Meyer., Robina M., Berger, Lukas, Nerkamp, Joerg, Scheler, Stefan, Nehring, Sebastian and Friess, Wolfgang (2021) Identification of monoclonal antibody variants involved in aggregate formation – Part 2: Hydrophobicity variants. European Journal of Pharmaceutics and Biopharmaceutics, 160 (March ). pp. 134-142. ISSN 18733441

Abstract

Monoclonal antibodies (mAbs) are valuable tools both in therapy and in diagnostic. Their tendency to aggregate is a serious concern. Since a mAb drug substance (DS) is composed of different variants, it is important for manufacturers to know the behavior and stability not only of the mAb as a whole, but also of the variants contained in the product. We present a method to separate hydrophobicity variants of a mAb and subsequently analyzed these variants for stability and aggregation propensity. We identified a potentially aggregation prone hydrophilic variant which is interrelated with another previously identified aggregation prone acidic charge variant. Additionally, we assessed the risk posed by the aggregation prone variant to the DS by spiking hydrophobicity variants into DS and did not observe an enhanced aggregation propensity. Thus we present an approach to separate, characterize and analyze the criticality of aggregation prone variants in protein DS which is a step forward to further assure drug safety.

Item Type:	Article
Keywords:	mAb hydrophobicity variants Protein aggregation Protein stability Semi-preparative HIC
Date Deposited:	21 Apr 2021 00:45
Last Modified:	21 Apr 2021 00:45
URI:	https://oak.novartis.com/id/eprint/43767