Using an sgRNA (targeting GAGGACGTACCTCTGAGGATTGG) and an ssODN template (ATGCTGTAGTAGGGAGGTGTCGAATGATCCGGCATTCAAGAGACAAGAAAAATGAGCCCAGTCCCCAGAGGTACGTCCTCTCTGTGCCTTCCCTTTATTTATTTATATGTTAGATTTATTT) with CRISPR/Cas9 technology, asparagine codon 353 (AAT) was changed to serine (AGT)(p.N353S). This mimics the human p.Asn352Ser mutation associated with protein glycosylation defects. (J:317226)