Abstract:
BACKGROUND:As a common malignant tumor in the colon, colon cancer (CC) has high incidence and recurrence rates. This study is designed to build a prognostic model for CC. METHODS:The gene expression dataset, microRNA-seq dataset, copy number variation (CNV) dataset, DNA methylation dataset, and transcription factor (TF) dataset of CC were downloaded from UCSC Xena database. Using limma package, the differentially methylated genes (DMGs), and differentially expressed genes (DEGs) and miRNAs (DEMs) were identified. Based on random forest method, prognostic model for each omics dataset were constructed. After the omics features related to prognosis were selected using logrank test, the prognostic model based on multi-omics features was built. Finally, the clinical phenotypes correlated with prognosis were screened using Kaplan-Meier survival analysis, and the nomogram model was established. RESULTS:There were 1625 DEGs, 268 DEMs, and 386 DMGs between the tumor and normal samples. A total of 105, 29, 159, five, and six genes/sites significantly correlated with prognosis were identified in the gene expression dataset (GABRD), miRNA-seq dataset (miR-1271), CNV dataset (RN7SKP247), DNA methylation dataset (cg09170112 methylation site [located in SFSWAP]), and TF dataset (SIX5), respectively. The prognostic model based on multi-omics features was more effective than those based on single omics dataset. The number of lymph nodes, pathologic_M stage, and pathologic_T stage were the clinical phenotypes correlated with prognosis, based on which the nomogram model was constructed. CONCLUSION:The prognostic model based on multi-omics features and the nomogram model might be valuable for the prognostic prediction of CC.
journal_name
Mol Genet Genomic Medjournal_title
Molecular genetics & genomic medicineauthors
Yang H,Jin W,Liu H,Wang X,Wu J,Gan D,Cui C,Han Y,Han C,Wang Zdoi
10.1002/mgg3.1255subject
Has Abstractpub_date
2020-07-01 00:00:00pages
e1255issue
7issn
2324-9269journal_volume
8pub_type
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