NFKB1 and breast cancer: Another study claimed that BC’s epithelial-mesenchymal transition (EMT), invasion, and metastasis are caused by the exosome-derived microRNA-18b (miR-18b) from CAFs, which targets transcription elongation factor A like 7 (TCEAL7) and activates the nuclear factor-kappa B (NF-κB) pathway [28].