Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to genitopatellar syndrome ?
    ### Response:
    Genitopatellar syndrome is caused by mutations in the KAT6B gene. This gene provides instructions for making a type of enzyme called a histone acetyltransferase. These enzymes modify histones, which are structural proteins that attach (bind) to DNA and give chromosomes their shape.
    