PMID- 34108619 OWN - NLM STAT- MEDLINE DCOM- 20211221 LR - 20221030 IS - 1476-5594 (Electronic) IS - 0950-9232 (Linking) VI - 40 IP - 26 DP - 2021 Jul TI - A risk model developed based on tumor microenvironment predicts overall survival and associates with tumor immunity of patients with lung adenocarcinoma. PG - 4413-4424 LID - 10.1038/s41388-021-01853-y [doi] AB - Tumor microenvironment (TME) has been reported to exhibit a crucial effect in lung cancer. Therefore, this study was aimed to investigate the genes associated with TME and develop a risk score to predict the overall survival (OS) of patients with lung adenocarcinoma (LUAD) based on these genes. The immune and stromal scores were generated by the ESTIMATE algorithm for LUAD patients in The Cancer Genome Atlas (TCGA) database. Differentially expressed gene and weighted gene co-expression network analyses were used to derive immune- and stromal-related genes. The Least Absolute Shrinkage and Selection Operator (LASSO)-Cox regression was applied for further selection and the selected genes were inputted into stepwise regression to develop TME-related risk score (TMErisk) which was further validated in Gene Expression Omnibus (GEO) datasets. TMErisk-related biological phenotypes were analyzed in function enrichment, tumor immune signature, and tumor mutation signature. The patient's response to immunotherapy was inferred by the tumor immune dysfunction and exclusion (TIDE) score and immunophenoscore (IPS). According to our results, TMErisk was developed based on SERPINE1, CX3CR1, CD200R1, GBP1, IRF1, STAP1, LOX, and OR7E47P. Furthermore, high TMErisk was identified as a poor factor for OS in TCGA and GEO datasets, as well as in subgroup analysis with different gender, smoking status, age, race, anatomic site, therapies, and tumor-node-metastasis (TNM) stages. Higher TMErisk is also associated negatively with the abundance of B cells, CD4+ T cells, CD8+ T cells, neutrophils, macrophages, and other stromal or immune cells. Several genes of the human leukocyte antigen (HLA) family and immune checkpoints were less expressed in the high-TMErisk group. Mutations of 19 genes occurred more frequently in the high-TMErisk group. These mutations may be associated with TME change and indicate patients' response to immunotherapy. According to our analyses, a lower TMErisk score may indicate better response and OS outcome of immunotherapy. FAU - Wu, Jie AU - Wu J AD - Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China. FAU - Li, Lan AU - Li L AD - Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China. FAU - Zhang, Huibo AU - Zhang H AD - Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China. FAU - Zhao, Yaqi AU - Zhao Y AD - Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China. FAU - Zhang, Haohan AU - Zhang H AD - Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China. FAU - Wu, Siyi AU - Wu S AD - Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China. FAU - Xu, Bin AU - Xu B AUID- ORCID: 0000-0002-0499-0430 AD - Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China. xubin_oncology@whu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210609 PL - England TA - Oncogene JT - Oncogene JID - 8711562 RN - 0 (Biomarkers, Tumor) SB - IM MH - Adenocarcinoma of Lung/genetics/immunology/mortality/pathology MH - Biomarkers, Tumor/genetics MH - Gene Expression Regulation, Neoplastic/genetics/immunology MH - Humans MH - Immunity/genetics/*immunology MH - Immunotherapy/methods MH - Lung Neoplasms/genetics/*immunology/*mortality/pathology MH - Mutation/genetics MH - Prognosis MH - Tumor Microenvironment/genetics/*immunology EDAT- 2021/06/11 06:00 MHDA- 2021/12/22 06:00 CRDT- 2021/06/10 06:36 PHST- 2020/03/11 00:00 [received] PHST- 2021/05/21 00:00 [accepted] PHST- 2021/05/10 00:00 [revised] PHST- 2021/06/11 06:00 [pubmed] PHST- 2021/12/22 06:00 [medline] PHST- 2021/06/10 06:36 [entrez] AID - 10.1038/s41388-021-01853-y [pii] AID - 10.1038/s41388-021-01853-y [doi] PST - ppublish SO - Oncogene. 2021 Jul;40(26):4413-4424. doi: 10.1038/s41388-021-01853-y. Epub 2021 Jun 9.