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  • Title: Darbepoetin alfa administration to achieve and maintain target hemoglobin levels for 1 year in patients with chronic kidney disease.
    Author: Hertel JE, Locay HR, Scarlata DS, Prathikanti R, Audhya PK.
    Journal: Mayo Clin Proc; 2006 Sep; 81(9):1188-94. PubMed ID: 16970215.
    Abstract:
    OBJECTIVE: To assess the efficacy and safety of every-other-week darbepoetin alfa therapy in treating anemia and maintaining hemoglobin levels for 1 year in patients with chronic kidney disease (CKD) who were not undergoing dialysis and who had not previously received erythropolesis-stimulating proteins (ESPs). PATIENTS AND METHODS: This multicenter 52-week study (evaluation period, weeks 20-32), a subanalysis of the Simplify the Treatment of Anemia with Aranesp study, enrolled patients with CKD who were not receiving dialysis (creatinine clearance < or =70 mL/min or estimated glomerular filtration rate [GFR] < or =60 mL/min). Patients evaluated in this analysis were not receiving ESPs, had hemoglobin concentrations less than 11 g/dL, and had transferrin saturation of 20% or higher during screening. Patients Initiated every-other-week darbepoetin alfa therapy at 0.75 microg/kg, with the dose subsequently titrated to maintain hemoglobin levels not to exceed 12 g/dL. The first study participant was enrolled on February 4, 2002, and the last participant completed the study on March 31, 2004. RESULTS: The analysis included 911 patients (mean [SD] age, 66.4 [14.2] years; 54.3% female; 55.3% white). The least squares mean evaluation hemoglobin concentration was 11.54 g/dL (95% confidence interval, 11.47-11.61 g/dL), and the change from baseline was 1.6 g/dL (95% confidence interval, 1.5-1.7 g/dL). The mean (SD) every-other-week darbepoetin alfa dose during evaluation was 44.5 (33.7) microg. Iron supplementation was administered to 573 patients (62.9%) during the study. Darbepoetin alfa was well tolerated throughout the study period. CONCLUSION: Darbepoetin alfa initiated every other week safely and effectively treated anemia and maintained hemoglobin for 1 year in patients with CKD who were not undergoing dialysis and who were not receiving prior ESP therapy.
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