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Multi-Omics Analysis Reveals a HIF Network and Hub Gene EPAS1 Associated with Lung Adenocarcinoma

Z. Wang, Y. Wei, R. Zhang, L. Su, SM. Gogarten, G. Liu, P. Brennan, JK. Field, JD. McKay, J. Lissowska, B. Swiatkowska, V. Janout, C. Bolca, M. Kontic, G. Scelo, D. Zaridze, CC. Laurie, KF. Doheny, EK. Pugh, BA. Marosy, KN. Hetrick, X. Xiao, C....

. 2018 ; 32 (-) : 93-101. [pub] 20180531

Language English Country Netherlands

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc19000678

Recent technological advancements have permitted high-throughput measurement of the human genome, epigenome, metabolome, transcriptome, and proteome at the population level. We hypothesized that subsets of genes identified from omic studies might have closely related biological functions and thus might interact directly at the network level. Therefore, we conducted an integrative analysis of multi-omic datasets of non-small cell lung cancer (NSCLC) to search for association patterns beyond the genome and transcriptome. A large, complex, and robust gene network containing well-known lung cancer-related genes, including EGFR and TERT, was identified from combined gene lists for lung adenocarcinoma. Members of the hypoxia-inducible factor (HIF) gene family were at the center of this network. Subsequent sequencing of network hub genes within a subset of samples from the Transdisciplinary Research in Cancer of the Lung-International Lung Cancer Consortium (TRICL-ILCCO) consortium revealed a SNP (rs12614710) in EPAS1 associated with NSCLC that reached genome-wide significance (OR = 1.50; 95% CI: 1.31-1.72; p = 7.75 × 10-9). Using imputed data, we found that this SNP remained significant in the entire TRICL-ILCCO consortium (p = .03). Additional functional studies are warranted to better understand interrelationships among genetic polymorphisms, DNA methylation status, and EPAS1 expression.

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$a Wei, Yongyue $u Department of Epidemiology, Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China.
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$a Zhang, Ruyang $u Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Epidemiology, Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China.
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$a Su, Li $u Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
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