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  • Title: Recombinant human erythropoietin in cancer-related anemia: an evidence-based review.
    Author: Desai J, Demetri GD.
    Journal: Best Pract Res Clin Haematol; 2005; 18(3):389-406. PubMed ID: 15792913.
    Abstract:
    Anemia is a common complication of cancer or anticancer therapy, with a significant negative impact on the functional status of patients and their quality of life (QOL). Recombinant human erythropoietin (EPO) was developed in the 1980's and was initially developed for the treatment of anemia associated with chronic renal failure. Subsequently, randomized, placebo-controlled clinical trials in the oncology setting were performed in the early 1990's. These studies demonstrated in cancer patients that EPO could increase the levels of hemoglobin (Hb), decrease the need for red blood cell transfusions, and also suggested that these outcomes were associated with improved QOL metrics as reported by the patients themselves. Based on the results of these studies, EPO was granted regulatory approval to be used for the treatment of anemia in patients with non-myeloid malignancies where anemia was due to the effect of concomitantly administered chemotherapy. To further expand the findings of the registration studies, and to develop more complete QOL data, three similarly designed open-label community-based studies were performed, enrolling a total of approximately 7000 patients. These studies consistently demonstrated in the supportive care of cancer patients receiving chemotherapy that the use of EPO could induce increases in the levels of Hb and that these correlated with patient-reported improvements in QOL metrics. The correlation between an improvement in Hb and QOL has also been confirmed in a larger randomized, placebo-controlled trial. Careful analyses of data from this study also helped support earlier findings that EPO could be effective for patients with varying degrees of anemia, and that increasing and maintaining Hb levels close to the physiologically normal levels resulted in the optimal improvements in QOL. While further investigations of EPO as a mechanism to improve the antineoplastic efficacy of chemoradiotherapy have not yet been positive, the overall experience with this agent remains very favorable after extensive studies and long-term clinical use in oncology.
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