STAT3 and ovarian carcinoma: In oral squamous cell carcinoma and ovarian carcinoma, a role of EV miR-21 has been shown in hypoxic cancer cell proliferation, migration and invasion via HIF1α and HIF2α stabilization 95, 114, and in lung carcinoma, roles of miR-31-5p, miR-193-3p, miR-201-3p and miR-5100 were found via SATB2-revered epithelial-mesenchymal transition, MAPK/ERK1/2 activation and STAT3 activation 97, 121.