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Article Open Access

DNA methylation profiling analysis identifies a DNA methylation signature for predicting prognosis and recurrence of lung adenocarcinoma

  • Authors:
    • Rui Wang
    • Hong Zhu
    • Mingxia Yang
    • Chunrong Zhu
  • View Affiliations / Copyright

    Affiliations: Department of Oncology, Anhui Chest Hospital, Hefei, Anhui 230022, P.R. China, Department of Internal Medicine Oncology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China, Department of Pulmonary and Critical Care Medicine, The Affiliated Changzhou No. 2 People's Hospital, Changzhou, Jiangsu 213002, P.R. China, Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
    Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 5831-5842
    |
    Published online on: September 30, 2019
       https://doi.org/10.3892/ol.2019.10931
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Abstract

The aim of the present study was to identify candidate prognostic DNA methylation biomarkers for lung adenocarcinoma (LUAD), since the modern precise medicine for the treatment of LUAD requires more biomarkers and novel therapeutic targets of interest. DNA methylation profiling data of LUAD were downloaded from The Cancer Gene Atlas portal. Differentially methylated genes (DMGs) were screened to differentiate between samples designated as good and bad prognosis. LUAD‑associated methylation modules were obtained with the weighted correlation network analysis (WGCNA) package, followed by function enrichment analysis. Optimal prognostic DMGs were selected using the LASSO estimation‑based Cox‑PH approach and were used to construct a prognostic risk scoring system. The training set was dichotomized by risk score, into high‑ and low‑risk groups. The differences in overall survival (OS) time or recurrence‑free survival (RFS) time between the two groups were evaluated using a Kaplan‑Meier curve. A total of 742 DMG samples were screened for good and bad prognosis. WGCNA identified three LUAD‑associated modules, which were primarily associated with cytoskeleton organization, transcription and apoptosis. A nine‑gene prognostic methylation signature was determined, which included C20orf56, BTG2, C13orf16, DNASE1L1, ZDHHC3, FHDC1, ARF6, ITGB3 and ICAM4. A risk score‑based methylation signature classified the patients in the training set into high‑ and low‑risk groups with significantly different OS or RFS times. The prognostic value of the methylation signature was successfully verified in a validation set. In conclusion, the present study identified a nine‑gene methylation signature for the prediction of survival and recurrence in patients with LUAD and improved the understanding of the alterations in DNA methylation in LUAD.
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Copy and paste a formatted citation
Spandidos Publications style
Wang R, Zhu H, Yang M and Zhu C: DNA methylation profiling analysis identifies a DNA methylation signature for predicting prognosis and recurrence of lung adenocarcinoma. Oncol Lett 18: 5831-5842, 2019.
APA
Wang, R., Zhu, H., Yang, M., & Zhu, C. (2019). DNA methylation profiling analysis identifies a DNA methylation signature for predicting prognosis and recurrence of lung adenocarcinoma. Oncology Letters, 18, 5831-5842. https://doi.org/10.3892/ol.2019.10931
MLA
Wang, R., Zhu, H., Yang, M., Zhu, C."DNA methylation profiling analysis identifies a DNA methylation signature for predicting prognosis and recurrence of lung adenocarcinoma". Oncology Letters 18.6 (2019): 5831-5842.
Chicago
Wang, R., Zhu, H., Yang, M., Zhu, C."DNA methylation profiling analysis identifies a DNA methylation signature for predicting prognosis and recurrence of lung adenocarcinoma". Oncology Letters 18, no. 6 (2019): 5831-5842. https://doi.org/10.3892/ol.2019.10931
Copy and paste a formatted citation
x
Spandidos Publications style
Wang R, Zhu H, Yang M and Zhu C: DNA methylation profiling analysis identifies a DNA methylation signature for predicting prognosis and recurrence of lung adenocarcinoma. Oncol Lett 18: 5831-5842, 2019.
APA
Wang, R., Zhu, H., Yang, M., & Zhu, C. (2019). DNA methylation profiling analysis identifies a DNA methylation signature for predicting prognosis and recurrence of lung adenocarcinoma. Oncology Letters, 18, 5831-5842. https://doi.org/10.3892/ol.2019.10931
MLA
Wang, R., Zhu, H., Yang, M., Zhu, C."DNA methylation profiling analysis identifies a DNA methylation signature for predicting prognosis and recurrence of lung adenocarcinoma". Oncology Letters 18.6 (2019): 5831-5842.
Chicago
Wang, R., Zhu, H., Yang, M., Zhu, C."DNA methylation profiling analysis identifies a DNA methylation signature for predicting prognosis and recurrence of lung adenocarcinoma". Oncology Letters 18, no. 6 (2019): 5831-5842. https://doi.org/10.3892/ol.2019.10931
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