Isoleucine codon 293 (ATT), straddling exons 8 and 9, was changed to valine (GTT) (NM_172493.2: c.877A>G, NP_766081.1:p.I293V) using an sgRNA and ssODN template with CRISPR/Cas9 technology. The mutation mimics the human NM_006729.4:c.868A>G, NP_006720.1:p.I290V missense and potential splice site variant associated with nonsyndromic hearing loss (NSHL). (J:332881)