The biomarker paradigm: between diagnostic efficiency and clinical efficacy

Area of Science:

• Biomedical Science
• Clinical Laboratory Science
• Health Services Research

Background:

• Biomarker research interest is rapidly increasing.
• Laboratory test utility is defined by diagnostic efficiency (accuracy) and clinical efficacy (outcome improvement).
• Current research predominantly emphasizes diagnostic efficiency over clinical efficacy.

Purpose of the Study:

• To highlight the critical need for a paradigm shift in laboratory testing.
• To advocate for a focus on clinical efficacy and patient-centered outcomes.
• To propose a framework for improving the clinical utility of laboratory tests.

Main Methods:

• Review of current practices in biomarker research and laboratory test evaluation.
• Conceptual analysis differentiating diagnostic efficiency from clinical efficacy.
• Proposal of the "six R" paradigm for enhancing clinical efficacy.

Main Results:

• The majority of studies prioritize diagnostic accuracy (efficiency) over demonstrated clinical benefit (efficacy).
• This imbalance is unsustainable given limited healthcare resources.
• A new focus on clinical efficacy is essential for meaningful healthcare improvements.

Conclusions:

• A paradigm shift is necessary, moving from analytically perfect tests to clinically relevant ones.
• The laboratory community must align research with clinician needs and patient outcomes.
• The "six R" paradigm (Right test, method, time, patient, cost, outcome) offers a practical approach to enhance clinical efficacy.