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Scientific article
English

Glycosylation of biosimilars: Recent advances in analytical characterization and clinical implications

Published inAnalytica Chimica Acta, vol. 1089, p. 1-18
Publication date2019
Abstract

Over the past few years, loss of patent protection for blockbuster monoclonal antibody (mAb) drugs has caused a significant shift in the pharmaceutical industry towards the development of biosimilar products. As a result, multiple biosimilar mAbs are becoming available for a single originator drug. As opposed to small-molecular drugs, protein biopharmaceuticals do not have fully defined and reproducible structures, making it impossible to create identical copies. Therefore, regulators demand biosimilar sponsors to demonstrate similarity with the reference product to prevent safety and efficacy issues with the proposed product. Protein glycosylation is considered a crucially important quality attribute, because of its major role in immunogenicity and clinical efficacy of therapeutic proteins. However, the intrinsic biological variability of glycan structures creates a significant challenge for the current analytical platforms. In this review, we discuss the importance of glycan characterization on therapeutic proteins, with a particular focus on the analytical techniques applied for glycan profiling of biosimilar mAb products. In addition, we present a case study on infliximab biosimilars to illustrate the potential clinical implications of differences in glycan profile between originator and biosimilar mAb products.

Keywords
  • Monoclonal antibodies
  • Biosimilars
  • Glycosylation
  • Analytical characterization
  • Clinical implications
Citation (ISO format)
DUIVELSHOF, Bastiaan et al. Glycosylation of biosimilars: Recent advances in analytical characterization and clinical implications. In: Analytica Chimica Acta, 2019, vol. 1089, p. 1–18. doi: 10.1016/j.aca.2019.08.044
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Article (Published version)
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ISSN of the journal1873-4324
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