Biosimilars Today, Pfizer announced it is introducing three new biosimilars, Zirabev (bevacizumab-bvzr) referencing Avastin, Ruxience (rituximab-pvvr) referencing Rituxan, and Trazimera (trastuzumab-qyyp) referencing Herceptin, at a substantially discounted price to the originator product in the USA, which has been a notoriously difficult market for copy biologics to enter. 23 January 2020