Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to 7q11.23 duplication syndrome ?
    ### Response:
    7q11.23 duplication syndrome results from an extra copy of a region on the long (q) arm of chromosome 7 in each cell. This region is called the Williams-Beuren syndrome critical region (WBSCR) because its deletion causes a different disorder called Williams syndrome, also known as Williams-Beuren syndrome.
    