biomarker
A measurable biological indicator of normal biological processes, pathogenic processes, or pharmacologic responses to therapeutic intervention.
Full Definition
Biomarkers in cardiovascular research serve as objective indicators of cardiac function, injury, or therapeutic response that can be measured accurately and reproducibly. Common cardiovascular biomarkers include troponins for myocardial injury, natriuretic peptides (BNP, NT-proBNP) for heart failure, and inflammatory markers like C-reactive protein. Biomarkers may serve as surrogate endpoints in clinical trials when they reliably predict clinical outcomes, though regulatory acceptance requires extensive validation. Novel biomarkers undergo rigorous analytical and clinical validation, including assessment of sensitivity, specificity, and prognostic value across diverse patient populations.
Usage
Usage note: Write as one word; distinguish from surrogate endpoints, which require validation for regulatory acceptance.
In Context
- "High-sensitivity troponin served as the primary biomarker for detecting myocardial injury." — Methodology section
- "The novel biomarker demonstrated superior prognostic value compared to traditional risk factors." — Biomarker validation study