TY - JOUR TI - Genome-wide analysis of 944 133 individuals provides insights into the etiology of haemorrhoidal disease AU - Zheng, Tenghao AU - Ellinghaus, David AU - Juzenas, Simonas AU - Cossais, AU - Francois AU - Burmeister, Greta AU - Mayr, Gabriele AU - Jorgensen, AU - Isabella Friis AU - Teder-Laving, Maris AU - Skogholt, Anne Heidi and AU - Chen, Sisi AU - Strege, Peter R. AU - Ito, Go AU - Banasik, Karina and AU - Becker, Thomas AU - Bokelmann, Frank AU - Brunak, Soren AU - Buch, Stephan AU - and Clausnitzer, Hartmut AU - Datz, Christian AU - Degenhardt, Frauke and AU - Doniec, Marek AU - Erikstrup, Christian AU - Esko, Tonu AU - Forster, AU - Michael AU - Frey, Norbert AU - Fritsche, Lars G. AU - Gabrielsen, Maiken AU - Elvestad AU - Grassle, Tobias AU - Gsur, Andrea AU - Gross, Justus and AU - Hampe, Jochen AU - Hendricks, Alexander AU - Hinz, Sebastian AU - Hveem, AU - Kristian AU - Jongen, Johannes AU - Junker, Ralf AU - Karlsen, Tom Hemming AU - and Hemmrich-Stanisak, Georg AU - Kruis, Wolfgang AU - Kupcinskas, Juozas AU - and Laubert, Tilman AU - Rosenstiel, Philip C. AU - Roecken, Christoph and AU - Laudes, Matthias AU - Leendertz, Fabian H. AU - Lieb, Wolfgang and AU - Limperger, Verena AU - Margetis, Nikolaos AU - Matz-Rensing, Kerstin and AU - Nemeth, Christopher Georg AU - Ness-Jensen, Eivind AU - Nowak-Gottl, AU - Ulrike AU - Pandit, Anita AU - Pedersen, Ole Birger AU - Peleikis, Hans AU - Gunter AU - Peuker, Kenneth AU - Rodriguez, Cristina Leal AU - Ruehlemann, AU - Malte Christoph AU - Schniewind, Bodo AU - Schulzky, Martin and AU - Skieceviciene, Jurgita AU - Tepel, Jurgen AU - Thomas, Laurent and AU - Uellendahl-Werth, Florian AU - Ullum, Henrik AU - Vogel, Ilka AU - Volzke, AU - Henry AU - von Fersen, Lorenzo AU - von Schonfels, Witigo AU - Vanderwerff, AU - Brett AU - Wilking, Julia AU - Wittig, Michael AU - Zeissig, Sebastian and AU - Zobel, Myrko AU - Zawistowski, Matthew AU - Vacic, Vladimir AU - Sazonova, AU - Olga AU - Noblin, Elizabeth S. AU - Farrugia, Gianrico AU - Beyder, Arthur AU - and Wedel, Thilo AU - Kahlke, Volker AU - Schafmayer, Clemens AU - D'Amato, AU - Mauro AU - Franke, Andre AU - DBDS Consortium AU - The 23andMe Res Team JO - Gut Pathogens PY - 2021 VL - 70 TODO - 8 SP - 1538-1549 PB - BMJ Publishing Group SN - 1757-4749 TODO - 10.1136/gutjnl-2020-323868 TODO - anorectal disorders; genetics; anal canal histopathology TODO - Objective Haemorrhoidal disease (HEM) affects a large and silently suffering fraction of the population but its aetiology, including suspected genetic predisposition, is poorly understood. We report the first genome-wide association study (GWAS) meta-analysis to identify genetic risk factors for HEM to date. Design We conducted a GWAS meta-analysis of 218 920 patients with HEM and 725 213 controls of European ancestry. Using GWAS summary statistics, we performed multiple genetic correlation analyses between HEM and other traits as well as calculated HEM polygenic risk scores (PRS) and evaluated their translational potential in independent datasets. Using functional annotation of GWAS results, we identified HEM candidate genes, which differential expression and coexpression in HEM tissues were evaluated employing RNA-seq analyses. The localisation of expressed proteins at selected loci was investigated by immunohistochemistry. Results We demonstrate modest heritability and genetic correlation of HEM with several other diseases from the GI, neuroaffective and cardiovascular domains. HEM PRS validated in 180 435 individuals from independent datasets allowed the identification of those at risk and correlated with younger age of onset and recurrent surgery. We identified 102 independent HEM risk loci harbouring genes whose expression is enriched in blood vessels and GI tissues, and in pathways associated with smooth muscles, epithelial and endothelial development and morphogenesis. Network transcriptomic analyses highlighted HEM gene coexpression modules that are relevant to the development and integrity of the musculoskeletal and epidermal systems, and the organisation of the extracellular matrix. Conclusion HEM has a genetic component that predisposes to smooth muscle, epithelial and connective tissue dysfunction. ER -