On the other hand, dormancy induction in bone marrow has been attributed to the action of stromal BMP‐7, transforming growth factor‐β2 (TGF‐β2), and leukemia inhibitory factor (LIF) in prostate cancer, head‐and‐neck squamous cell carcinoma, and breast cancer, respectively (Bragado et al., 2013; Johnson et al., 2016; Kobayashi et al., 2011). Here, LIF is linked to breast cancer.