This allele from project Gsg1l-8187J-M1359 was generated at The Jackson Laboratory by injecting Cas9 RNA and 4 guide sequences ACTCAGAGTCTGGTACCTGA, AGCCAGGATGAGGTGGACAG, CTAACAGTTCAGCTGGCAAG and CCCTTTCCAAGTTTAAGCAA, which resulted in a 106 bp deletion beginning at Chromosome 7 negative strand position 125,923,714 bp CTTAAACTTGGAAAGGGCTA, followed by 37 retained endogenous bases (TGGCTGGGGATGGGAGGTATCCTAGAGATGGGACAAG) followed by a second deletion of 303 bp that ends after ATGAGGTGGACAGGGGTGAG at 125,923,269 bp (GRCm38/mm10). In addition there is a 3 bp insertion (AGG)and a 6 bp deletion (CATGGC) 63 bp before the large interrupted deletion that will not alter the effects of the mutation. This mutation deletes exon 4 and 297 bp of flanking intronic sequence including the splice acceptor and donor, and is predicted to cause a change of amino acid sequence after residue 173 and early truncation 45 amino acids later. (J:188991)