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The European Bioanalysis Forum recommendation on establishing appropriate drug tolerance levels in antidrug antibody
Kyra J Cowan1, Lysie Champion2, Daniel Dyer3
1Merck KGaA, Research & Development, Drug Metabolism & Pharmacokinetics New Biological Entities, Darmstadt, 64293, Germany.
Abstract:
The European Bioanalysis Forum, in collaboration with several key industry stakeholders, has recently led discussions that address international immunogenicity guidance documents, specifically the three tier approach for immunogenicity testing strategies, after more than 20 years of experience with biotherapeutics. As part of this, the strategy and methods used to assess drug tolerance across all immunogenicity assays are challenged, emphasizing that bioanalytical scientists need to consider the context-of-use of each assay. Here, recommendations for drug tolerance assessments, driven by strong scientific rationale and subject to reevaluation as needed, are provided. This includes carefully considering the drug and positive control concentrations considered to be appropriate and which tiers are most relevant for performing drug tolerance assessments.
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