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European Pharmaceutical Contractor

Surrogate Force

Tomasz Burzykowski at MSOURCE Medical Development looks at surrogate endpoints in drug development as a method for accumulating study data and streamlining trial design

The development of a new medicine is a long and complex process. The candidate drug must pass through a series of phases of clinical trials, in which the efficacy and safety of the drug have to be rigorously established. The longer and the more complex the trials, the longer the time needed for bringing the drug to the market.

CLINICAL ENDPOINTS

One of the most important factors influencing the duration and complexity of a clinical trial is the choice of the endpoint, which will be used to assess the efficacy of the treatment. To this aim, clinical endpoints are used. A clinical endpoint is a characteristic or variable that reflects how a patient feels, functions or survives. Two main criteria to select the endpoint to use in a clinical trial are its sensitivity to detecting treatment effects, and its clinical relevance to goals of the study. It often happens, however, that the most sensitive and relevant clinical endpoint – the ‘true’ endpoint – might be difficult to use in a trial. This can happen if the measurement of the true endpoint:


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Tomasz Burzykowski is a Senior Biostatistician at MSOURCE Medical Development. He obtained a PhD in Biostatistics at the Hasselt University, Belgium, where he also currently holds an appointment as Associate Professor of Biostatistics and Bioinformatics. Before coming to Belgium in 1998, he worked for six years at the Institute of Oncology in Warsaw, Poland, where he established and headed a clinical trials office. Tomasz’s expertise as a biostatistician includes clinical trials methodology, survival analysis, linear mixedeffects models and meta-analysis. He is an author and a co-author of methodological papers on these topics, as well as of numerous articles on application of statistical methods in various disease areas.
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Tomasz Burzykowski
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