TY - JOUR T1 - Identification of Long Non-Coding RNA Expression Profiles and Co-Expression Genes in Thyroid Carcinoma Based on The Cancer Genome Atlas (TCGA) Database. AU - Zhang,Yun, AU - Jin,Taobo, AU - Shen,Haipeng, AU - Yan,Junfeng, AU - Guan,Ming, AU - Jin,Xin, Y1 - 2019/12/19/ PY - 2019/12/20/entrez PY - 2019/12/20/pubmed PY - 2020/6/27/medline SP - 9752 EP - 9769 JF - Medical science monitor : international medical journal of experimental and clinical research JO - Med. Sci. Monit. VL - 25 N2 - BACKGROUND Thyroid carcinoma is a malignancy with high morbidity and mortality. Genetic alterations play pivot roles in the pathogenesis of thyroid carcinoma, where long noncoding RNA (lncRNA) have been identified to be crucial. This study sought to investigate the biological functions of lncRNA expression profiles in thyroid carcinoma. MATERIAL AND METHODS The lncRNAs expression profiles were acquired from The Cancer Genome Atlas (TCGA) database according to 510 thyroid cancer tissues and 58 normal thyroid tissues. By using R package edgeR, differentially expressed RNAs were obtained. Also, an overall survival model was established based on Cox regression and clinical data then testified by Kaplan-Meier plot, receiver operating characteristic (ROC)-curve and C-index analysis. We investigated the co-expressed genes with lncRNAs involved in the prognostic model, as well as Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis was conducted R package clusterProfile. RESULTS A total of 352 lncRNAs were identified as differentially expressed in thyroid carcinoma, and an overall survival model consisting of 8 signature lncRNAs was proposed (ROC=0.862, C-index=0.893, P<0.05), 3 of which (DOCK9-DT, FAM111A-DT, and LINC01736) represent co-expressed mRNAs. However, as an oncogene, only FAM111A-DT increased the prognostic risk in thyroid carcinoma. Furthermore, we found differential genes LINC01016, LHX1-DT, IGF2-AS, ND MIR1-1HG-AS1, significantly related to lymph node metastasis (P<0.05). CONCLUSIONS In this study, we clarified the differential lncRNA expression profiles which were related to the tumorigenesis and prognosis in thyroid carcinoma. Our results provide new rationale and understandings to the pathogenesis and regulatory mechanisms of thyroid carcinoma. SN - 1643-3750 UR - https://www.unboundmedicine.com/medline/citation/31856144/Identification_of_Long_Non_Coding_RNA_Expression_Profiles_and_Co_Expression_Genes_in_Thyroid_Carcinoma_Based_on_The_Cancer_Genome_Atlas__TCGA__Database_ L2 - https://www.medscimonit.com/download/index/idArt/917845 DB - PRIME DP - Unbound Medicine ER -