Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to ALG6-congenital disorder of glycosylation ?
    ### Response:
    ALG6-CDG is caused by mutations in the ALG6 gene. This gene provides instructions for making an enzyme that is involved in a process called glycosylation. Glycosylation is the process by which sugar molecules (monosaccharides) and complex chains of sugar molecules (oligosaccharides) are added to proteins and fats.
    