NCIt definition : An agonist of calcium-sensing receptors (CaSR), with potential use in the treatment
of secondary hyperparathyroidism (SHPT). Upon administration, upacicalcet targets
and binds to CaSRs expressed on the membranes of cells in the parathyroid glands,
which suppresses osteoclast activity and reduces the excessive secretion of parathyroid
hormone (PTH). This prevents the excessive PTH-mediated efflux of phosphorus and calcium
from bone into the blood and normalizes serum calcium and phosphorus levels. Upacicalcet
may decrease the risk of bone fracture, may lower depositions of phosphorus and calcium
salts in non-bone tissues, may reduce bone and joint pain and may slow the progression
of other diseases related to increased levels of PTH. CaSR controls calcium homeostasis
and regulates the release of PTH.;