FOXK2 and breast cancer: Moreover, FOXK2 acts as a suppressor in breast cancer, renal clear cell carcinoma, non‐small cell lung cancer, glioma and gastric cancer2, 3, 4, 5, 6 but has oncogenic roles in leukaemia, breast cancer, prostate cancer, liver cancer, non‐small cell lung cancer and hepatocellular carcinoma.7, 8, 9, 10, 11, 12, 13