For instance, miR-29c was found to be a tumour suppressor that inhibits cell proliferation by targeting VEGFA expression in lung adenocarcinoma [113]; miR-221/222 acts as an anti-tumour agent to inhibit erythropoiesis through downregulation of c-Kit receptor [114]; inhibition of miR-21 might upregulate several tumour suppressor genes, the PI3K pathway and the TGF-β pathway, which could lead to suppressing prostate cancer [115]. This evidence concerns the gene TGFB1 and neoplasm.