JAK2 and breast cancer: BC069792 can inhibit the proliferation, invasion and metastasis of breast cancer cells in vivo and in vitro through the ceRNA regulatory network of BC069792-hsa-miR-658/miR-4739-KCNQ-JAK2-AKT.Inc RNA BC069792 is expressed in both the cytoplasm and nucleus, which acts as a ceRNA sponge adsorbing miR-658 and miR-4739 and upregulates the transmembrane protein KCNQ4 expression, thereby inhibiting AKT phosphorylation and inhibiting the proliferation and metastasis of breast cancer (add citation).