This allele was generated at The Jackson Laboratory by electroporating Cas9 protein and 2 guide sequences: TTTTAACGTATCCAGGAAGT and GAAACCGGGAGTATAATGTC. This resulted in a 4,069 bp deletion of Chr2:75,977,898-75,981,966 (GRCm38/mm10) that removes exon ENSMUSE00000644392.