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Lung adenocarcinoma (LUAD) is the most common histological subtype of non-small cell lung cancer (NSCLC) with a low 5-year survival rate, which may be associated with the presence of metastatic tumors at the time of diagnosis, especially lymph node metastasis (LNM). This study aimed to construct a LNM-related gene signature for predicting the prognosis of patients with LUAD. Methods. RNA sequencing data and clinical information of LUAD patients were extracted from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases. Samples were divided into metastasis (M) and nonmetastasis (NM) groups based on LNM status. Differentially expressed genes (DEGs) between M and NM groups were screened, and then WGCNA was applied to identify key genes. Furthermore, univariate Cox and LASSO regression analyses were conducted to construct a risk score model, and the predictive performance of model was validated by GSE68465, GSE42127, and GSE50081. The protein and mRNA expression level of LNM-associated genes were detected by human protein atlas (HPA) and GSE68465. Results. A prognostic model based on eight LNM-related genes (ANGPTL4, BARX2, GPR98, KRT6A, PTPRH, RGS20, TCN1, and TNS4) was developed. Patients in the high-risk group had poorer overall survival than those in the low-risk group, and validation analysis showed that this model had potential predictive value for patients with LUAD. HPA analysis supported the upregulation of ANGPTL4, KRT6A, BARX2, RGS20 and the downregulation of GPR98 in LUAD compared with normal tissues. Conclusion. Our results indicated that the eight LNM-related genes signature had potential value in the prognosis of patients with LUAD, which may have important practical implications.<\/jats:p>","DOI":"10.1155\/2023\/6585109","type":"journal-article","created":{"date-parts":[[2023,1,31]],"date-time":"2023-01-31T16:06:44Z","timestamp":1675181204000},"page":"1-15","source":"Crossref","is-referenced-by-count":9,"title":["Establishment of a Lymph Node Metastasis-Associated Prognostic Signature for Lung Adenocarcinoma"],"prefix":"10.1155","volume":"2023","author":[{"given":"Jiao","family":"Yu","sequence":"first","affiliation":[{"name":"Department of Radiation Oncology, Shaanxi Provincial People\u2019s Hospital, Xi\u2019an, Shaanxi 710068, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gang","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Thyroid and Breast Surgery, Xi\u2019an Daxing Hospital, Xi\u2019an, Shaanxi 710068, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yingxuan","family":"Tian","sequence":"additional","affiliation":[{"name":"Department of Geriatric Respiratory, Shaanxi Provincial People\u2019s Hospital, Xi\u2019an, Shaanxi 710068, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1095-6263","authenticated-orcid":true,"given":"Shufen","family":"Huo","sequence":"additional","affiliation":[{"name":"Department of Geriatric Respiratory, Shaanxi Provincial People\u2019s Hospital, Xi\u2019an, Shaanxi 710068, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.3322\/caac.21654"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1038\/nature25183"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(17)33326-3"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.1111\/1759-7714.13681"},{"key":"5","doi-asserted-by":"publisher","DOI":"10.1111\/1759-7714.12908"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1155\/2020\/2842604"},{"issue":"12","key":"7","doi-asserted-by":"crossref","first-page":"2112","DOI":"10.1016\/j.jtho.2016.09.124","article-title":"The IASLC mesothelioma staging Project: proposals for the M descriptors and for revision of the TNM stage groupings in the forthcoming (eighth) edition of the TNM classification for mesothelioma","volume":"11","author":"V. 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