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Bridging the gap:a review of dose investigations in paediatric investigation plans

Hampson, Lisa and Herold, Ralf and Posch, Martin and Saperia, Julia and Whitehead, Anne (2014) Bridging the gap:a review of dose investigations in paediatric investigation plans. British Journal of Clinical Pharmacology, 78 (4). pp. 898-907. ISSN 0306-5251

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    Abstract

    Aims In the EU, development of new medicines for children should follow a prospectively agreed paediatric investigation plan (PIP). Finding the right dose for children is crucial but challenging due to the variability of pharmacokinetics across age groups and the limited sample sizes available. We examined strategies adopted in PIPs to support paediatric dosing recommendations to identify common assumptions underlying dose investigations and the attempts planned to verify them in children. Methods We extracted data from 73 PIP opinions recently adopted by the Paediatric Committee of the European Medicines Agency. These opinions represented 79 medicinal development programmes and comprised a total of 97 dose investigation studies. We identified the design of these dose investigation studies, recorded the analyses planned and determined the criteria used to define target doses. Results Most dose investigation studies are clinical trials (83 of 97) that evaluate a single dosing rule. Sample sizes used to investigate dose are highly variable across programmes, with smaller numbers used in younger children (< 2 years). Many studies (40 of 97) do not pre-specify a target dose criterion. Of those that do, most (33 of 57 studies) guide decisions using pharmacokinetic data alone. Conclusions Common assumptions underlying dose investigation strategies include dose proportionality and similar exposure−response relationships in adults and children. Few development programmes pre-specify steps to verify assumptions in children. There is scope for the use of Bayesian methods as a framework for synthesizing existing information to quantify prior uncertainty about assumptions. This process can inform the design of optimal drug development strategies.

    Item Type: Article
    Journal or Publication Title: British Journal of Clinical Pharmacology
    Additional Information: © 2014 The Authors. British Journal of Clinical Pharmacology published by John Wiley & Sons Ltd on behalf of The British Pharmacological Society. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
    Uncontrolled Keywords: Bayesian methods ; dose investigations ; extrapolation ; modelling ; simulation
    Subjects:
    Departments: Faculty of Science and Technology > Mathematics and Statistics
    ID Code: 71855
    Deposited By: ep_importer_pure
    Deposited On: 24 Nov 2014 09:46
    Refereed?: Yes
    Published?: Published
    Last Modified: 12 Dec 2017 05:49
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/71855

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