Using an sgRNA (targeting GCACATTGAGAGCAAGCTGC) and an ssODN template (AAGCACGAAGTTCACTTTCTGCACGAGGAGAGCATTCTGCAGCGTGCGCAGCAGCACATTGAGAGCAAGCTCCTCGGCTCCAATTCCTCCAGGATGTATTTCACCCAG) with CRISPR/Cas9 technology, valine codon 326 (GTG) was changed to alanine (GCG) (c.977T>C, p.V326A). (J:324056)