Biomarkers—A General Review

Jeffrey K. Aronson1, Robin E. Ferner2

1 Centre for Evidence Based Medicine, Nuffield Department of Primary Care Health Sciences, Radcliffe Infirmary, Oxford, 2 School of Medicine, University of Birmingham, Birmingham
Publication Name:  Current Protocols in Pharmacology
Unit Number:  Unit 9.23
DOI:  10.1002/cpph.19
Online Posting Date:  March, 2017
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A biomarker is a biological observation that substitutes for and ideally predicts a clinically relevant endpoint or intermediate outcome that is more difficult to observe. The use of clinical biomarkers is easier and less expensive than direct measurement of the final clinical endpoint, and biomarkers are usually measured over a shorter time span. They can be used in disease screening, diagnosis, characterization, and monitoring; as prognostic indicators; for developing individualized therapeutic interventions; for predicting and treating adverse drug reactions; for identifying cell types; and for pharmacodynamic and dose‐response studies. To understand the value of a biomarker, it is necessary to know the pathophysiological relationship between the biomarker and the relevant clinical endpoint. Good biomarkers should be measurable with little or no variability, should have a sizeable signal to noise ratio, and should change promptly and reliably in response to changes in the condition or its therapy. © 2017 by John Wiley & Sons, Inc.

Keywords: adverse drug reactions; biomarkers; drug discovery; drug development; diagnosis; monitoring drug therapy; screening; surrogate endpoints; surrogate markers

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Table of Contents

  • Introduction
  • History
  • Definitions
  • Advantages of Biomarkers
  • Uses of Biomarkers
  • Taxonomies of Biomarkers
  • Criteria for Useful Biomarkers
  • Identifying Biomarkers
  • Validation of Biomarkers
  • Pitfalls and Problems Associated with the use of Biomarkers
  • Choosing the Best Biomarker Test
  • Practical Matters
  • A Proposed Definition
  • Conclusions
  • Literature Cited
  • Figures
  • Tables
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Literature Cited

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