[Hypoxia-Inducible Factor Prolyl Hydroxylase Enzyme Inhibitors: A Novel Therapy for Anemia Treatment in CKD Patients]

Anemia is a major complication of chronic kidney disease (CKD). Its prevalence increases with advancing age and progression of kidney disease. The main cause of anemia linked to CKD is represented by the reduction erythropoietin secretion. The increase in cardiovascular risk and mortality is strongly associated with the presence of anemia, and grows with the severity of the anemia, as described in numerous studies. The main therapies for the control of anemia have so far been represented by iron supplementation, the use of synthetic erythropoietin and blood transfusions. Despite the availability of adequate therapies, the prevalence of anemia in CKD continues to be significant. Drugs that inhibit the enzyme prolyl hydroxylase of hypoxia inducible factor (HIF-PHi) are able to mimic a condition of hypoxia and increase the production of endogenous erythropoietin. HIF-PHi therefore represents an important therapeutic alternative for the control of anemia linked to CKD. Numerous studies have confirmed the ability of HIF-PHi to correct anemia and maintain hemoglobin at adequate values; they also highlighted other potential beneficial pleiotropic factors on cholesterol control and iron homeostasis. Further studies are needed to confirm the safety of the drug, especially regarding cardiovascular risk, vascular thrombosis and neoplastic growth. This document highlights the mechanism of action, effects and pharmacological characteristics of HIF-PHi.