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Updated: Feb 14, 2026
05:26
A Standardized Liquid Biopsy Preanalytical Protocol for Downstream Circulating-Free DNA Applications
Published on: September 16, 2022
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Are liquid biopsies a surrogate for tissue EGFR testing?
J W Goldman1, Z S Noor1, J Remon2
1David Geffen School of Medicine at University of California Los Angeles, Los Angeles, USA.
Summary
Liquid biopsies offer a minimally invasive alternative to tissue genotyping for detecting EGFR mutations in non-small cell lung cancer. This approach aids in treatment decisions for advanced lung cancer patients.
Area of Science:
- Oncology
- Molecular Biology
- Genomics
Background:
- Advanced non-small-cell lung cancer (NSCLC) treatment is increasingly guided by molecular profiling.
- Epidermal Growth Factor Receptor (EGFR) mutations are common targetable alterations in NSCLC.
- Accurate identification of sensitizing and resistance EGFR mutations is crucial for effective treatment strategies.
Purpose of the Study:
- To review liquid biopsy techniques for detecting EGFR mutations in NSCLC.
- To assess the clinical utility of liquid biopsies for treatment decisions.
- To summarize methods for identifying sensitizing and resistance EGFR mutations.
Main Methods:
- Review of current literature on liquid biopsy technologies.
- Analysis of the application of liquid biopsies for EGFR mutation detection.
- Evaluation of how liquid biopsy results inform treatment choices.
Main Results:
- Liquid biopsies provide a feasible alternative to traditional tissue genotyping.
- These blood-based tests can detect both sensitizing and acquired resistance EGFR mutations.
- The results can guide therapeutic interventions in advanced NSCLC.
Conclusions:
- Liquid biopsies are a valuable tool for molecular profiling in NSCLC.
- They overcome limitations associated with tissue biopsies, such as insufficient tissue availability.
- Liquid biopsies facilitate personalized treatment strategies for NSCLC patients based on EGFR mutation status.
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