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Comparison of efficacy of roxadustat and erythropoietin for the treatment of renal anemia in patients with chronic kidney disease: a retrospective study

Background: Renal anemia is a common complication in patients with end-stage renal disease (ESRD). Both roxadustat and recombinant human erythropoietin (rhEPO) are alternative option for patients with renal anemia. However, the adverse events of rhEPO limited the wide use of it and the concrete difference of real clinical efficacy of rhEPO and roxadustat was still uncertain. This study aimed to assess the clinical efficacy of roxadustat for improving renal anemia in patients with chronic kidney disease.

Methods: A retrospective cohort study of 790 consecutive patients with renal anemia treated with roxadustat and rhEPO was conducted at the Zhejiang Provincial People's Hospital. Patients were classified into two groups: roxadustat (n=95) and rhEPO (n=695). Baseline characteristics were compared in two groups. After propensity-score matching at a 1:3 ratio, we compared the efficacy of roxadustat and rhEPO in improving anemia, mainly using the Mann-Whitney U test. The follow-up period lasted 24 weeks.

Results: The baseline characteristics were comparable between the two groups after propensity-score matching. There were no significant differences in the hemoglobin levels and estimated glomerular filtration rates (eGFRs) of the two groups before roxadustat or rhEPO treatment (P>0.05). The hemoglobin level after 4 weeks of treatment was 96 g/L in the roxadustat group, and the increase from baseline was 10 g/L; in the rhEPO group, these values were 87 and 6 g/L, respectively (P<0.001). After 12 weeks of treatment, the hemoglobin level and change from baseline were 105 and 15 g/L in the roxadustat group and 94 and 11 g/L in the rhEPO group, respectively (P<0.001). Similar results were observed after 24 weeks of treatment; the hemoglobin level and change from baseline were 105 and 17 g/L in the roxadustat group and 97 and 14 g/L in the rhEPO group (P=0.001).

Conclusions: This retrospective study demonstrated that orally administered roxadustat improved hemoglobin levels more than rhEPO in patients with CKD and anemia.

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S1007 Roxadustat (FG-4592) Roxadustat (FG-4592) is an HIF-α prolyl hydroxylase inhibitor in a cell-free assay, stabilizes HIF-2 and induces EPO production. Roxadustat potentiates RSL3 induced ferroptosis. Phase 3.

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Ferroptosis HIF