Abstract
IntroductionA medicine’s acceptability is likely to have significant impact on pediatric adherence. The importance is underlined in EMA and FDA guidance on this topic where investigation of acceptability is stated as a regulatory expectation. Demonstrating acceptability can be challenging given there is no globally recognized definition and no standardized testing methodology or assessment criteria. Palatability and swallowability are generally recognized as important elements of acceptability, and this work proposes a definition of acceptability using these elements to give a composite endpoint for acceptability for pediatric subjects across all age ranges.MethodsThis composite acceptability endpoint is based on validated assessment methods for swallowability and palatability in children of different age groups using different galenic placebo formulations, in line with criteria proposed by EMA for assessing acceptability in children from newborn to 18 years of age. Data from two studies investigating mini-tablets, oblong tablets, orodispersible films, and syrup were analyzed to establish the validity, expediency, and applicability of the suggested composite acceptability assessment tool.ResultsThe new composite endpoint is an efficient and suitable way to distinguish preferences of oral formulations: Mini-tablets and oblong tablets had significantly better acceptability than syrups and orodispersible films.ConclusionSince the suggested acceptability criteria takes both swallowability and palatability into account as composite endpoint, it is highly sensitive to detect acceptability differences between oral formulations. It is a well-defined valid approach, which meets regulatory requirements in an appropriate and comprehensive manner and may in future serve as a pragmatic, standardized method to assess and compare acceptability of pediatric formulations with active substances.
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