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논문 기본 정보

자료유형
학술저널
저자정보
Min Dong (Gansu Province Hospital of Traditional Chinese Medicine) Zengli Yang (First People’s Hospital of Guannan County) Xingfang Li (Gansu Province Hospital of Traditional Chinese Medicine) Zhenxiang Zhang (Lanzhou Traditional Chinese Medicine Hospital) Ankang Yin (Affiliated Hospital of Yangzhou University)
저널정보
연세대학교 의과대학 Yonsei Medical Journal Yonsei Medical Journal 제61권 제12호
발행연도
2020.1
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1,013 - 1,023 (11page)

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Purpose: Most lung adenocarcinoma (LUAD) patients are diagnosed at the advanced stage and have poor prognosis. DNA methylationplays an important role in the prognosis prediction of cancers. The objective of this study was to identify new DNA methylationsites as biomarkers for LUAD prognosis. Materials and Methods: We downloaded DNA methylation data from The Cancer Genome Atlas data portal. Cox proportionalhazard regression model and random survival forest algorithm were applied to identify the DNA-methylation sites. Methylationof sites were validated in the Gene Expression Omnibus cohorts. Function annotation were done to explore the biological functionof DNA methylated sites signature. Results: Six DNA methylation sites were identified as prognosis signature. The signature yielded acceptable discrimination betweenthe high-risk group and low-risk group. The discrimination effect of this DNA methylation signature for the OS was obvious,with a median OS of 21.89 months vs. 17.74 months for high-risk vs. low-risk groups. This prognostic prediction model wasvalidated by the test group and GEO dataset. The predictive survival value was higher for the prognostic prediction model thanthat for the tumor node metastasis stage. Adjuvant hemotherapy could not affect the prediction of the signature. Functional analysisindicated that these signature genes were involved in protein binding and cytoplasm. Conclusion: We identified the prognostic signature for LUAD by combining six DNA methylation sites. This could service as potentialrobust and specificity signature in the prognosis prediction of LUAD.

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