Tyrosine-protein kinase transmembrane receptor ROR2 is also known as Neurotrophic tyrosine kinase, receptor-related 2 (NTRKR2), which belongs to the protein kinase superfamily and Tyr protein kinase family and ROR subfamily. ROR2 is broadly expressed during embryonic development and can be found in cells of all three germ layers as well as in most organ tissues. ROR2 binds the Wnt family ligand, Wnt-5a, to activate non-canonical Wnt signaling pathways. Activation of ROR2 signaling promotes cellular proliferation, differentiation, cell-polarization, and migration. ROR2 is important for osteogenic and chondrogenic differentiation of mesenchymal stem cells. ROR2 is also involved in neurite outgrowth and synapse development in the brain.