• Lucia Del Vecchio and Francesco Locatelli.
• a Department of Nephrology and Dialysis , A. Manzoni Hospital , Lecco , Italy.
• Expert Opin Investig Drugs. 2018 Jan 1; 27 (1): 125-133.

IntroductionAnaemia is one of the hallmarks of advanced chronic kidney disease (CKD); it correlates with a lower quality of life and increased cardiovascular risk. Currently its management is based on iron and erythropoiesis-stimulating agents (ESAs) therapy. Given safety issues on ESA therapy and excessive iron use, anaemia management is still suboptimal. Areas covered: The inhibitors of the prolyl-hydroxylases domain (PHD) are oral drugs which activate the hypoxia-inducible factors (HIF) and stimulate the production of endogenous erythropoietin. Roxadustat (FG-4592) is a second-generation PHD inhibitor; it is undergoing now phase-III clinical development. Expert opinion: Phase-II clinical trials have shown that roxadustat is effective and save in the short term in either non-dialysis or dialysis CKD patients. Roxadustat is a chemical drug and thus has the potential of being cheaper than traditional ESAs. Given that the peaks of endogenous EPO are much lower than those observed with traditional ESA, it is possible to speculate the roxadustat (and more in general PHD inhibitors) will be safer than ESA on cardiovascular safety end-points. Considering that HIFs are involved in different pathways, with possible promotion of relevant side effects, their safety must be proven in long-term studies.

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