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Anti-Drug Antibodies Assay

Immunogenicity testing of therapeutic proteins is an essential step of the drug development process. Anti-Drug antibodies (ADA) may lead to allergic reactions, altered pharmacokinetic and reduced efficacy.
The evaluation of ADA is:
•  of regulatory importance
•  the most frequently used endpoint to study unwanted immunogenicity in clinical studies and post marketing clinical monitoring.
The evaluation of ADA is a multi-step analytical approach including a broad range of different assay formats and methodologies. A complete analytical assessment of ADAs includes the following steps:
•  Screening assays detects all antibodies binding to the biopharmaceutical in serum samples of animals or patients.
•  Positive evaluated samples can be further characterized for the presence of neutralizing antibodies (NAB) against the drug. Assay formats are cell based techniques with carefully selected biological readouts that correspond to the mode of action of the drug (potency).
Development services provided by Creative Diagnostics
Screening assays
•  Bridging ELISA
•  Direct ELISA (including quantitation IgG, IgM, IgA and IgE)
•  Competitive ELISA
Characterization assays
Cell based neutralizing antibody assays
Preparation of specific reagents
•  Conjugation of drug molecules to fluorochromes or biotin
•  Generation of ADAs/positive controls for assay development
Assay optimization
•  Drug tolerance
•  Sensitivity
•  Specificity
•  Precision
Creative Diagnostics offers its bioconjugation and assay development expertise free of charge to any user. Creative Diagnostics can also develop immunogenicity methods in ELISA or rapid assay format for clients who prefer to do so.

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Tel: 1-631-624-4882
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Tel: 44-207-097-1828
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