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Article Open Access

Evaluation of EGFR mutations in NSCLC with highly sensitive droplet digital PCR assays

  • Authors:
    • Xi‑Wen Jiang
    • Wei Liu
    • Xiao‑Ya Zhu
    • Xiao‑Xie Xu
  • View Affiliations / Copyright

    Affiliations: Da An Gene Co., Ltd. of Sun Yat‑sen University, Guangzhou, Guangdong 510665, P.R. China, Lu He Hospital Capital Medical University Beijing China, Beijing 100069, P.R. China
    Copyright: © Jiang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 593-603
    |
    Published online on: May 21, 2019
       https://doi.org/10.3892/mmr.2019.10259
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Abstract

Targeted drugs have been widely used in the treatment of patients with lung cancer, particularly for those with non‑small cell lung cancer (NSCLC). Plasma cell‑free DNA is an emerging clinical tool for the detection of epidermal growth factor receptor (EGFR) gene mutation in patients with lung cancer. Detection of circulating tumor (ct) DNA by droplet digital PCR (ddPCR) is a highly sensitive and minimally invasive alternative for the assessment and management of cancer. In the present study, four ddPCR systems were developed to detect the 19DELs, L858R, T790M and C797S mutations of the EGFR gene in plasma ctDNA samples, and all exhibited higher sensitivity compared with the amplification refractory mutation system (ARMS)‑PCR assays. The results revealed that the sensitivity of the ddPCR assays for the four major types of EGFR mutant reached 0.04%. In total, 50 plasma ctDNA samples were collected from patients with NSCLC to detect the 19DELs, L858R, T790M and C797S mutations by ddPCR and ARMS‑PCR. All the mutations except for C797S were detected and the concordance rates between ddPCR and ARMS‑PCR were 96% (19DELs), 98% (L858R) and 100% (T790M). The fraction of EGFR mutation ranged from 0.43 to 68.07% using the ddPCR method. Therefore, the present study suggests that the four ddPCR testing systems could be used for early detection of EGFR mutations in plasma samples, so that patients can better select the targeted drugs according to the EGFR mutation.
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Copy and paste a formatted citation
Spandidos Publications style
Jiang XW, Liu W, Zhu XY and Xu XX: Evaluation of EGFR mutations in NSCLC with highly sensitive droplet digital PCR assays. Mol Med Rep 20: 593-603, 2019.
APA
Jiang, X., Liu, W., Zhu, X., & Xu, X. (2019). Evaluation of EGFR mutations in NSCLC with highly sensitive droplet digital PCR assays. Molecular Medicine Reports, 20, 593-603. https://doi.org/10.3892/mmr.2019.10259
MLA
Jiang, X., Liu, W., Zhu, X., Xu, X."Evaluation of EGFR mutations in NSCLC with highly sensitive droplet digital PCR assays". Molecular Medicine Reports 20.1 (2019): 593-603.
Chicago
Jiang, X., Liu, W., Zhu, X., Xu, X."Evaluation of EGFR mutations in NSCLC with highly sensitive droplet digital PCR assays". Molecular Medicine Reports 20, no. 1 (2019): 593-603. https://doi.org/10.3892/mmr.2019.10259
Copy and paste a formatted citation
x
Spandidos Publications style
Jiang XW, Liu W, Zhu XY and Xu XX: Evaluation of EGFR mutations in NSCLC with highly sensitive droplet digital PCR assays. Mol Med Rep 20: 593-603, 2019.
APA
Jiang, X., Liu, W., Zhu, X., & Xu, X. (2019). Evaluation of EGFR mutations in NSCLC with highly sensitive droplet digital PCR assays. Molecular Medicine Reports, 20, 593-603. https://doi.org/10.3892/mmr.2019.10259
MLA
Jiang, X., Liu, W., Zhu, X., Xu, X."Evaluation of EGFR mutations in NSCLC with highly sensitive droplet digital PCR assays". Molecular Medicine Reports 20.1 (2019): 593-603.
Chicago
Jiang, X., Liu, W., Zhu, X., Xu, X."Evaluation of EGFR mutations in NSCLC with highly sensitive droplet digital PCR assays". Molecular Medicine Reports 20, no. 1 (2019): 593-603. https://doi.org/10.3892/mmr.2019.10259
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