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Molecular Cancer
Published in: Molecular Cancer 1/2018

Open Access 01-12-2018 | Letter to the Editor

Extracellular vesicle-derived DNA for performing EGFR genotyping of NSCLC patients

Authors: Jae Young Hur, Hee Joung Kim, Jong Sik Lee, Chang-Min Choi, Jae Cheol Lee, Min Kyo Jung, Chan Gi Pack, Kye Young Lee

Published in: Molecular Cancer | Issue 1/2018

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Abstract

Tumor cells shed an abundance of extracellular vesicles (EVs) to body fluids containing bioactive molecules including DNA, RNA, and protein. Investigations in the field of tumor-derived EVs open a new horizon in understanding cancer biology and its potential as cancer biomarkers as well as platforms for personalized medicine. This study demonstrates that successfully isolated EVs from plasma and bronchoalveolar lavage fluid (BALF) of non-small cell lung cancer (NSCLC) patients contain DNA that can be used for EGFR genotyping through liquid biopsy. In both plasma and BALF samples, liquid biopsy results using EV DNA show higher accordance with conventional tissue biopsy compared to the liquid biopsy of cfDNA. Especially, liquid biopsy with BALF EV DNA is tissue-specific and extremely sensitive compared to using cfDNA. Furthermore, use of BALF EV DNA also demonstrates higher efficiency in comparison to tissue rebiopsy for detecting p.T790 M mutation in the patients who developed resistance to EGFR-TKIs. These finding demonstrate possibility of liquid biopsy using EV DNA potentially replacing the current diagnostic methods for more accurate, cheaper, and faster results.
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Metadata
Title
Extracellular vesicle-derived DNA for performing EGFR genotyping of NSCLC patients
Authors
Jae Young Hur
Hee Joung Kim
Jong Sik Lee
Chang-Min Choi
Jae Cheol Lee
Min Kyo Jung
Chan Gi Pack
Kye Young Lee
Publication date
01-12-2018
Publisher
BioMed Central
Published in
Molecular Cancer / Issue 1/2018
Electronic ISSN: 1476-4598
DOI
https://doi.org/10.1186/s12943-018-0772-6

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