1. Data from Network-Based Integration of GWAS and Gene Expression Identifies a HOX-Centric Network Associated with Serous Ovarian Cancer Risk
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Paul D.P. Pharoah, Simon A. Gayther, Matthew L. Freedman, Alvaro N.A. Monteiro, Thomas A. Sellers, Argyrios Ziogas, Wei Zheng, Hannah Yang, Anna Wu, Xifeng Wu, Yin-Ling Woo, Lynne R. Wilkens, Kristine G. Wicklund, Alice S. Whittemore, Nicolas Wentzensen, Christine Walsh, Shan Wang-Gohrke, Robert A. Vierkant, Ignace Vergote, Els Van Nieuwenhuysen, Anne M. van Altena, Shelley S. Tworoger, Ya-Yu Tsai, Agnieszka Timorek, Pamela J. Thompson, Kathryn L. Terry, Soo-Hwang Teo, Ingvild L. Tangen, Lara E. Sucheston-Campbell, Melissa C. Southey, Honglin Song, Weiva Sieh, Nadeem Siddiqui, Yurii B. Shvetsov, Xiao-Ou Shu, Ira Schwaab, Joellen M. Schildkraut, Helga B. Salvesen, Iwona K. Rzepecka, Ingo B. Runnebaum, Anja Rudolph, Joseph H. Rothstein, Mary Anne Rossing, Barry Rosen, Harvey A. Risch, Susan J. Ramus, Elizabeth M. Poole, Malcolm C. Pike, Catherine M. Phelan, Jennifer Permuth-Wey, Liisa M. Pelttari, Tanja Pejovic, Celeste Leigh Pearce, Rachel Palmieri Weber, Sandra Orsulic, Irene Orlow, Sara H. Olson, Kunle Odunsi, Heli Nevanlinna, Roberta B. Ness, Lotte Nedergaard, Steven A. Narod, Kirsten B. Moysich, Francesmary Modugno, Usha Menon, Iain A. McNeish, John R. McLaughlin, Valerie McGuire, Keitaro Matsuo, Leon Massuger, Lene Lundvall, Jan Lubinski, Karen Lu, Jolanta Lissowska, Dong Liang, Douglas A. Levine, Jenny Lester, Arto Leminen, Shashi Lele, Alice W. Lee, Nhu D. Le, Sandrina Lambrechts, Diether Lambrechts, Jolanta Kupryjanczyk, Camilla Krakstad, Lambertus A. Kiemeney, Joseph Kelley, Melissa Kellar, Linda E. Kelemen, Susanne K. Kjaer, Beth Y. Karlan, Bu-Tian Ji, Allan Jensen, James Paul, Anna Jakubowska, Edwin S. Iversen, Satoyo Hosono, Claus K. Hogdall, Estrid Hogdall, Peter Hillemanns, Michelle A.T. Hildebrandt, Florian Heitz, Alexander Hein, Philipp Harter, Patricia Harrington, Jacek Grownwald, Marc T. Goodman, Ellen L. Goode, Rosalind Glasspool, Graham G. Giles, Aleksandra Gentry-Maharaj, Yu-Tang Gao, Brooke L. Fridley, Peter A. Fasching, Arif B. Ekici, Robert P. Edwards, Douglas F. Easton, Diana Eccles, Matthias Dürst, Andreas du Bois, Thilo Dörk, Jennifer A. Doherty, Ed Dicks, Joe Dennis, Agnieszka Dansonka-Mieszkowska, Cezary Cybulski, Julie M. Cunningham, Daniel Cramer, Linda S. Cook, Zhihua Chen, Yian Ann Chen, Jenny Chang-Claude, Karen Carty, Ian Campbell, Ralf Butzow, Angela Brooks-Wilson, Louise Brinton, Natalia Bogdanova, Line Bjørge, Maria Bisogna, Andrew Berchuck, Matthias W. Beckmann, Yukie T. Bean, Elisa V. Bandera, Helen Baker, Georgia Chenevix-Trench, Natalia Antonenkova, Hoda Anton-Culver, Katja K.H. Aben, Kate Lawrenson, Qiyuan Li, Jonathan P. Tyrer, and Siddhartha P. Kar
- Abstract
Background: Genome-wide association studies (GWAS) have so far reported 12 loci associated with serous epithelial ovarian cancer (EOC) risk. We hypothesized that some of these loci function through nearby transcription factor (TF) genes and that putative target genes of these TFs as identified by coexpression may also be enriched for additional EOC risk associations.Methods: We selected TF genes within 1 Mb of the top signal at the 12 genome-wide significant risk loci. Mutual information, a form of correlation, was used to build networks of genes strongly coexpressed with each selected TF gene in the unified microarray dataset of 489 serous EOC tumors from The Cancer Genome Atlas. Genes represented in this dataset were subsequently ranked using a gene-level test based on results for germline SNPs from a serous EOC GWAS meta-analysis (2,196 cases/4,396 controls).Results: Gene set enrichment analysis identified six networks centered on TF genes (HOXB2, HOXB5, HOXB6, HOXB7 at 17q21.32 and HOXD1, HOXD3 at 2q31) that were significantly enriched for genes from the risk-associated end of the ranked list (P < 0.05 and FDR < 0.05). These results were replicated (P < 0.05) using an independent association study (7,035 cases/21,693 controls). Genes underlying enrichment in the six networks were pooled into a combined network.Conclusion: We identified a HOX-centric network associated with serous EOC risk containing several genes with known or emerging roles in serous EOC development.Impact: Network analysis integrating large, context-specific datasets has the potential to offer mechanistic insights into cancer susceptibility and prioritize genes for experimental characterization. Cancer Epidemiol Biomarkers Prev; 24(10); 1574–84. ©2015 AACR.
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- 2023
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