On the glycosylation aspects of biosimilarity

Hajba, László and Szekrényes, Ákos and Borza, Beáta and Guttman, András (2018) On the glycosylation aspects of biosimilarity. DRUG DISCOVERY TODAY, 23 (3). pp. 616-625. ISSN 1359-6446

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Abstract

The recent expiration of several protein therapeutics opened the door for biosimilar development. Biosimilars are biologic medical products that are similar but not identical copies of already-authorized protein therapeutics. Critical quality attributes (CQA), such as post-translational modifications of recombinant biotherapeutics, are important for the clinical efficacy and safety of both the innovative biologics and their biosimilar counterparts. Here, we summarize biosimilarity CQAs, considering the regulatory guidelines and the statistical aspects (e.g., biosimilarity index) and then discuss glycosylation as one of the important attributes of biosimilarity. Finally, we introduced the ‘Glycosimilarity Index’, which is based on the averaged biosimilarity criterion.

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