Objective: Hyporesponsiveness to erythropoiesis-stimulating agents (ESAs) is a prevalent problem affecting hemodialysis (HD) patients. Roxadustat is an oral hypoxia-inducible factor prolyl hydroxylase inhibitor that stimulates erythropoiesis and regulates iron metabolism. We explored the ability of roxadustat to increase the hemoglobin (Hb) concentration in ESA-hyporesponsive patients undergoing HD and assessed its effect on iron metabolism and inflammation.
Methods: This prospective study included 30 patients with ESA-hyporesponsive anemia who had been undergoing stable dialysis. All patients received roxadustat three times per week for 24 weeks. The primary endpoint was the mean change in Hb from baseline to the average level over weeks 20 to 24. Iron metabolism markers, C-reactive protein, interleukin (IL)-6, and safety were also assessed.
Results: At week 24, roxadustat treatment resulted in a 2.5 ± 1.3 g/dL increase in the Hb level. In total, 28 of 30 patients (93.3%) had an Hb level increase of more than 1.0 g/dL from baseline. Seventeen patients (56.7%) met the endpoint, with a mean Hb level of at least 10.0 g/dL. Iron metabolism and IL-6 levels were also improved.
Conclusions: Oral roxadustat is effective for ESA-hyporesponsive anemia in maintenance HD patients and may also improve iron metabolism and IL-6 levels.
Keywords: Erythropoiesis-stimulating agent-hyporesponsive anemia; hemodialysis; hemoglobin; interleukin-6; iron metabolism; roxadustat.