NBI-56418 is a proprietary, orally active small molecule Gonadotropin-Releasing Hormone (GnRH) receptor antagonist that could diminish bone demineralisation. It is being developed by Neurocrine Biosciences.
NBI-56418, is a specific highly potent non-peptide, orally active antagonist of the GnRH receptor. This compound inhibits pituitary luteinizing hormone (LH) secretion directly, potentially preventing the several week delay and flare associated with peptide agonist therapy.
Receptor for gonadotropin releasing hormone (GnRH) that mediates the action of GnRH to stimulate the secretion of the gonadotropic hormones luteinizing hormone (LH) and follicle-stimulating hormone (FSH). This receptor mediates its action by association with G-proteins that activate a phosphatidylinositol-calcium second messenger system. Isoform 2 may act as an inhibitor of GnRH-R signaling.