A genome-wide association meta-analysis of diarrhoeal disease in young children identifies FUT2 locus and provides plausible biological pathways.

Mariona Bustamante, Marie Standl, Quique Bassat, Natalia Vilor-Tejedor, Carolina Medina-Gomez, Carolina Bonilla, Tarunveer S Ahluwalia, Jonas Bacelis, Jonathan P Bradfield, Carla M T Tiesler, Fernando Rivadeneira, Susan Ring, Nadja H Vissing, Nadia R Fink, Astanand Jugessur, Frank D Mentch, Ferran Ballester, Jennifer Kriebel, Jessica C Kiefte-de Jong, Helene M Wolsk, Sabrina Llop, Elisabeth Thiering, Systke A Beth, Nicholas J Timpson, Josefine Andersen, Holger Schulz, Vincent W V Jaddoe, David M Evans, Johannes Waage, Hakon Hakonarson, Struan F A Grant, Bo Jacobsson, Klaus Bønnelykke, Hans Bisgaard, George Davey Smith, Henriette A Moll, Joachim Heinrich, Xavier Estivill, Jordi Sunyer

Journal: Human molecular genetics 2017;25(18):4127-4142

PMID: 27559109

Abstract

More than a million childhood diarrhoeal episodes occur worldwide each year, and in developed countries a considerable part of them are caused by viral infections. In this study, we aimed to search for genetic variants associated with diarrhoeal disease in young children by meta-analyzing genome-wide association studies, and to elucidate plausible biological mechanisms. The study was conducted in the context of the Early Genetics and Lifecourse Epidemiology (EAGLE) consortium. Data about diarrhoeal disease in two time windows (around 1 year of age and around 2 years of age) was obtained via parental questionnaires, doctor interviews or medical records. Standard quality control and statistical tests were applied to the 1000 Genomes imputed genotypic data. The meta-analysis (N = 5758) followed by replication (N = 3784) identified a genome-wide significant association between rs8111874 and diarrhoea at age 1 year. Conditional analysis suggested that the causal variant could be rs601338 (W154X) in the FUT2 gene. Children with the A allele, which results in a truncated FUT2 protein, had lower risk of diarrhoea. FUT2 participates in the production of histo-blood group antigens and has previously been implicated in the susceptibility to infections, including Rotavirus and Norovirus Gene-set enrichment analysis suggested pathways related to the histo-blood group antigen production, and the regulation of ion transport and blood pressure. Among others, the gastrointestinal tract, and the immune and neuro-secretory systems were detected as relevant organs. In summary, this genome-wide association meta-analysis suggests the implication of the FUT2 gene in diarrhoeal disease in young children from the general population.

© The Author 2016. Published by Oxford University Press. All rights reserved. For Permissions, please email: [email protected].

Address: ISGlobal, Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain [email protected].; Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.; Pompeu Fabra University (UPF), Barcelona, Spain.; CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.; Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.; ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.; Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique.; ISGlobal, Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.; Pompeu Fabra University (UPF), Barcelona, Spain.; CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.; The Generation R Study Group, Erasmus MC, Rotterdam, The Netherlands.; Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands.; Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands.; MRC/University of Bristol Integrative Epidemiology Unit, University of Bristol, Bristol, UK.; School of Social and Community Medicine, University of Bristol, Bristol, UK.; COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark.; Department of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.; Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.; Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.; Ludwig-Maximilians-University of Munich, Dr. von Hauner Children's Hospital, Division of Metabolic Diseases and Nutritional Medicine, Munich, Germany.; Department of Genetics and Bioinformatics, Area of Health Data and Digitalisation, Institute of Public Health, Oslo, Norway.; CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.; Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, València, Spain.; Research Unit of Molecular Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.; Institute of Epidemiology II, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.; Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands.; Department of Pediatrics, Erasmus MC, Rotterdam, The Netherlands.; Leiden University College, The Hague, The Netherlands.; The Generation R Study Group, Erasmus MC, Rotterdam, The Netherlands.; Department of Pediatrics, Erasmus MC, Rotterdam, The Netherlands.; MRC/University of Bristol Integrative Epidemiology Unit, University of Bristol, Bristol, UK.; School of Social and Community Medicine, University of Bristol, Bristol, UK.; University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Queensland, Australia.; Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.; Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.; Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.; Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.; Division of Endocrinology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.; Department of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.; Department of Genetics and Bioinformatics, Area of Health Data and Digitalisation, Institute of Public Health, Oslo, Norway.; Department of Pediatrics, Erasmus MC, Rotterdam, The Netherlands.; Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.; Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Inner City Clinic, University Hospital of Munich (LMU), Munich, Germany.; Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.; Pompeu Fabra University (UPF), Barcelona, Spain.; CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.; Experimental Genetics, Sidra Medical and Research Centre, Doha, Qatar.; ISGlobal, Center for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.; Pompeu Fabra University (UPF), Barcelona, Spain.; CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.
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