BNSP, Bone sialoprotein 1, BSP I, BSPI, Early T lymphocyte activation 1, ETA 1, ETA1, MGC110940, Nephropontin, OPN, osteopontin/immunoglobulin alpha 1 heavy chain constant region fusion protein, OSTP_HUMAN, secreted phosphoprotein 1 (osteopontin, bone si