Importantly, miR-30a-5p directly binds to the 3′-UTR of FOXD1 and suppresses its expression in several types of cancer cells, e.g., lung squamous cell carcinoma, pancreatic ductal adenocarcinoma, osteosarcoma, and ovarian cancer [50,51,52,53]. The gene discussed is FOXD1; the disease is osteosarcoma.