This allele from IMPC was generated at Toronto Centre for Phenogenomics by injecting CAS9 Protein and 4 guide sequences CCTTGGAGGTGCCCCTTAGGAGC, CCAGAACCTTACTGTGGTATGCT, GGTCTTGAGTAAGTAGCACCAGG, CCACACCGGACAAGACAGATATC, which resulted in a Exon Deletion.