Comparable efficacy and safety observed in patients switched to biosimilar CT-P10

04:26 EDT 22 Sep 2017 | Generics and Biosimilars Initiative

Rituximab is a monoclonal antibody that targets the CD20 protein that is primarily found on B lymphocytes. Through depletion of CD20-positive B cells in the peripheral blood and bone marrow, rituximab is effective for treating some haematological malignancies and immune-mediated diseases such as rheumatoid arthritis (RA). CT-P10 (Truxima) is a biosimilar of the rituximab reference product. It is the first biosimilar to receive market authorization from the European Medicines Agency and is approved in Europe for all indications for which RTX is licensed [1]. A phase I randomized controlled trial (RCT) in patients with RA demonstrated pharmacokinetic equivalence of CT-P10 and reference rituximab over 24 weeks of treatment [2], and comparable efficacy and safety of these two drugs has recently been demonstrated over an extended treatment duration from the same trial [3]. With biosimilars typically being less expensive than originator biologicals [4], it is of interest to know whether patients treated with an originator biological can be switched to a biosimilar to save healthcare costs and increase access without affecting treatment efficacy or safety. An open-label extension (OLE) study that enrolled patients who had completed the aforementioned phase I RCT has been published [5]. The study has demonstrated comparable efficacy and safety profiles in patients who switched from the reference rituximab to CT-P10 and those maintained on CT-P10 throughout treatment [5].

Original Article: Comparable efficacy and safety observed in patients switched to biosimilar CT-P10


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