Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to DOLK-congenital disorder of glycosylation ?
    ### Response:
    DOLK-CDG is caused by mutations in the DOLK gene. This gene provides instructions for making the enzyme dolichol kinase, which facilitates the final step of the production of a compound called dolichol phosphate. This compound is critical for a process called glycosylation, which attaches groups of sugar molecules (oligosaccharides) to proteins.
    