Receptor activator of NF-κB ligand (RANKL), also known as OPGL, TRANCE, ODF and TNFSF11, is a member of the TNF family. RANKL and its receptor, RANK (TNFRSF11A) are key regulators of bone remodeling and are essential for the development and activation of osteoclasts. RANKL induces the differentiation of osteoclast precursor cells and stimulates the resorption and survival of mature osteoclasts. Bone remodeling results from the coordinate action of bone resorption by osteoclasts and the formation of new bone by osteoblasts. TRAF adaptor proteins play an important role in initial events of the signal transduction pathways induced by RANK...