 It is also predicted computationally that the miR-138 gene exists in the genome of other animals including horse ("Equus caballus"), rhesus macaque ("Macaca mulatta"), takifugu rubripes ("Fugu rubripes"), Bornean orangutan ("Pongo pygmaeus"), common chimpanzee ("Pan troglodytes"), "Tetraodon nigroviridis" and western clawed frog ("Xenopus tropicalis").In human genome, there are two miR-138 associated genes and they are not located in any cluster.More precisely, the miR-138-1 gene is in region 5 at 3p21.3 and miR-138-2 is located on chromosome 16 (16q13).