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  • Title: [Treatment of renal anemia with darbepoetin alfa administered once every other week in predialysis patients with chronic kidney disease and previously treated with epoetin alfa].
    Author: Molina M, García Hernández MA, Navarro MJ, Pérez Silva F, Cacho M, De Gracia MC.
    Journal: Nefrologia; 2004; 24(1):54-9. PubMed ID: 15083958.
    Abstract:
    Darbepoetin alfa is an erythropoiesis-stimulating glycoprotein with up to 3 times longer half-life than recombinant human erythropoietin (rHuEPO) in humans. The aim of this study was to assess the efficacy and safety of darbepoetin alfa given once every other week as treatment of anemia in predialysis patients with chronic renal failure (CRF) previously treated with once-weekly epoetin alfa. A total of 42 CRF patients were included, all of whom had previously been treated with epoetin alfa and showed stable hemoglobin (Hb) levels without dose changes during the last 8 weeks prior to enrolment in this study. All patients received s.c. darbepoetin alfa once every other week at doses calculated from the protein mass equivalence between rHuEPO and darbepoetin alfa. Follow-up lasted for 24 weeks. Dose adjustments were conducted to preserve target Hb levels between 11 and 13 g/dl. Thirty-nine patients completed the 24 weeks of study. Hb levels increased during follow-up [mean values of 0.39 (p < 0.002), 0.58) (p < 0.001), and 0.83 g/dl (p < 0.001) at 8, 16 and 24 weeks, respectively] despite reducing the darbepoetin alfa dose up to 15% at 24 weeks [from 0.192 microg/kg body weight to 0.185, 0.178 and 0.163 at 8, 16, and 24 weeks, respectively (p < 0.001)]. No adverse events related to darbepoetin alfa were reported. In conclusion, these results show s.c. administration of darbepoetin alfa once every other week was superior to weekly epoetin alfa as a maintenance treatment for anemia in predialysis CRF patients, since the former provided higher Hb levels. Moreover, darbepoetin alfa administration was safe in these patients.
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