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  • Title: Pharmacokinetic, pharmacodynamic and immunogenicity comparability assessment strategies for monoclonal antibodies.
    Author: Putnam WS, Prabhu S, Zheng Y, Subramanyam M, Wang YM.
    Journal: Trends Biotechnol; 2010 Oct; 28(10):509-16. PubMed ID: 20691488.
    Abstract:
    Regulatory guidance stipulates that comparability assessment is required to support manufacturing process changes during the development of a biological product or post-approval. However, strategies for assessing the comparability of pre- and post-change materials are still evolving. A hierarchical risk-based approach is recommended, starting with analytical testing to ensure quality, followed by biological characterization and, if needed, in vivo pharmacokinetic (PK), PK-pharmacodynamic (PD), safety and/or efficacy studies. The need for an in vivo study and the type of study required depend on the magnitude and the potential impact of the changes and the timing in the development process. This review discusses factors affecting the PK, PD and immunogenicity of monoclonal antibodies, and provides guidance for determining non-clinical and clinical comparability assessment strategies.
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