NCIt definition : The orally bioavailable hydrochloride salt of the calcimimetic cinacalcet. Cinacalcet
increases the sensitivity of calcium-sensing receptors on chief cells in the parathyroid
gland to extracellular calcium, thereby reducing parathyroid hormone (PTH) secretion.
A reduction in PTH levels inhibits osteoclast activity, which may result in a decrease
in cortical bone turnover and bone fibrosis, and normalization of serum calcium and
phosphorus levels. In addition, by reducing PTH levels, cinacalcet may reduce PSA
levels; PTH appears to raise PSA levels and may increase prostate cancer cell growth.;