This allele was generated at The Jackson Laboratory by electroporating Cas9 protein and 2 guide sequences: TCTTGAATCCACACAAGAAT and GTACTTCAGCTTCATTCAAG. This resulted in a 488 bp deletion of Chr6:40,449,418-40,449,905 (GRCm38/mm10) and removes exon ENSMUSE00000266539. (J:188991)