A TI{CRIMIC.TG4.1} DNA cassette has been inserted into Ir75d, in a coding intron, and is predicted to gene trap all annotated transcripts of the gene. The insertion is also within COX6AL2, in an intron in the 3' UTR of one annotated transcript isoform and downstream of the other isoform. The TI{CRIMIC.TG4.1} cassette was inserted via the CRISPR/Cas-9 drop-in technique, using a dsDNA donor vector with homology arms of length 200bp. The sgRNA sequence used to target the gene was: TTTATGACCCCACAGTACACTGG.