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- W2885264750 abstract "To evaluate the feasibility of detecting actionable gene mutations in circulating tumor DNA (ctDNA) in patients with advanced non-small-cell lung cancer (NSCLC) using targeted next-generation sequencing (NGS).In total 50 plasma samples from patients newly diagnosed with advanced NSCLC or resistant to first-line tyrosine kinase inhibitors (TKIs) were subjected to deep sequencing on a seven-gene panel (BRAF, EGFR, ERBB2, KRAS, NRAS, PIK3CA, PTEN) incorporated with molecular barcodes to improve accuracy in variant detection. When possible, results were compared with those from matched tissue samples.At least one alteration in the ctDNA was detected in 44 out of 50 patients (88%); EGFR was the most frequently mutated gene. Half the total number of patients (50%, 25 of 50) had at least one actionable genetic alteration with targeted therapies available for treatment. Our results showed a high concordance rate of 81% in detection of EGFR mutation between 26 matched tissue and plasma samples. For progressive patients, from whom tissue is mostly unavailable, the resistant EGFR T790 M mutation was validated using the droplet digital polymerase chain reaction (ddPCR), yielding a concordance of 92% between alternative platforms.Our study demonstrated that therapeutically actionable mutations can be detected with high accuracy in ctDNA using NGS. This promising approach offers alternative and non-invasive diagnostic methods for treatment guidance and clinical monitoring." @default.
- W2885264750 created "2018-08-22" @default.
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- W2885264750 date "2018-10-01" @default.
- W2885264750 modified "2023-09-26" @default.
- W2885264750 title "Non-invasive detection of actionable mutations in advanced non-small-cell lung cancer using targeted sequencing of circulating tumor DNA" @default.
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- W2885264750 doi "https://doi.org/10.1016/j.lungcan.2018.08.007" @default.
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