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        Translational potential of a mouse in-vitro bioassay in predicting gastrointestinal adverse drug reactions in phase 1 clinical trials

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        907056.pdf (PDF, 565Kb)
        Author
        Keating, Christopher
        Ewart, Lorna
        Grundy, Luke
        Valentin, Jean-Pierre
        Grundy, David
        Attention
        2299/15878
        Abstract
        Background: Motility-related gastrointestinal adverse drug reactions (GADRs) such as diarrhoea and constipation are a common and deleterious feature associated with drug development. Novel biomarkers of GI function are therefore required to aid decision making on the gastrointestinal liability of compounds in development. Methods: Fifteen compounds associated with or without clinical GADRs were used to assess the ability of an in vitro colonic motility bioassay to predict motility-related GADRs. Compounds were examined in a blinded fashion for their effects on mouse colonic peristaltic motor complexes in vitro. For each compound concentration-response relationships were determined and the results compared to clinical data. Compounds were also assessed using gastrointestinal transit measurements obtained using an in vivo rat charcoal meal model. Key Results: Within a clinically relevant dosing range, the in vitro assay identified 5 true and 3 false positives, 4 true and 3 false negatives, which gave a predictive capacity of 60%. The in vivo assay detected 4 true and 4 false positives, 4 false and 3 true negatives, giving rise to a predictive capacity for this model of 47%. Conclusion & Inferences: Overall these results imply that both assays are poor predictors of GADRs. Further analysis would benefit from a larger compound set, but the data shows a clear need for improved models for use in safety pharmacology assessment of GI motility
        Publication date
        2014-07
        Published in
        Neurogastroenterology and Motility
        Published version
        https://doi.org/10.1111/nmo.12349
        Other links
        http://hdl.handle.net/2299/15878
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