This allele from IMPC was generated at Medical Research Council Harwell by injecting CAS9 RNA and 4 guide sequences CCATAATGCCTCTGCCGAGGGAC, AGCCATAATGCCTCTGCCGAGGG, CCCAGCAAGAGGCGAGACGGCGG, GACGGCGGAACCTCACCATCGGG, which resulted in an intragenic deletion. (J:237616)