GPNMB and melanoma: Independently, Gpnmb was also identified from melanoma cell lines19, 20, breast cancer21, dendritic cells (DCs) and T cells as dendritic cell heparin sulfate proteoglycan integrin dependent ligand (DC-HIL)22, 23, and human bone marrow cells as human hematopoietic growth factor inducible neurokinin (HGFIN)24.