期刊
BIOANALYSIS
卷 3, 期 23, 页码 2627-2636出版社
FUTURE SCI LTD
DOI: 10.4155/BIO.11.273
关键词
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资金
- Genentech
Background: Generally, immunogenicity assessment strategies follow this assay triage schema: screen -> confirm -> titer. Each requires the determination of a threshold value (cutpoint) for decision making. No guidance documents exist for the determination of a specific titration assay cutpoint. The default practice is to use the screening assay cutpoint, frequently leading to controls or samples not reaching this cutpoint. We propose a method for determination of a titration cutpoint based upon the variance of the negative-control sample. Results: Positive-control samples that did not cross a screening cutpoint did cross the titer cutpoint, albeit generating slightly lower titer values. Conclusion: Our approach is consistent with the statistical methods currently recommended for the screening and confirmatory assay cutpoints and is operationally simple and efficient.
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