Valid Biomarker Valid_Biomarker Valid Biomarker C2349100 A biomarker that is measured in an analytical test system with well established performance characteristics and for which there is an established scientific framework or body of evidence that elucidates the physiologic, toxicologic, pharmacologic, or clinical significance of the test results. The classification of biomarkers is context specific. Likewise, validation of a biomarker is context-specific and the criteria for validation will vary with the intended use of the biomarker. The clinical utility (e.g., predict toxicity, effectiveness or dosing) and use of epidemiology/population data (e.g., strength of genotype-phenotype associations) are examples of approaches that can be used to determine the specific context and the necessary criteria for validation. (From: Pharmacogenomic Data Submissions, FDA Guidance for Industry.) Valid Biomarker Indicator, Reagent, or Diagnostic Aid C68763 biomarker