Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to glucose-galactose malabsorption ?
    ### Response:
    Mutations in the SLC5A1 gene cause glucose-galactose malabsorption.  The SLC5A1 gene provides instructions for producing a sodium/glucose cotransporter protein called SGLT1. This protein is found mainly in the intestinal tract and, to a lesser extent, in the kidneys, where it is involved in transporting glucose and the structurally similar galactose across cell membranes.
    