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Updated: Jun 13, 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
Use of pharmacokinetic/pharmacodynamic biomarkers to support rational cancer drug development
Debashis Sarker1, Simon Pacey, Paul Workman
1Signal Transduction & Molecular Pharmacology Team, Cancer Research UK Centre for Cancer Therapeutics, The Institute of Cancer Research, Haddow Laboratories, Sutton, Surrey, SM2 5NG, UK.
Abstract:
The process of drug development in oncology has struggled to alter at a pace in keeping with the rapid discovery and testing of agents that act on a wide variety of molecular targets. The rational development of such agents requires an understanding of drug effect(s) on their purported target. It is likely that testing these drugs in a framework designed to examine cytotoxic agents will fail to establish their full potential. We discuss how data gained from biomarker investigation might impact on drug development and provide examples that highlight the development, validation and use of pharmacokinetic, and especially pharmacodynamic biomarkers as drug development moves from the laboratory into clinical testing. The challenges of performing assays to satisfy regulatory requirements have been the subject of much debate. We recommend the implementation of appropriate, fit-for-purpose biomarkers in clinical trials of all new cancer drugs.
Insights
Biomarker data is crucial for advancing oncology drug development. Implementing pharmacokinetic and pharmacodynamic biomarkers in clinical trials ensures the full potential of novel cancer drugs is realized.
Area of Science:
- Oncology
- Pharmacology
- Biomarker Research
Background:
- Drug development in oncology faces challenges keeping pace with molecular target discovery.
- Current drug development frameworks may not adequately assess novel targeted agents.
- Understanding drug effects on targets is essential for rational drug development.
Purpose of the Study:
- To discuss the impact of biomarker data on oncology drug development.
- To highlight the role of pharmacokinetic and pharmacodynamic biomarkers.
- To advocate for the use of fit-for-purpose biomarkers in clinical trials.
Main Methods:
- Review of current practices in oncology drug development.
- Discussion of biomarker investigation, development, validation, and use.
- Examination of pharmacokinetic and pharmacodynamic biomarker applications.
- Consideration of regulatory assay challenges.
Main Results:
- Biomarker data can significantly impact drug development strategies.
- Pharmacokinetic and pharmacodynamic biomarkers are vital for clinical translation.
- Existing cytotoxic agent frameworks may limit the assessment of targeted therapies.
Conclusions:
- Biomarker investigation is essential for the rational development of novel cancer drugs.
- Pharmacokinetic and pharmacodynamic biomarkers should be integrated into clinical trials.
- Implementing appropriate biomarkers will help realize the full potential of new oncology agents.
- Addressing regulatory challenges for biomarker assays is critical.
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