Management of chemotherapy‐induced anemia (CIA) with biosimilar epoetin alfa (Binocrit) in patients with colorectal cancer (CC): An interim analysis of an ongoing French national observational study (The OncoBOS study).

Abstract

742 Background: OncoBOS is a prospective, non-interventional study describing Binocrit use in routine practice in France in patients receiving chemotherapy treatment (CT) for solid tumors, lymphoma, or myeloma. This interim sub-analysis focuses on patients with CC, receiving usual chemotherapeutic agents. Methods: Patients ≥18 years with CC, CIA, and eligible for treatment with Binocrit were included in this analysis. Patients characteristics, data on CIA and its management, and predominant factors considered by the physician in prescribing Binocrit were recorded at baseline (BL), 3-4 weeks and 12 (±1) weeks later. Hemoglobin (Hb) outcomes assessed included the proportion of patients achieving a Hb increase ≥1 and ≥2 g/dL, and the mean Hb change from BL. Results: 96 patients with CC (51 males [53.1%], mean age 68.5 years) from 28 sites were recruited from September 2011 to April 2014. Mean and median BL Hb levels were 9.9 g/dL and 10 g/dL, respectively. The mean increase in Hb level was 1.2 g/dL after 1 month and 1.7 g/dL after 3 months (p<0.001 vs. BL) of Binocrit treatment. A Hb increase ≥1 g/dL was achieved by 56.8% of patients at week 3-4 and 77.6% at week 12; a Hb increase ≥2 g/dL was achieved by 17.9% and 47.4% of patients at the same time points. Patients received a median dose of 30,000 IU Binocrit once weekly. Four of the 96 patients (4.2%) required a dose increase. Transfusion rates remained low at 2.1% and 1.1% at week 3-4 and week 12, respectively. Oral and intravenous (IV) iron supplementation rates were low: oral iron was received by 4.2% and 4.7% of patients at week 3-4 and week 12, respectively; 15.6% and 9.3% of patients received IV supplementation at the same time points. Physicians considered quality of life (49%), fatigue (24%), and avoidance of blood transfusion (15.6%) as predominant factors in the rationale for CIA management. Over the treatment period, no treatment-related adverse reaction was recorded. Conclusions: This sub-analysis indicates that Binocrit, used in routine practice, is effective and well tolerated for the treatment of CIA in patients with CC, whatever CT received.