ホメオティック遺伝子
miR-615 has been found to reside within "Hox gene" clusters, alongside "Hox" genes other miRNAs. "Hox" genes are involved in anterior-posterior axis patterning. miR-615 is located at the "HOXC5" (encdoing the HOXC5 homeobox protein) intron in mammals.