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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Fine-mapping inflammatory bowel disease loci to single-variant resolution
AU - Huang, Hailiang
AU - Fang, Ming
AU - Jostins, Luke
AU - Umićević Mirkov, Maša
AU - Boucher, Gabrielle
AU - Anderson, Carl A
AU - Andersen, Vibeke
AU - Cleynen, Isabelle
AU - Cortes, Adrian
AU - Crins, François
AU - D'Amato, Mauro
AU - Deffontaine, Valérie
AU - Dmitrieva, Julia
AU - Docampo, Elisa
AU - Elansary, Mahmoud
AU - Farh, Kyle Kai-How
AU - Franke, Andre
AU - Gori, Ann-Stephan
AU - Goyette, Philippe
AU - Halfvarson, Jonas
AU - Haritunians, Talin
AU - Knight, Jo
AU - Lawrance, Ian C
AU - Lees, Charlie W
AU - Louis, Edouard
AU - Mariman, Rob
AU - Meuwissen, Theo
AU - Mni, Myriam
AU - Momozawa, Yukihide
AU - Parkes, Miles
AU - Spain, Sarah L
AU - Théâtre, Emilie
AU - Trynka, Gosia
AU - Satsangi, Jack
AU - van Sommeren, Suzanne
AU - Vermeire, Severine
AU - Xavier, Ramnik J
AU - Weersma, Rinse K
AU - Duerr, Richard H
AU - Mathew, Christopher G
AU - Rioux, John D
AU - McGovern, Dermot P B
AU - Cho, Judy H
AU - Georges, Michel
AU - Daly, Mark J
AU - Barrett, Jeffrey C
AU - International Inflammatory Bowel Disease Genetics Consortium
PY - 2017/7/13
Y1 - 2017/7/13
N2 - Inflammatory bowel diseases are chronic gastrointestinal inflammatory disorders that affect millions of people worldwide. Genome-wide association studies have identified 200 inflammatory bowel disease-associated loci, but few have been conclusively resolved to specific functional variants. Here we report fine-mapping of 94 inflammatory bowel disease loci using high-density genotyping in 67,852 individuals. We pinpoint 18 associations to a single causal variant with greater than 95% certainty, and an additional 27 associations to a single variant with greater than 50% certainty. These 45 variants are significantly enriched for protein-coding changes (n = 13), direct disruption of transcription-factor binding sites (n = 3), and tissue-specific epigenetic marks (n = 10), with the last category showing enrichment in specific immune cells among associations stronger in Crohn's disease and in gut mucosa among associations stronger in ulcerative colitis. The results of this study suggest that high-resolution fine-mapping in large samples can convert many discoveries from genome-wide association studies into statistically convincing causal variants, providing a powerful substrate for experimental elucidation of disease mechanisms.
AB - Inflammatory bowel diseases are chronic gastrointestinal inflammatory disorders that affect millions of people worldwide. Genome-wide association studies have identified 200 inflammatory bowel disease-associated loci, but few have been conclusively resolved to specific functional variants. Here we report fine-mapping of 94 inflammatory bowel disease loci using high-density genotyping in 67,852 individuals. We pinpoint 18 associations to a single causal variant with greater than 95% certainty, and an additional 27 associations to a single variant with greater than 50% certainty. These 45 variants are significantly enriched for protein-coding changes (n = 13), direct disruption of transcription-factor binding sites (n = 3), and tissue-specific epigenetic marks (n = 10), with the last category showing enrichment in specific immune cells among associations stronger in Crohn's disease and in gut mucosa among associations stronger in ulcerative colitis. The results of this study suggest that high-resolution fine-mapping in large samples can convert many discoveries from genome-wide association studies into statistically convincing causal variants, providing a powerful substrate for experimental elucidation of disease mechanisms.
U2 - 10.1038/nature22969
DO - 10.1038/nature22969
M3 - Journal article
C2 - 28658209
VL - 547
SP - 173
EP - 178
JO - Nature
JF - Nature
SN - 0028-0836
IS - 7662
ER -