This allele produced from project TCPR0381 at The Centre for Phenogenomics by injecting Cas9 mRNA and two guide RNAs with the spacer sequences TTGCAGTTCAGGTAAGGGGC and TTCACGAAGAAAGTTTGTGG. This resulted in a 77-bp del on Chr2 from 148847934 to 148848010 with a 1-bp insertion of G (GRCm38). (J:165963)