3 gene. This gene provides instructions for making a protein called the dopamine transporter. This protein is embedded in the membrane of certain nerve cells (neurons) in the brain, where it transports a molecule called dopamine into the cell.
    