ArticleTargeted oncology2021
The Allele Frequency of EGFR Mutations Predicts Survival in Advanced EGFR T790M-Positive Non-small Cell Lung Cancer Patients Treated with Osimertinib.
Article in Targeted oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
17 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.
- The prognostic role of circulating DNA markers in patients with lung malignancies: a systematic review and meta-analysis.Biomarkers in medicine · 2025Pooled it
- EGFR G719X + S768I co-mutations in NSCLC: genomic landscape and differential responses to EGFR-TKIs in a large real-world cohort.BMC cancer · 2026Article
- The Effects of Variant Allele Frequency for EGFR Mutation on Early Tumor Shrinkage and Deepness of Response to Osimertinib in Patients with Metastatic Non-Small Cell Lung Cancer: An Exploratory Analysis.Journal of clinical medicine · 2026Article
- Variant allele frequency as a predictor of treatment response to osimertinib in EGFR-mutated NSCLC.Frontiers in molecular biosciences · 2026Article
- Comprehensive Liquid Biopsy Approaches for the Clinical Management of Lung Cancer Using Multiple Biological Matrices.International journal of molecular sciences · 2025Review
- Analysis of genomic alternations in epidermal growth factor receptor (EGFR)-T790M-mutated non-small cell lung cancer (NSCLC) patients with acquired resistance to osimertinib therapy.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2025Article
- Early monitoring of plasma KRAS G12C with digital PCR predicts antitumor response to immunotherapy or sotorasib in advanced NSCLC: A brief report.The journal of liquid biopsy · 2024Article
- A Prospective Observational Study on Analyzing Lung Cancer Gene Mutation Variant Allele Frequency (VAF) and Its Correlation with Treatment Efficacy.International journal of molecular sciences · 2024Observational
- [Advances in Diagnosis and Targeted Therapy of G719X/L861Q/S768I Mutant Non-small Cell Lung Cancer].Zhongguo fei ai za zhi = Chinese journal of lung cancer · 2024Review
- Next generation sequencing and genomic mapping: towards precision molecular diagnosis of lung cancer in Morocco.The Pan African medical journal · 2024Article
- Impact of ramucirumab plus erlotinib on circulating cell-free DNA from patients with untreated metastatic non-small cell lung cancer withTranslational lung cancer research · 2023Article
- Article
- Sequential treatment in advanced epidermal growth factor receptor-mutated lung adenocarcinoma patients receiving first-line bevacizumab combined with 1st/2nd-generation EGFR-tyrosine kinase inhibitors.Frontiers in oncology · 2023Article
- EGFR T751_I759delinsN Mutation in Exon19 Detected by NGS but Not by Real-Time PCR in a Heavily-Treated Patient with NSCLC.International journal of molecular sciences · 2022Article
- Review
- Osimertinib for lung cancer cells harboring low-frequency EGFR T790M mutation.Translational oncology · 2022Article
- Review
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe allele frequency of epidermal growth factor receptor (EGFR) mutations could be a potential molecular biomarker for the outcome of osimertinib therapy.
objectiveThe purpose of our study was to assess the clinical relevance of the allele frequency of EGFR mutations in plasma-based circulating tumor DNA (ctDNA) before starting osimertinib therapy in patients with advanced EGFR-mutated non-small cell lung cancer (NSCLC) who had progressed under treatment with EGFR tyrosine kinase inhibitors (TKIs). PATIENTS AND
methodsWe enrolled 141 patients with advanced EGFR T790M-positive NSCLC who underwent second-line osimertinib treatment. Plasma ctDNA was tested for EGFR-activating mutations (EGFR deletions in exon 19, L858R, L861Q, S768I) and T790M by means of droplet digital polymerase chain reaction (ddPCR).
resultsThe allele frequency of EGFR-activating mutations in plasma ctDNA before osimertinib initiation ranged from 0 to 81,543 copies/ml and was independently associated with progression-free survival (PFS) and overall survival (OS) after adjusting for known clinicopathological risk factors (PFS: adjusted hazard ratio [HR] 1.26, 95% confidence interval [CI] 1.15-1.39, P < 0.0001; OS: adjusted HR 1.32, 95% CI 1.18-1.47, P < 0.0001). The allele frequency of T790M in plasma ctDNA before starting osimertinib therapy ranged from 0 to 38,092 copies/ml. Multivariate analyses showed that a higher T790M allele frequency was associated with a trend towards a shorter PFS (adjusted HR 1.19, 95% CI 0.99-1.42, P = 0.05) and a significantly shorter OS (adjusted HR 1.25, 95% CI 1.02-1.53, P = 0.03) of the patients.
conclusionA higher allele frequency of EGFR mutations, particularly EGFR-activating mutations, in plasma ctDNA is a poor prognostic marker. Further studies on the clinical utility of liquid biopsy are needed.
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