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