Journal
PHARMACEUTICAL STATISTICS
Volume 9, Issue 3, Pages 201-206Publisher
WILEY
DOI: 10.1002/pst.442
Keywords
bridging study; ethnic effect; multi-regional trials; similarity
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Funding
- Food and Drug Administration, Department of Health, Taiwan
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In recent years, global collaboration has become a conventional strategy for new drug development. To accelerate the development process and to shorten approval time, the design of multi-regional trials incorporates subjects from many countries around the world under the same protocol. After showing the overall efficacy of a drug in all global regions, one can also simultaneously evaluate the possibility of applying the overall trial results to all regions and subsequently support drug registration in each of them. Recently, the trend for simultaneous clinical development in Asian countries being undertaken simultaneously with clinical trials conducted in Europe and the United States has been rapidly rising. In this paper, proposals of statistical consideration to multi-regional trials are provided. More specifically, three aspects are addressed: the definition of the 'Asian region,' the consistency criterion between the 'Asian region' and the overall regions, and the sample size determination for the multi-regional trial. Copyright (C) 2010 John Wiley & Sons, Ltd.
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