Exon 37 was targeted using an sgRNA (targeting TTAACTGAGTTGCGGTCACATGG) with CRISPR/Cas9 technology, resulting in an 8 bp deletion eliminating ATGTGACC (GRCm39:chr3:86352699-86352706), leading to a frameshift and premature stop codon (H1949Rfs*29). (J:257099)