The insertion of Velocigene cassette ZEN-Ub1 created a deletion of size 7262bp between positions 43766406-43773667 of exon 2 and most of exon 3) of Chromosome 5 (Build GRCm39). Semi-quantitative PCR confirmed the absence of transcript expression in epididymal what adipose tissue and lung. (J:136110, J:244352)