This allele from project TCPR1158 was generated at The Centre for Phenogenomics by electroporating Cas9 ribonucleoprotein complexes with single guide RNAs having spacer sequences of TTATAAGGCTTATTGCCATT, CACGGGACAACCACACAAAC and AGGAAGTTAAAGTTACCCGT targeting a critical region. This resulted in a 464 bp deletion from Chr1:66473206 to 66473669 (GRCm38). (J:265051)