Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to ALG12-congenital disorder of glycosylation ?
    ### Response:
    Mutations in the ALG12 gene cause ALG12-CDG. This gene provides instructions for making an enzyme that is involved in a process called glycosylation. During this process, complex chains of sugar molecules (oligosaccharides) are added to proteins and fats (lipids).
    