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]. The gene discussed is RUNX2; the disease is breast carcinoma.