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Non-clinical safety studies on biosimilar recombinant human erythropoietin
Authors:Parnham Michael J  Schindler-Horvat Janice  Kozlovi? Marija
Institution:PLIVA Research Institute Ltd, Zagreb, Croatia. michael.y.parnham@gsk.com
Abstract:Recombinant human erythropoietin (rhEPO) is widely used for the treatment of patients with anaemia and its loss of patent protection has stimulated the development of cheaper biosimilar products. However, the quality and comparability of rhEPO products recently marketed in several developing countries is questionable. Paying attention to quality in its isolation, purification and analytical characterization, it has been possible to produce a biosimilar rhEPO that is comparable with the originator product. Non-clinical safety testing was initially carried out in the absence of a regulatory framework and contributed to the receipt of marketing approval for biosimilar rhEPO in Eastern Europe. Subsequently, this non-clinical testing was extended to take into account the recent guidelines for similar biological medicinal products published by the European regulatory authorities, which were markedly influenced by the intervening occurrence of pure red cell aplasia in patients taking what proved to be an impure rhEPO product. This Mini Review discusses the challenges faced, approaches taken and lessons learned in developing a biosimilar rhEPO product, both before and after the publication of the regulatory guidelines.
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