Darbepoetin Alfa assessment in chemotherapy induced anemia

Abstract

18617 Background: Anemia is a very common complication of cancer and its treatment. Epoetins have been proven effective in correcting anemia in cancer patients resulting to the reduction of the need for blood transfusions and having a positive impact to the quality of life (QoL). Darbepoetin alfa, is a novel erythropoiesis stimulating protein (NESP) with longer half life. Methods: This is a prospective, single-centre, clinical trial. Patients with haemoglobin < 12 g/dl, suffering from cancer (solid tumor or lymphoma), for whom chemotherapy is scheduled for at least 12 weeks and have life expectancy >6 months and performance status ECOG 0–2,are treated with Darbepoetin alfa 150 mg per week subcutaneously for at least 12 weeks. Full blood count should be tested at least every 2 weeks and biochemistry every 4 weeks. QoL was assessed before and after treatment using the FACT-An (Functional Assessment of Cancer Therapy-Anemia) scale. Primary endpoint is the correction of anemia (Hb value above 12 g/dl). Frequency of the demographic and clinical characteristics were reported for the categorical variables, while mean and standard deviation were reported for continuous variables, such as age and Hb levels. Results: Fifty-six (56) patients entered the study, 66% of them female. Median age was 64 years. The more common cancers were colorectal (26.8%) ovarian (17.9%), breast (16.1%), lung (12.5%), and bladder (8.9%). Two thirds of the patients had not received previous chemotherapy. A statistically significant increase for Hb was found between week 0 and 12 [1.48; 95% CI 1.07–1.88; p < 0.001]. The increase was significant from 3rd week onwards. There was no evidence of significant difference in any of the QoL components or for significant change in mean fatigue sub-scale (fatigue, non-fatigue), between the two assessments. Conclusions: Darbepoetin alfa given at 150 mg per week subcutaneously to cancer patients under chemotherapy appears to correct anaemia, but has not positive impact on QoL, within the limits of the sample size of this study. No significant financial relationships to disclose.