Osteomimicry factors expressed by breast cancer cells that home to bone include, for example, Runt-related transcription factor 2 (Runx2), Bone Morphogenetic Proteins (BMPs), Alkaline Phosphatase (ALP), PTHrP, RANKL, or OPG—reviewed in great detail in [71]. Here, TNFSF11 is linked to breast cancer.