This allele from project Cnksr2-7605J-M4582 was generated at The Jackson Laboratory by injecting Cas9 RNA and 4 guide sequences ATAAGTAACCCCACATACAT, TGTACAAACCGATGTATGTG, TTGTCCCACTGCCATCACAT and GAAAAGCTTTTAATAAATAA, which resulted in a 321 bp deletion spanning exon 3 beginning at Chromosome X negative strand position 157994008 bp, CATAGGATGATGAAAAGCTT, and ending after TAAGTAACCCCACATACATCG at 157993688 bp (GRCm38/mm10). This mutation deletes exon 3 and 118 bp of flanking intronic sequence including the splice acceptor and donor, and is predicted to result in a change in amino acid sequence after residue 76 and early truncation 14 amino acids later. (J:188991)