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Updated: Jun 3, 2026

Preparation of Peripheral Blood Mononuclear Cell Pellets and Plasma from a Single Blood Draw at Clinical Trial Sites for Biomarker Analysis
Published on: March 20, 2021
Integrating biomarkers in clinical trials
Marc Buyse1, Stefan Michiels, Daniel J Sargent
1International Institute for Drug Development, 30 Avenue Provinciale, 1340 Louvain-la-Neuve, Belgium. marc.buyse@iddi.com
Molecular biomarkers are crucial for personalized medicine in clinical trials. This article details prognostic and predictive biomarkers and trial designs for validating their use in oncology.
Area of Science:
- Oncology
- Clinical Pharmacology
- Biostatistics
Background:
- The rise of targeted therapies necessitates precise patient stratification in clinical trials.
- Molecular biomarkers are increasingly vital for both clinical research and practice.
- Distinguishing between prognostic and predictive biomarkers is essential for effective trial design.
Purpose of the Study:
- To review the role of prognostic and predictive biomarkers in clinical trials.
- To discuss specific clinical trial designs (Phase II and III) for biomarker validation.
- To illustrate biomarker-based trial strategies using oncology examples.
Main Methods:
- Review of contemporary clinical trial designs.
- Focus on Phase II and III trial methodologies.
- Case examples from oncology research.
Main Results:
- Biomarker validation is key to establishing targeted therapy efficacy.
- Specific trial designs facilitate the evaluation of biomarkers.
- Oncology trials provide practical examples of biomarker application.
Conclusions:
- Biomarker-driven clinical trials are fundamental to personalized oncology.
- Prognostic and predictive biomarkers guide treatment selection and patient management.
- Validated biomarkers enhance the precision and efficiency of therapeutic development.
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