MMP13 and rhabdomyosarcoma: Supportive evidence was obtained in a previous study on direct suppression of some oncogenes in rhabdomyosarcoma cells encoding matrix metalloproteinases (MMP-7, MMP-13), miRNA (Mir21), transforming protein RhoA (RhoA), and apoptosis inhibitor-1 (IAP-1)—possible regulators of transcriptional activity in eukaryotic cells [43].