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  • Title: Generic Anti-PEG Antibody Assay on ProterixBio's (Formerly BioScale) ViBE Platform Shows Poor Reproducibility.
    Author: Chilewski SD, Shields J, Mora JR, Myler H.
    Journal: AAPS J; 2018 Apr 24; 20(3):65. PubMed ID: 29691672.
    Abstract:
    PEGylation is a modification commonly used to increase the half-life of therapeutic proteins. The strategy for immunogenicity testing of these compounds should include methods to detect both anti-protein and anti-PEG antibodies. We previously reported a method for the detection of anti-PEG antibodies using ProterixBio's (formerly BioScale) acoustic membrane microparticle (AMMP) technology. Our initial method development work showed the assay was capable of detecting antibodies in human serum with a sensitivity of 1 μg/mL with good reproducibility (CV < 7%). Since the publication of this initial paper, additional experimentation was performed in an effort to validate the assay for support of clinical sample analysis. This additional data indicate that the method has high variability (CV% > 20) and is unsuitable to support clinical sample analysis.
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