STAT3 and lung cancer: Potential mechanisms of the miRNAs on lung cancer were explored in previous study (Seen in Table 7), the main signaling pathways including PI3K/Akt/NF-Κb (miR-21, miR-223, miR-145, miR-126, and miR-30a) 24-28, STAT3 (miR-126, and miR-197) 27, 29, 30, estrogen (miR-21 and miR-210) 31, et al.