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‹ Tue · 21 Apr 2026
Liquid biopsy-guided treatment in Phase 3 RCT

Mutation-Specific Response to Ramucirumab in EGFR-Mutated Metastatic NSCLC: Insights From Circulating Cell-Free DNA Profiling (Liquid Biopsy Japan Addendum of RELAY Phase 3 Randomized Study)

Blood tests can now identify which lung cancer patients benefit most from a specific targeted drug, guiding personalized treatment decisions.

This addendum to the RELAY Phase 3 RCT applies circulating cell-free DNA profiling to EGFR-mutated metastatic NSCLC patients to identify which mutation profiles benefit most from ramucirumab. The findings demonstrate clinical utility of liquid biopsy in guiding targeted therapy decisions in a validated Phase 3 setting.

What the study was

Study design
Phase 3 RCT addendum / biomarker sub-study
Population
EGFR-mutated metastatic NSCLC patients (RELAY Phase 3 trial, Japan cohort)
Category
Early Detection
Maturity
Potentially Practice-Changing
Journal
JTO Clinical and Research Reports

Why it surfaced

Phase 3 RCT addendum with cfDNA profiling enabling mutation-specific treatment selection in EGFR NSCLC; directly addresses liquid biopsy translation to clinical practice.

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