A TI{CRIMIC.TG4.1} DNA cassette has been inserted into rig, in a coding intron, and is predicted to gene trap all annotated transcripts of the gene. 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: CTCGAATAACAAAAGCTCGATGG. The CR71695 insertion is 74 bp upstream of the 5' end of the CG13436 gene and may affect the expression.