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  • Title: Therapeutic effects of epoetin zeta in the treatment of chemotherapy-induced anaemia.
    Author: Tzekova V, Mihaylov G, Elezovic I, Koytchev R, Epoetin Zeta Oncology Study Group.
    Journal: Curr Med Res Opin; 2009 Jul; 25(7):1689-97. PubMed ID: 19505200.
    Abstract:
    OBJECTIVE: To perform an open, non-controlled, multiple-dose, international, multicentre, phase III study to evaluate epoetin zeta, a biosimilar epoetin referenced to epoetin alfa, for the treatment of chemotherapy-induced anaemia in patients with cancer. METHODS: Safety, tolerability and efficacy of subcutaneously administered epoetin zeta were assessed in 216 patients with solid tumours or non-myeloid haematological malignancies receiving chemotherapy and at risk of transfusion. RESULTS: A significant (p < 0.0001) increase in mean haemoglobin (Hb) level (1.8 g/dL) was observed between baseline and week 12 (intent-to-treat population); 176/216 (81.5%) patients achieved a response (increase in Hb > or = 1 g/dL or reticulocyte count > or = 40,000 cells/microL) by week 8. Over the treatment period, 231 treatment-emergent adverse events were experienced by 91 patients; 9/216 (4.2%) experienced a clinically significant thrombotic event within the first 12 weeks of epoetin zeta treatment, significantly lower than the assumed 18% baseline incidence (p < 0.0001) based on historical data from epoetin trials. No transfusion was necessary for 175/216 patients (81.0%) and quality of life improved over the study. No patients developed anti-erythropoietin antibodies. Sponsor trial no: CT-830-05-0009. CONCLUSION: This study demonstrates that subcutaneously administered epoetin zeta is well-tolerated and has efficacy in the treatment of anaemia in patients with cancer receiving chemotherapy and at risk of transfusion.
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