Exons 3 and 4 were targeted for deletion with two sgRNA (targeting GGGACGCTGGCTGATCATGTTGG and GCGAGTTCGTCCCTGAAATGAGG) and an ssODN (GACATGGCCTGGATCATGGACTTGCTACAGCTCAGCTACACAAGATGAAGAGAGCCAACAAGCTTCAGGGACGAACTCGCATCCCCACGTCACTGACAGACACCTGCCTGCTGCCTGTTGATT) using CRISPR/Cas9 technology, resulting in the deletion of the two exons. (J:307589)