This allele from IMPC was generated at Medical Research Council Harwell by injecting CAS9 RNA and 4 guide sequences CCTAACTACTAAACATCTGCTAC, AGCATGGGCTTGCCTCTATCAGG, AGTCTGAAGTAAGTACAAGCAGG, AGAACACTGTATCGGATGTTAGG, which resulted in a Exon Deletion. (J:265051)