highly significantP < 0.0001
Over-representation analysis (ORA) of these lists, performed using the Web-based GEne SeT Analysis Toolkit ( http://www.webgestalt.org ) [ 33 ], demonstrated a highly significant enrichment ( P < 0.0001) of the cell component gene ontology category “mitochondrion” for let-7c-5p and miR-155-5p downregulated targets, with a cluster of 26 and 8 genes, respectively (Tables 1 and 2 ).