1. The Importance of Real-World Data in Evaluating the Safety of Biosimilars: A Descriptive Study of Clinical Practice in an Oncohematological Italian Population.
- Author
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Urru, Silvana A. M., Mayer, Flavia, Spila Alegiani, Stefania, Paoloni, Francesca, Guella, Anna, Murru, Roberta, Bucaneve, Giampaolo, Formoso, Giulio, Racanelli, Vito, Ferrarini, Isacco, Fozza, Claudio, Longo, Giuseppe, Musicco, Felice, and Campomori, Annalisa
- Subjects
CHRONIC lymphocytic leukemia ,PATIENT safety ,NON-Hodgkin's lymphoma ,DRUG side effects ,RESEARCH funding ,SCIENTIFIC observation ,PRESUMPTIONS (Law) ,RITUXIMAB ,DESCRIPTIVE statistics ,LONGITUDINAL method ,DRUG efficacy ,RESEARCH ,BIOSIMILARS ,MEDICAL care costs - Abstract
Simple Summary: This study analyzes the use of rituximab (RTX) in the daily clinical practice of several Italian oncohematology centers, with a particular focus on the adoption of biosimilars. The results show that only a minority of patients (22%) switched between different biosimilars, while the majority continued treatment with the biosimilars Rixathon and Truxima. This finding suggests that the proactive sharing of guidelines between regulators and prescribers, from the outset, may be an effective strategy to further promote the adoption of biosimilars. This approach could be particularly useful in those areas where the use of biosimilars is still lower than the national average, helping to free up economic resources that could be redirected towards other healthcare opportunities. The clinical safety and efficacy of rituximab biosimilars compared to the reference rituximab (Mabthera) have been well established in randomized trials. However, concerns persist regarding the safety of changing from the reference product to biosimilars, and particularly between different biosimilars. This prospective multicenter observational study was conducted in 13 oncohematology units of eight Italian regions. The study included 800 patients with non-Hodgkin lymphoma (NHL) or chronic lymphocytic leukemia (CLL) who received rituximab between March 2018 and June 2022. To minimize survivorship bias, only newly diagnosed patients (i.e., those without prior rituximab treatment) were included in the analysis of adverse drug reactions (ADRs). Thus, this study focused on 505 incident cases (79.8% of the initial cohort) from 13 centers. A total of 3681 rituximab infusions were administered, and 16.8% of the patients experienced at least one ADR. These were observed most frequently during the first infusion (44 patients, 52%) and the second infusion (17 patients, 20%). The most frequent reactions were general disorders and administration site conditions (n. 50, 8% serious). These findings support the clinical safety of rituximab biosimilars and suggest that switching between biosimilars does not increase the risk of adverse events. This evidence may alleviate concerns about biosimilar use, potentially leading to broader acceptance and reduced healthcare costs. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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