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1. Serum C-reactive protein and CRP genotype in pediatric inflammatory bowel disease: influence on phenotype, natural history, and response to therapy.

Author

Henderson P, Kennedy NA, Van Limbergen JE, Cameron FL, Satsangi J, Russell RK, and Wilson DC

Subjects
Adult, Child, Cohort Studies, Colitis, Ulcerative drug therapy, Colitis, Ulcerative surgery, Combined Modality Therapy, Crohn Disease drug therapy, Crohn Disease surgery, Disease Progression, Female, Genotype, Humans, Male, Phenotype, Prognosis, Tumor Necrosis Factor-alpha antagonists & inhibitors, Azathioprine therapeutic use, Biomarkers blood, C-Reactive Protein analysis, C-Reactive Protein genetics, Colitis, Ulcerative diagnosis, Crohn Disease diagnosis, Polymorphism, Single Nucleotide genetics
Abstract

Background: C-reactive protein (CRP) is an acute phase reactant. Patients with pediatric inflammatory bowel disease (PIBD) differ from adult patients with inflammatory bowel disease with regard to phenotype, inflammatory profile, and treatment response. We hypothesized that variations in CRP and CRP genotype influence PIBD phenotype, natural history, and remission after anti-tumor necrosis factor alpha therapy., Methods: Six single nucleotide polymorphisms tagging CRP (rs1935193, rs1130864, rs1205, rs1417938, rs11265263, and rs1800947) were genotyped in 465 patients with PIBD (diagnosed <17 yr). Phenotyping was serially performed until last follow-up and serum CRP levels recorded at diagnosis and before biological therapy in a subgroup., Results: CRP haplotype (ATGCTC) differed in those diagnosed <10 years, with rs1205T more frequent in Crohn's disease (CD) than ulcerative colitis (UC) (P = 0.009); the haplotype ATGCTC was less frequent in UC (P = 0.002). Three single nucleotide polymorphisms (rs1205, rs1130864, and rs1417938) showed association with elevated CRP levels at diagnosis. CRP genotype had no association with CD phenotype or natural history. CRP was more frequently raised at diagnosis in CD than UC (63% versus 22%, P < 0.0001). Elevated CRP at diagnosis was associated with a higher risk of progression to surgery in patients with CD (P < 0.0001) and the need for azathioprine in the overall PIBD cohort (P = 0.002). There was no effect of CRP genotype or serum CRP on the achievement of remission using anti-tumor necrosis factor alpha therapy., Conclusions: CRP and CRP genotype differ between pediatric patients with CD and UC with a high inflammatory burden at diagnosis suggesting a worse prognosis. Additional evaluation of CRP in inflammatory bowel disease pathogenesis and natural history is now warranted.

Published
2015
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2. Two-stage genome-wide methylation profiling in childhood-onset Crohn's Disease implicates epigenetic alterations at the VMP1/MIR21 and HLA loci.

Author

Adams AT, Kennedy NA, Hansen R, Ventham NT, OʼLeary KR, Drummond HE, Noble CL, El-Omar E, Russell RK, Wilson DC, Nimmo ER, Hold GL, and Satsangi J

Subjects
Adult, Case-Control Studies, Child, Female, Follow-Up Studies, Genetic Predisposition to Disease, Genotype, HLA Antigens genetics, Humans, Male, Membrane Proteins genetics, MicroRNAs genetics, Prognosis, Biomarkers analysis, Crohn Disease genetics, DNA Methylation, Epigenesis, Genetic genetics, Genome, Human, Genome-Wide Association Study, Polymorphism, Single Nucleotide genetics
Abstract

Background: As a result of technological and analytical advances, genome-wide characterization of key epigenetic alterations is now feasible in complex diseases. We hypothesized that this may provide important insights into gene-environmental interactions in Crohn's disease (CD) and is especially pertinent to early onset disease., Methods: The Illumina 450K platform was applied to assess epigenome-wide methylation profiles in circulating leukocyte DNA in discovery and replication pediatric CD cohorts and controls. Data were corrected for differential leukocyte proportions. Targeted replication was performed in adults using pyrosequencing. Methylation changes were correlated with gene expression in blood and intestinal mucosa., Results: We identified 65 individual CpG sites with methylation alterations achieving epigenome-wide significance after Bonferroni correction (P < 1.1 × 10(-7)), and 19 differently methylated regions displaying unidirectional methylation change. There was a highly significant enrichment of methylation changes around GWAS single nucleotide polymorphisms (P = 3.7 × 10(-7)), notably the HLA region and MIR21. Two-locus discriminant analysis in the discovery cohort predicted disease in the pediatric replication cohort with high accuracy (area under the curve, 0.98). The findings strongly implicate the transcriptional start site of MIR21 as a region of extended epigenetic alteration, containing the most significant individual probes (P = 1.97 × 10(-15)) within a GWAS risk locus. In extension studies, we confirmed hypomethylation of MIR21 in adults (P = 6.6 × 10(-5), n = 172) and show increased mRNA expression in leukocytes (P < 0.005, n = 66) and in the inflamed intestine (P = 1.4 × 10(-6), n = 99)., Conclusions: We demonstrate highly significant and replicable differences in DNA methylation in CD, defining the disease-associated epigenome. The data strongly implicate known GWAS loci, with compelling evidence implicating MIR21 and the HLA region.

Published
2014
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3. Multiple sclerosis genomic map implicates peripheral immune cells and microglia in susceptibility

Author

Patsopoulos, NA, Baranzini, SE, Santaniello, A, Shoostari, P, Cotsapas, C, Wong, G, Beecham, AH, James, T, Replogle, J, Vlachos, IS, McCabe, C, Pers, TH, Brandes, A, White, C, Keenan, B, Cimpean, M, Winn, P, Panteliadis, IP, Robbins, A, Andlauer, TFM, Zarzycki, O, Dubois, B, Goris, A, Sondergaard, HB, Sellebjerg, F, Sorensen, PS, Ullum, H, Thorner, LW, Saarela, J, Cournu-Rebeix, I, Damotte, V, Fontaine, B, Guillot-Noel, L, Lathrop, M, Vukusic, S, Berthele, A, Pongratz, V, Gasperi, C, Graetz, C, Grummel, V, Hemmer, B, Hoshi, M, Knier, B, Korn, T, Lill, CM, Luessi, F, Muhlau, M, Zipp, F, Dardiotis, E, Agliardi, C, Amoroso, A, Barizzone, N, Benedetti, MD, Bernardinelli, L, Cavalla, P, Clarelli, F, Comi, G, Cusi, D, Esposito, F, Ferre, L, Galimberti, D, Guaschino, C, Leone, MA, Martinelli, V, Moiola, L, Salvetti, M, Sorosina, M, Vecchio, D, Zauli, A, Santoro, S, Mancini, N, Zuccala, M, Mescheriakova, J, van Duijn, C, Bos, SD, Celius, EG, Spurkland, A, Comabella, M, Montalban, X, Alfredsson, L, Bomfim, IL, Gomez-Cabrero, D, Hillert, J, Jagodic, M, Linden, M, Piehl, F, Jelcic, I, Martin, R, Sospedra, M, Baker, A, Ban, M, Hawkins, C, Hysi, P, Kalra, S, Karpe, F, Khadake, J, Lachance, G, Molyneux, P, Neville, M, Thorpe, J, Bradshaw, E, Caillier, SJ, Calabresi, P, Cree, BAC, Cross, A, Davis, M, de Bakker, PWI, Delgado, S, Dembele, M, Edwards, K, Fitzgerald, K, Frohlich, IY, Gourraud, PA, Haines, JL, Hakonarson, H, Kimbrough, D, Isobe, N, Konidari, I, Lathi, E, Lee, MH, Li, T, An, D, Zimmer, A, Madireddy, L, Manrique, CP, Mitrovic, M, Olah, M, Patrick, E, Pericak-Vance, MA, Piccio, L, Schaefer, C, Weiner, H, Lage, K, Scott, RJ, Lechner-Scott, J, Leal, R, Moscato, P, Booth, DR, Stewart, GJ, Vucic, S, Pame, G, BamettO, M, Mason, D, GriffithS, L, Broadley, S, Tajouri, L, Baxter, A, Slee, M, Taylor, BV, Charlesworth, J, Kilpatrick, TJ, Rubio, J, Jokubaitis, V, Wiley, J, Butzkueven, H, Leslie, S, Motyer, A, Stankovich, J, Carroll, WM, Kermode, AG, Edrin, M, Barclay, M, Peyrin-Biroulet, L, Chamaillard, M, Colombe, JF, Cottone, M, Croft, A, D'Inca, R, Halfvarson, J, Hanigan, K, Henderson, P, Hugot, JP, Karban, A, Kennedy, NA, Khan, MA, Lemann, M, Levine, A, Massey, D, Milla, M, Motoey, GW, Ng, SME, Oikonomnou, J, Peeters, H, Proctor, DD, Rahier, JF, Roberts, R, Rutgeerts, P, Seibold, F, Stronati, L, Taylor, KM, Torkvist, L, Ublick, K, Van Limbergen, J, Van Gossum, A, Vatn, MH, Zhang, H, Zhang, W, Donnelly, P, Barroso, I, Blackwe, JM, Bramon, E, Brown, MA, Casas, JP, Corvin, A, Deloukas, P, Duncanson, A, Jankowski, J, Markus, HS, Mathew, CG, Palmer, CNA, Plomin, R, Rautanen, A, Sawcer, SJ, Trembath, RC, Viswanathan, AC, Wood, NW, Spencer, CCA, Band, G, Bellenguez, C, Freeman, C, Hellenthal, G, Giannoulatou, E, Pirinen, M, Pearson, R, Strange, A, Sul, Z, Vukcevic, DA, Langford, C, Hunt, SE, Edkins, S, Gwilliam, R, Blackburn, H, Bumpstead, SJ, Dronov, S, Gillman, M, Gray, E, Hammond, N, Jayakumar, A, McCann, OT, Liddle, J, Potter, SC, Ravindrarajah, R, Ricketts, M, Waller, M, Weston, P, Widaa, S, Whittaker, P, Compston, A, Hafler, D, Harbo, HF, Hauser, SL, Stewart, G, D'Alfonso, S, Hadjigeorgiou, G, Taylor, B, Barcellos, LF, Booth, D, Hintzen, R, Kockum, I, Martinelli-Boneschi, F, McCauley, JL, Oksenberg, JR, Oturai, A, Sawcer, S, Ivinson, AJ, Olsson, T, De Jager, PL, Patsopoulos, Na, Baranzini, Se, Santaniello, A, Shoostari, P, Cotsapas, C, Wong, G, Beecham, Ah, James, T, Replogle, J, Vlachos, I, Mccabe, C, Pers, Th, Brandes, A, White, C, Keenan, B, Cimpean, M, Winn, P, Panteliadis, Ip, Robbins, A, Andlauer, Tfm, Zarzycki, O, Dubois, B, Goris, A, Sondergaard, Hb, Sellebjerg, F, Sorensen, P, Ullum, H, Thorner, Lw, Saarela, J, Cournu-Rebeix, I, Damotte, V, Fontaine, B, Guillot-Noel, L, Lathrop, M, Vukusic, S, Berthele, A, Pongratz, V, Gasperi, C, Graetz, C, Grummel, V, Hemmer, B, Hoshi, M, Knier, B, Korn, T, Lill, Cm, Luessi, F, Muhlau, M, Zipp, F, Dardiotis, E, Agliardi, C, Amoroso, A, Barizzone, N, Benedetti, Md, Bernardinelli, L, Cavalla, P, Clarelli, F, Comi, G, Cusi, D, Esposito, F, Ferre, L, Galimberti, D, Guaschino, C, Leone, Ma, Martinelli, V, Moiola, L, Salvetti, M, Sorosina, M, Vecchio, D, Zauli, A, Santoro, S, Mancini, N, Zuccala, M, Mescheriakova, J, van Duijn, C, Bos, Sd, Celius, Eg, Spurkland, A, Comabella, M, Montalban, X, Alfredsson, L, Bomfim, Il, Gomez-Cabrero, D, Hillert, J, Jagodic, M, Linden, M, Piehl, F, Jelcic, I, Martin, R, Sospedra, M, Baker, A, Ban, M, Hawkins, C, Hysi, P, Kalra, S, Karpe, F, Khadake, J, Lachance, G, Molyneux, P, Neville, M, Thorpe, J, Bradshaw, E, Caillier, Sj, Calabresi, P, Cree, Bac, Cross, A, Davis, M, de Bakker, Pwi, Delgado, S, Dembele, M, Edwards, K, Fitzgerald, K, Frohlich, Iy, Gourraud, Pa, Haines, Jl, Hakonarson, H, Kimbrough, D, Isobe, N, Konidari, I, Lathi, E, Lee, Mh, Li, T, An, D, Zimmer, A, Madireddy, L, Manrique, Cp, Mitrovic, M, Olah, M, Patrick, E, Pericak-Vance, Ma, Piccio, L, Schaefer, C, Weiner, H, Lage, K, Scott, Rj, Lechner-Scott, J, Leal, R, Moscato, P, Booth, Dr, Stewart, Gj, Vucic, S, Pame, G, Bametto, M, Mason, D, Griffiths, L, Broadley, S, Tajouri, L, Baxter, A, Slee, M, Taylor, Bv, Charlesworth, J, Kilpatrick, Tj, Rubio, J, Jokubaitis, V, Wiley, J, Butzkueven, H, Leslie, S, Motyer, A, Stankovich, J, Carroll, Wm, Kermode, Ag, Edrin, M, Barclay, M, Peyrin-Biroulet, L, Chamaillard, M, Colombe, Jf, Cottone, M, Croft, A, D'Inca, R, Halfvarson, J, Hanigan, K, Henderson, P, Hugot, Jp, Karban, A, Kennedy, Na, Khan, Ma, Lemann, M, Levine, A, Massey, D, Milla, M, Motoey, Gw, Ng, Sme, Oikonomnou, J, Peeters, H, Proctor, Dd, Rahier, Jf, Roberts, R, Rutgeerts, P, Seibold, F, Stronati, L, Taylor, Km, Torkvist, L, Ublick, K, Van Limbergen, J, Van Gossum, A, Vatn, Mh, Zhang, H, Zhang, W, Donnelly, P, Barroso, I, Blackwe, Jm, Bramon, E, Brown, Ma, Casas, Jp, Corvin, A, Deloukas, P, Duncanson, A, Jankowski, J, Markus, H, Mathew, Cg, Palmer, Cna, Plomin, R, Rautanen, A, Sawcer, Sj, Trembath, Rc, Viswanathan, Ac, Wood, Nw, Spencer, Cca, Band, G, Bellenguez, C, Freeman, C, Hellenthal, G, Giannoulatou, E, Pirinen, M, Pearson, R, Strange, A, Sul, Z, Vukcevic, Da, Langford, C, Hunt, Se, Edkins, S, Gwilliam, R, Blackburn, H, Bumpstead, Sj, Dronov, S, Gillman, M, Gray, E, Hammond, N, Jayakumar, A, Mccann, Ot, Liddle, J, Potter, Sc, Ravindrarajah, R, Ricketts, M, Waller, M, Weston, P, Widaa, S, Whittaker, P, Compston, A, Hafler, D, Harbo, Hf, Hauser, Sl, Stewart, G, D'Alfonso, S, Hadjigeorgiou, G, Taylor, B, Barcellos, Lf, Booth, D, Hintzen, R, Kockum, I, Martinelli-Boneschi, F, Mccauley, Jl, Oksenberg, Jr, Oturai, A, Sawcer, S, Ivinson, Aj, Olsson, T, De Jager, Pl, Neurology, and Immunology

Subjects
0301 basic medicine, Multiple Sclerosis, Quantitative Trait Loci, Inheritance Patterns, Cell Cycle Proteins, Genome-wide association study, Biology, Major histocompatibility complex, Polymorphism, Single Nucleotide, Major Histocompatibility Complex, Transcriptome, 03 medical and health sciences, 0302 clinical medicine, Immune system, Gene Frequency, Autoimmune Process, medicine, Humans, RNA-Seq, X chromosome, Genetics, Chromosomes, Human, X, Multidisciplinary, Microglia, Multiple sclerosis, GTPase-Activating Proteins, Chromosome Mapping, Genomics, medicine.disease, 3. Good health, 030104 developmental biology, medicine.anatomical_structure, Genetic Loci, Case-Control Studies, biology.protein, Genome-Wide Association Study, 030217 neurology & neurosurgery
Abstract

Genetic roots of multiple sclerosis The genetics underlying who develops multiple sclerosis (MS) have been difficult to work out. Examining more than 47,000 cases and 68,000 controls with multiple genome-wide association studies, the International Multiple Sclerosis Genetics Consortium identified more than 200 risk loci in MS (see the Perspective by Briggs). Focusing on the best candidate genes, including a model of the major histocompatibility complex region, the authors identified statistically independent effects at the genome level. Gene expression studies detected that every major immune cell type is enriched for MS susceptibility genes and that MS risk variants are enriched in brain-resident immune cells, especially microglia. Up to 48% of the genetic contribution of MS can be explained through this analysis. Science , this issue p. eaav7188 ; see also p. 1383

Published
2019

4. IBD risk loci are enriched in multigenic regulatory modules encompassing putative causative genes

Author

Momozawa, Y, Dmitrieva, J, Theatre, E, Deffontaine, V, Rahmouni, S, Charloteaux, B, Crins, F, Docampo, E, Elansary, M, Gori, AS, Lecut, C, Mariman, R, Mni, M, Oury, C, Altukhov, I, Alexeev, D, Aulchenko, Y, Amininejad, L, Bouma, G, Hoentjen, F, Lowenberg, M, Oldenburg, B, Pierik, MJ, de Jong, AE, van der Woude, C.J., Visschedijk, MC, Lathrop, M, Hugot, JP, Weersma, RK, Vos, M, Franchimont, D, Vermeire, S, Kubo, M, Louis, E, Georges, M, Abraham, C, Achkar, JP, Ahmad, T, Ananthakrishnan, AN, Andersen, V, Anderson, CA, Andrews, JM, Annese, V, Aumais, G, Baidoo, L, Baldassano, RN, Bampton, PA, Barclay, M, Barrett, JC, Bayless, TM, Bethge, J, Bitton, A, Boucher, G, Brand, S, Brandt, B, Brant, SR, Buning, C, Chew, A, Cho, JH, Cleynen, I, Cohain, A, Croft, A, Daly, MJ, D'Amato, M, Danese, S, Jong, D, Denapiene, G, Denson, LA, Devaney, KL, Dewit, O, D'Inca, R, Dubinsky, M, Duerr, RH, Edwards, C, Ellinghaus, D, Essers, J, Ferguson, LR, Festen, EA, Fleshner, P, Florin, T, Franke, A, Fransen, K, Gearry, R, Gieger, C, Glas, J, Goyette, P, Green, T, Griffiths, AM, Guthery, SL, Hakonarson, H, Halfvarson, J, Hanigan, K, Haritunians, T, de Hart, A, Hawkey, C, Hayward, NK, Hedl, M, Henderson, P, Hu, XH, Huang, HL, Hui, KY, Imielinski, M, Ippoliti, A, Jonaitis, L, Jostins, L, Karlsen, TH, Kennedy, NA, Khan, MA, Kiudelis, G, Krishnaprasad, K, Kugathasan, S, Kupcinskas, L, Latiano, A, Laukens, D, Lawrance, IC, Lee, JC, Lees, CW, Leja, M, van Limbergen, J, Lionetti, P, Liu, JZ, Mahy, G, Mansfield, J, Massey, D, Mathew, CG, McGovern, DPB, Milgrom, R, Mitrovic, M, Montgomery, GW, Mowat, C, Newman, W, Ng, A, Ng, SC, Ng, SME, Nikolaus, S, Ning, K, Nothen, M, Oikonomou, I, Palmieri, O, Parkes, M, Phillips, A, Ponsioen, CY, Potocnik, U, Prescott, NJ, Proctor, DD, Radford-Smith, G, Rahier, JF, Raychaudhuri, S, Regueiro, M, Rieder, F, Rioux, JD, Ripke, S, Roberts, R, Russell, RK, Sanderson, JD, Sans, M, Satsangi, J, Schadt, EE, Schreiber, S, Schulte, D, Schumm, LP, Scott, R, Seielstad, M, Sharma, Y, Silverberg, MS, Simms, LA, Skieceviciene, J, Spain, SL, Steinhart, AH, Stempak, JM, Stronati, L, Sventoraityte, J, Targan, SR, Taylor, KM, Velde, A, Torkvist, L, Tremelling, M, van Sommeren, S, Vasiliauskas, E, Verspaget, HW, Walters, T, Wang, K, Wang, MH, Wei, Z, Whiteman, D, Wijmenga, C, Wilson, DC, Winkelmann, J, Xavier, RJ, Zhang, B, Zhang, CK, Zhang, H, Zhang, W, Zhao, HY, Zhao, ZZ, Momozawa, Y, Dmitrieva, J, Theatre, E, Deffontaine, V, Rahmouni, S, Charloteaux, B, Crins, F, Docampo, E, Elansary, M, Gori, A, Lecut, C, Mariman, R, Mni, M, Oury, C, Altukhov, I, Alexeev, D, Aulchenko, Y, Amininejad, L, Bouma, G, Hoentjen, F, Lowenberg, M, Oldenburg, B, Pierik, Mj, vander Meulen-de Jong, Ae, van der Woude, Cj, Visschedijk, Mc, Lathrop, M, Hugot, Jp, Weersma, Rk, De Vos, M, Franchimont, D, Vermeire, S, Kubo, M, Louis, E, Georges, M, Abraham, C, Achkar, Jp, Ahmad, T, Ananthakrishnan, An, Andersen, V, Anderson, Ca, Andrews, Jm, Annese, V, Aumais, G, Baidoo, L, Baldassano, Rn, Bampton, Pa, Barclay, M, Barrett, Jc, Bayless, Tm, Bethge, J, Bitton, A, Boucher, G, Brand, S, Brandt, B, Brant, Sr, Buning, C, Chew, A, Cho, Jh, Cleynen, I, Cohain, A, Croft, A, Daly, Mj, D'Amato, M, Danese, S, De Jong, D, Denapiene, G, Denson, La, Devaney, Kl, Dewit, O, D'Inca, R, Dubinsky, M, Duerr, Rh, Edwards, C, Ellinghaus, D, Essers, J, Ferguson, Lr, Festen, Ea, Fleshner, P, Florin, T, Franke, A, Fransen, K, Gearry, R, Gieger, C, Glas, J, Goyette, P, Green, T, Griffiths, Am, Guthery, Sl, Hakonarson, H, Halfvarson, J, Hanigan, K, Haritunians, T, Hart, A, Hawkey, C, Hayward, Nk, Hedl, M, Henderson, P, Hu, Xh, Huang, Hl, Hui, Ky, Imielinski, M, Ippoliti, A, Jonaitis, L, Jostins, L, Karlsen, Th, Kennedy, Na, Khan, Ma, Kiudelis, G, Krishnaprasad, K, Kugathasan, S, Kupcinskas, L, Latiano, A, Laukens, D, Lawrance, Ic, Lee, Jc, Lees, Cw, Leja, M, Van Limbergen, J, Lionetti, P, Liu, Jz, Mahy, G, Mansfield, J, Massey, D, Mathew, Cg, Mcgovern, Dpb, Milgrom, R, Mitrovic, M, Montgomery, Gw, Mowat, C, Newman, W, Ng, A, Ng, Sc, Ng, Sme, Nikolaus, S, Ning, K, Nothen, M, Oikonomou, I, Palmieri, O, Parkes, M, Phillips, A, Ponsioen, Cy, Potocnik, U, Prescott, Nj, Proctor, Dd, Radford-Smith, G, Rahier, Jf, Raychaudhuri, S, Regueiro, M, Rieder, F, Rioux, Jd, Ripke, S, Roberts, R, Russell, Rk, Sanderson, Jd, Sans, M, Satsangi, J, Schadt, Ee, Schreiber, S, Schulte, D, Schumm, Lp, Scott, R, Seielstad, M, Sharma, Y, Silverberg, M, Simms, La, Skieceviciene, J, Spain, Sl, Steinhart, Ah, Stempak, Jm, Stronati, L, Sventoraityte, J, Targan, Sr, Taylor, Km, ter Velde, A, Torkvist, L, Tremelling, M, van Sommeren, S, Vasiliauskas, E, Verspaget, Hw, Walters, T, Wang, K, Wang, Mh, Wei, Z, Whiteman, D, Wijmenga, C, Wilson, Dc, Winkelmann, J, Xavier, Rj, Zhang, B, Zhang, Ck, Zhang, H, Zhang, W, Zhao, Hy, Zhao, Zz, Gastroenterology & Hepatology, UCL - SSS/IREC/GAEN - Pôle d'Hépato-gastro-entérologie, and UCL - (MGD) Service de gastro-entérologie

Subjects
Adult, Male, Multifactorial Inheritance, QUANTITATIVE TRAIT LOCUS, Genotype, SEQUENCING DATA, Quantitative Trait Loci, SUSCEPTIBILITY, Polymorphism, Single Nucleotide, Article, Cohort Studies, CODING VARIANTS, Crohn Disease, 80 and over, Journal Article, Medicine and Health Sciences, LOCUS, Humans, Genetic Predisposition to Disease, Polymorphism, GENOME-WIDE ASSOCIATION, Genetic Association Studies, Aged, Aged, 80 and over, Science & Technology, Female, Gene Expression Profiling, Inflammatory Bowel Diseases, Middle Aged, Sequence Analysis, DNA, COMPLEX TRAITS, Biology and Life Sciences, Single Nucleotide, DNA, CROHNS-DISEASE, Multidisciplinary Sciences, QUANTITATIVE TRAIT, RARE VARIANTS, Science & Technology - Other Topics, LOW-FREQUENCY, Sequence Analysis, INFLAMMATORY-BOWEL-DISEASE
Abstract

GWAS have identified >200 risk loci for Inflammatory Bowel Disease (IBD). The majority of disease associations are known to be driven by regulatory variants. To identify the putative causative genes that are perturbed by these variants, we generate a large transcriptome data set (nine disease-relevant cell types) and identify 23,650 cis-eQTL. We show that these are determined by ∼9720 regulatory modules, of which ∼3000 operate in multiple tissues and ∼970 on multiple genes. We identify regulatory modules that drive the disease association for 63 of the 200 risk loci, and show that these are enriched in multigenic modules. Based on these analyses, we resequence 45 of the corresponding 100 candidate genes in 6600 Crohn disease (CD) cases and 5500 controls, and show with burden tests that they include likely causative genes. Our analyses indicate that ≥10-fold larger sample sizes will be required to demonstrate the causality of individual genes using this approach., Most of the more than 200 known genetic risk loci for inflammatory bowel disease (IBD) reside in regulatory regions. Here, the authors provide eQTL datasets for six circulating immune cell types and ileal, colonic and rectal biopsies to map regulatory modules and identify potential causative genes for IBD.

Published
2018

5. Association of Genetic Variants in NUDT15 With Thiopurine-Induced Myelosuppression in Patients With Inflammatory Bowel Disease

Author

Walker, GJ, Harrison, JW, Heap, GA, Voskuil, MD, Andersen, V, Anderson, CA, Ananthakrishnan, AN, Barrett, JC, Beaugerie, L, Bewshea, CM, Cole, AT, Cummings, FR, Daly, MJ, Ellul, P, Fedorak, RN, Festen, EAM, Florin, TH, Gaya, DR, Halfvarson, J, Hart, AL, Heerasing, NM, Hendy, P, Irving, PM, Jones, SE, Koskela, J, Lindsay, JO, Mansfield, JC, McGovern, D, Parkes, M, Pollok, RCG, Ramakrishnan, S, Rampton, DS, Rivas, MA, Russell, RK, Schultz, M, Sebastian, S, Seksik, P, Singh, A, So, K, Sokol, H, Subramaniam, K, Todd, A, Annese, V, Weersma, RK, Xavier, R, Ward, R, Weedon, MN, Goodhand, JR, Kennedy, NA, Ahmad, T, Holden, AL, Andrews, J, Auth, M, Babu, S, Bampton, P, Banim, P, Barnes, T, Basude, D, Beckly, J, Bell, A, Bell, S, Bhandari, P, Bloom, S, Border, D, Bredin, F, Brookes, MJ, Brown, M, Calvert, C, Campbell, D, Chanchlani, N, Chaudhary, B, Chaudhary, R, Chung-Faye, G, Colleypriest, B, Connor, S, Cooney, R, Cooper, S, Creed, TJ, Croft, N, Cullen, S, D'Amato, M, Dalal, H, Daneshmend, TK, Das, D, Delaney, M, Desilva, S, Dhar, A, Dharmasiri, S, Direkze, N, Dunckley, P, Elphick, D, Everett, SM, Feeney, M, Fell, J, Foley, S, Franke, A, Gavin, D, Gee, I, Ghosh, D, Goldsmith, C, Gorard, D, Gordon, JN, Gore, S, Green, J, Grimes, D, Hamill, G, Harbord, M, Hart, J, Hawkey, C, Iqbal, T, Ireland, A, Johnson, M, Jones, C, Kanegasundaram, S, Karban, A, Katsanos, KH, Kiparissi, F, Kirkham, S, Lal, S, Langlands, S, Lawrance, IC, Lees, CW, Lev-Tzion, R, Levison, S, Lewis, SJ, Li, A, Limdi, J, Lin, S, Lobo, A, Lockett, M, Loehry, J, MacDonald, C, MacFaul, G, Mahmood, T, Mann, S, Mawdsley, J, Mazhar, Z, McGovern, JF, McNair, A, Modi, A, Monahan, K, Moran, A, Morris, M-A, Mortimore, M, Mowat, C, Muhammed, R, Murray, CDR, Olivier, H, Orchard, TR, Panter, S, Patel, V, Phillips, R, Prasad, N, Preston, C, Radford-Smith, G, Rajasekhar, P, Roy, D, Saich, R, Satsangi, J, Schreiber, S, Sen, S, Shah, N, Shenderay, R, Shenoy, A, Shutt, J, Silverberg, M, Simmons, A, Simmons, J, Singh, S, Smith, M, Snook, JA, Sonwalker, S, Stevens, CR, Sturniolo, G, Subramanian, S, Thomas, A, Tighe, M, Torrente, F, Tremelling, M, Tsianos, E, Vani, D, Walsh, A, Watermeyer, G, Watts, D, Watts, G, Weaver, S, Wesley, E, Willmott, A, Yearsley, K, Zambar, V, Zeissig, S, University of Helsinki, Broad Institute, University of Helsinki, Complex Disease Genetics, Institute for Molecular Medicine Finland, Groningen Institute for Gastro Intestinal Genetics and Immunology (3GI), and Simmons, A

Subjects
Male, PREDICTOR, AZATHIOPRINE, Azathioprine, Genome-wide association study, CHILDREN, S-METHYLTRANSFERASE, SUSCEPTIBILITY, Gastroenterology, THERAPY, Leukocyte Count, 0302 clinical medicine, Crohn Disease, Interquartile range, Medicine, Exome, Pyrophosphatases, 11 Medical and Health Sciences, 0303 health sciences, Thiopurine methyltransferase, biology, IBD Pharmacogenetics Study Group, General Medicine, 3. Good health, Editorial Commentary, Cohort, 030211 gastroenterology & hepatology, Female, Life Sciences & Biomedicine, medicine.drug, Adult, medicine.medical_specialty, Adolescent, MERCAPTOPURINE INTOLERANCE, European Continental Ancestry Group, 3121 Internal medicine, Polymorphism, Single Nucleotide, White People, 03 medical and health sciences, Young Adult, Medicine, General & Internal, Internal medicine, General & Internal Medicine, MANAGEMENT, Humans, POLYMORPHISMS, 030304 developmental biology, ACUTE LYMPHOBLASTIC-LEUKEMIA, Science & Technology, business.industry, Case-control study, Odds ratio, Methyltransferases, Sequence Analysis, DNA, Haplotypes, 3121 General medicine, internal medicine and other clinical medicine, Case-Control Studies, biology.protein, Colitis, Ulcerative, business, Pharmacogenetics, Genome-Wide Association Study
Abstract

Funding Information: reported serving as a consultant for AbbVie UK; receiving honoraria from Falk and AbbVie UK; receiving grants from Crohn’s & Colitis UK and Tillott’s Pharmaceuticals; having a fellowship from the UK National Institute for Health Research; and receiving travel reimbursement from Merck Sharp & Dohme and Norgine. Dr Heap reported receiving travel reimbursement from AbbVie; and being a current employee of AbbVie and owning stock in the company. Dr Andersen reported receiving personal fees from Merck Sharp & Dohme and Janssen. Dr Ananthakrishnan reported receiving a grant from Pfizer; and receiving personal fees from Takeda. Dr Beaugerie reported receiving advisory board fees from Allergan, Janssen, and Pfizer; receiving a grant from Hospira; and receiving grants and honoraria from AbbVie, Merck Sharp & Dohme, Ferring, Takeda, and Tillott’s Pharmaceuticals. Dr Cummings reported receiving personal fees from AbbVie, Takeda, Biogen, Janssen, Merck Sharp & Dohme, Amgen, Hakim Pharmaceuticals, and Pfizer/Hospira; and receiving grants from Takeda, Biogen, AstraZeneca, and Pfizer/Hospira. Dr Halfvarson reported receiving personal fees from AbbVie, Hospira, Janssen, Medivir, Merck Sharp & Dohme, Pfizer, RenapharmaVifor, Takeda, Tillott’s Pharmaceuticals, Celgene, Sandoz, and Shire; and receiving grants from Janssen, Merck Sharp & Dohme, and Takeda. Dr Hart reported receiving advisory board fees from AbbVie, Atlantic, Bristol-Myers Squibb, Celltrion, Janssen, Merck Sharp & Dohme, Pfizer, Shire, and Takeda; receiving honoraria from Falk and Ferring; and receiving a grant from Takeda. Dr Irving reported receiving personal fees from Janssen, AbbVie, Takeda, Ferring, Pfizer, Lilly, Merck Sharp & Dohme, Samsung, and Sandoz; and receiving grants from Takeda and Merck Sharp & Dohme. Dr Lindsay reported receiving advisory board fees from Atlantic Health, AbbVie UK/global, Merck Sharp & Dohme, Shire UK, Vifor Pharma, Ferring International, Celltrion, Takeda, Napp, Pfizer, and Janssen; serving as a consultant for AbbVie UK/global, Takeda, and Pfizer; receiving grants from Shire UK, AbbVie UK/global, Warner Chilcott, Funding Information: Takeda, Hospira, Ferring International, and Merck Sharp & Dohme; receiving honoraria from Takeda, Cornerstones US, Tillott’s Pharmaceuticals, Napp, Shire International, Janssen, AbbVie, and Pfizer; and receiving travel reimbursement from AbbVie UK, Merck Sharp & Dohme, Warner Chilcott, Takeda, and Shire International. Dr McGovern reported receiving grants from the National Institutes of Health, Helmsley Charitable Trust, and Janssen; and serving as a consultant for Pfizer, Q Biologics, Cidara, Gilead, and Janssen. Dr Seksik reported receiving advisory board fees from Astellas; receiving honoraria from Takeda, AbbVie, and Ferring; and receiving grants from Merck Sharp & Dohme and Biocodex. Dr Sokol reported receiving grants from Biocodex, Danone, and BiomX; serving as a consultant for Enterome, Takeda, AbbVie, Roche, Amgen, Danone, BiomX, Ferring, Bristol-Myers Squibb, Astellas, Merck Sharp & Dohme, Novartis, Tillott’s Pharmaceuticals, and Biose; and being the co-founder of Nextbiotix. Dr Annese reported receiving advisory board fees from Takeda, AbbVie, and Medtronic; and receiving honoraria from Janssen, Takeda, AbbVie, and Medtronic. Dr Weersma reported receiving grants from Takeda, Ferring, and Tramedico; and receiving personal fees from AbbVie. Dr Goodhand reported receiving honoraria from Falk, AbbVie, and Shield Therapeutics. Dr Kennedy reported serving as a consultant for Falk; receiving honoraria from Falk, Allergan, Pharmacosmos, and Takeda; and being a deputy editor of Alimentary Pharmacology & Therapeutics. Dr Ahmad reported receiving unrestricted grants, advisory board fees, speaker honoraria, and support to attend international meetings from AbbVie, Merck Sharp & Dohme, Janssen, Takeda, Ferring, Tillott’s Pharmaceuticals, Ferring, Pfizer, Napp, Celltrion, and Hospira. No other disclosures were reported. Funding Information: Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, California), Alistair McNair, PhD (Queen Elizabeth Hospital, London, UK), Anita Modi, MD (Luton and Dunstable University Hospital, Luton, UK), Kevin Monahan, PhD (West Middlesex University Hospital, Middlesex, UK), Alex Moran, MD (Northern Devon Healthcare Trust, Barnstaple, UK), Mary-Anne Morris, MD (Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, UK), Marianne Mortimore, MBBS (Mater Research Institute, University of Queensland, South Brisbane, Australia), Craig Mowat, MD (Ninewells Hospital, NHS Tayside, Dundee, UK), Rafeeq Muhammed, MD (Birmingham Children's Hospital, Birmingham, UK), Charles D. R. Murray, PhD (Royal Free Hospital, Royal Free London NHS Foundation Trust, London, UK), Hanlie Olivier (IBD Pharmacogenetics Group, University of Exeter, Exeter, UK), Timothy R. Orchard, DM (Imperial College Healthcare NHS Trust, London, UK), Simon Panter, MD (South Tyneside District Hospital, South Tyneside, UK), Vinod Patel, MBBS (Tameside and Glossop Integrated Care NHS Foundation Trust, Ashton-under-Lyne, UK), Rosemary Phillips, MD (Princess Alexandra Hospital, Essex, UK), Neeraj Prasad, MSc (Wrightington Hospital, Wrightington, UK), Cathryn Preston, MBChB (Bradford Royal Infirmary, Bradford, UK), Graham Radford-Smith, PhD (Royal Brisbane and Women’s Hospital, Brisbane, Australia), Praveen Rajasekhar, MD (Northumbria NHS Trust, Tyne and Wear, UK), Dipak Roy, PhD (Tameside and Glossop Integrated Care NHS Foundation Trust, Ashton-under-Lyne, UK), Rebecca Saich, PhD (Basingstoke and North Hampshire Hospital, Basingstoke, UK), Jack Satsangi, PhD (Western General Hospital, NHS Lothian, Edinburgh, UK), Stefan Schreiber, PhD (Kiel University, Kiel, Germany), Sandip Sen, MD (Royal Stoke University Hospital, Stoke-on-Trent, UK), Neil Shah, MD (Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK), Richard Shenderay, MBBS (Airedale NHS Foundation Trust, Keighley, UK), Acuth Shenoy, MD (Colchester Hospital University NHS Foundation Trust, Colchester, UK), James Shutt, DM (Dorset County Hospital NHS Foundation Trust, Dorchester, UK), Mark Silverberg, PhD (Mount Sinai Hospital, Toronto, Ontario, Canada), Alison Simmons, PhD (Oxford University Hospitals, Oxford, UK), Jonathan Simmons, DM (Royal Berkshire Hospital, Royal Berkshire NHS Foundation Trust, Reading, UK), Salil Singh, PhD (Bolton NHS Foundation Trust, Bolton, UK), Malcolm Smith, MBChB (Aberdeen Royal Infirmary, Aberdeen, UK), Mark Smith, MD (Shrewsbury and Telford Hospital NHS Trust, Shrewsbury, UK), Melissa Smith, MB (Royal Sussex County Hospital, Brighton, UK), Jonathon A. Snook, DPhil (Poole Hospital NHS Foundation Trust, Poole, UK), Sunil Sonwalker, MD (Calderdale Royal Hospital, Halifax, UK), Christine R. Stevens, PhD (Broad Institute, Harvard University, Cambridge, Massachusetts), Giacomo Sturniolo, PhD (Univerita di Padova, Padova, Italy), Sreedhar Subramanian, MD (Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK), Amanda Thomas, MBBS (Department of Gastroenterology, Royal Devon and Exeter Hospital NHS Foundation Trust, Exeter, UK), Mark Tighe, BM (Poole Hospital NHS Foundation Trust, Poole, UK), Franco Torrente, MD (Department of Gastroenterology, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK), Mark Tremelling, MD (Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, UK), Epameinondas Tsianos, PhD (University Hospital of Ioannina, Ioannina, Greece), Deven Vani, MD (Mid Yorkshire Hospitals NHS Trust, Wakefield, UK), Alissa Walsh, MBBS (St Vincent’s Hospital, Sydney, Australia), Gillian Watermeyer, MBChB (Groote Schuur Hospital, Cape Town, South Africa), David Watts, MBChB (Forth Valley Royal Hospital, Larbert, UK), Gill Watts, MD (Wythenshawe Hospital, South Manchester, UK), Sean Weaver, PhD (Royal Bournemouth General Hospital, Bournemouth, UK), Emma Wesley, MBBS (Musgrove Park Hospital, Taunton and Somerset NHS Hospitals, Taunton, UK), Anne Willmott, MBChB (Leicester Royal Infirmary-Paediatric, Leicester, UK), Karen Yearsley, BM (Nevill Hall Hospital, Abergavenny, UK), Veena Zambar, MBBS (Leeds General Infirmary, Leeds, UK), and Sebastian Zeissig, MD (University Medical Center Schleswig-Hostein, Kiel, Germany). These individuals identified and recruited patient s to the study and provided comments on a draft of the manuscript. Funding Information: Adverse Events Consortium funded the sample collection and genotyping at the Broad Institute. The UK National Institute for Health Research provided research nurse support to facilitate recruitment at all UK research sites. Crohn’s & Colitis UK and forCrohns provided funding support and publicized this study to their members. The Exeter National Institute for Health Research Clinical Research Facility provided DNA storage and management. Institutional strategic support award WT097835MF from Wellcome Trust supported the management of the study. Samples from Cedars-Sinai were collected and processed through the MIRIAD biobank that was funded by grant P01DK046763 from the National Institutes of Health. Publisher Copyright: © 2019 American Medical Association. All rights reserved. IMPORTANCE Use of thiopurines may be limited by myelosuppression. TPMT pharmacogenetic testing identifies only 25% of at-risk patients of European ancestry. Among patients of East Asian ancestry, NUDT15 variants are associated with thiopurine-induced myelosuppression (TIM). OBJECTIVE To identify genetic variants associated with TIM among patients of European ancestry with inflammatory bowel disease (IBD). DESIGN, SETTING, AND PARTICIPANTS Case-control study of 491 patients affected by TIM and 679 thiopurine-tolerant unaffected patients who were recruited from 89 international sites between March 2012 and November 2015. Genome-wide association studies (GWAS) and exome-wide association studies (EWAS) were conducted in patients of European ancestry. The replication cohort comprised 73 patients affected by TIM and 840 thiopurine-tolerant unaffected patients. EXPOSURES Genetic variants associated with TIM. MAIN OUTCOMES AND MEASURES Thiopurine-induced myelosuppression, defined as a decline in absolute white blood cell count to 2.5 x 10(9)/L or less or a decline in absolute neutrophil cell count to 1.0 x 10(9)/L or less leading to a dose reduction or drug withdrawal. RESULTS Among 1077 patients (398 affected and 679 unaffected; median age at IBD diagnosis, 31.0 years [interquartile range, 21.2 to 44.1 years]; 540 [50%] women; 602 [56%] diagnosed as having Crohn disease), 919 (311 affected and 608 unaffected) were included in the GWAS analysis and 961 (328 affected and 633 unaffected) in the EWAS analysis. The GWAS analysis confirmed association of TPMT (chromosome 6, rs11969064) with TIM (30.5% [95/311] affected vs 16.4% [100/608] unaffected patients; odds ratio [OR], 2.3 [95% CI, 1.7 to 3.1], P = 5.2 x 10(-9)). The EWAS analysis demonstrated an association with an in-frame deletion in NUDT15 (chromosome 13, rs746071566) and TIM (5.8% [19/328] affected vs 0.2% [1/633] unaffected patients; OR, 38.2 [95% CI, 5.1 to 286.1], P = 1.3 x 10(-8)), which was replicated in a different cohort (2.7% [2/73] affected vs 0.2% [2/840] unaffected patients; OR, 11.8 [95% CI, 1.6 to 85.0], P = .03). Carriage of any of 3 coding NUDT15 variants was associated with an increased risk (OR, 27.3 [95% CI, 9.3 to 116.7], P = 1.1 x 10(-7)) of TIM, independent of TPMT genotype and thiopurine dose. CONCLUSIONS AND RELEVANCE Among patients of European ancestry with IBD, variants in NUDT15 were associated with increased risk of TIM. These findings suggest that NUDT15 genotyping may be considered prior to initiation of thiopurine therapy; however, further study including additional validation in independent cohorts is required.

Published
2019

6. Genome-wide association study implicates immune activation of multiple integrin genes in inflammatory bowel disease

Author

De Lange, KM, Moutsianas, L, Lee, JC, Lamb, CA, Luo, Y, Kennedy, NA, Jostins, L, Rice, DL, Gutierrez-Achury, J, Ji, S-G, Heap, G, Nimmo, ER, Edwards, C, Henderson, P, Mowat, C, Sanderson, J, Satsangi, J, Simmons, A, Wilson, DC, Tremelling, M, Hart, A, Mathew, CG, Newman, WG, Parkes, M, Lees, CW, Uhlig, H, Hawkey, C, Prescott, NJ, Ahmad, T, Mansfield, JC, Anderson, CA, and Barrett, JC

Subjects
Inflammation, Integrins, Quantitative Trait Loci, Humans, Genetic Predisposition to Disease, Inflammatory Bowel Diseases, Polymorphism, Single Nucleotide, Alleles, Genome-Wide Association Study
Abstract

Genetic association studies have identified 215 risk loci for inflammatory bowel disease, thereby uncovering fundamental aspects of its molecular biology. We performed a genome-wide association study of 25,305 individuals and conducted a meta-analysis with published summary statistics, yielding a total sample size of 59,957 subjects. We identified 25 new susceptibility loci, 3 of which contain integrin genes that encode proteins in pathways that have been identified as important therapeutic targets in inflammatory bowel disease. The associated variants are correlated with expression changes in response to immune stimulus at two of these genes ($\textit{ITGA4 }$ and $\textit{ITGB8}$) and at previously implicated loci ($\textit{ITGAL }$and $\textit{ICAM1}$). In all four cases, the expression-increasing allele also increases disease risk. We also identified likely causal missense variants in a gene implicated in primary immune deficiency, $\textit{PLCG2}$, and a negative regulator of inflammation, $\textit{SLAMF8}$. Our results demonstrate that new associations at common variants continue to identify genes relevant to therapeutic target identification and prioritization.

Published
2017
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7. Inherited determinants of Crohn's disease and ulcerative colitis phenotypes:a genetic association study

Author

Cleynen, Isabelle, Boucher, Gabrielle, Jostins, Luke, Schumm, L. Philip, Zeissig, Sebastian, Ahmad, Tariq, Andersen, Vibeke, Andrews, Jane M., Annese, Vito, Brand, Stephan, Brant, Steven R., Cho, Judy H., Daly, Mark J., Dubinsky, Marla, Duerr, Richard H., Ferguson, Lynnette R., Franke, Andre, Gearry, Richard B., Goyette, Philippe, Hakonarson, Hakon, Halfvarson, Jonas, Hov, Johannes R., Huang, Hailang, Kennedy, Nicholas A., Kupcinskas, Limas, Lawrance, Ian C., Lee, James C., Satsangi, Jack, Schreiber, Stephan, Théâtre, Emilie, Van Der Meulen De Jong, Andrea E, Weersma, Rinse K., Wilson, David C., Parkes, Miles, Vermeire, Severine, Rioux, John D., Mansfield, John, Silverberg, Mark S., Radford Smith, Graham, Mcgovern, Dermot P. B., Barrett, Jeffrey C., Lees, Charlie W, Abraham, C, Achkar, Jp, Ahmad, T, Amininejad, L, Ananthakrishnan, An, Andersen, V, Anderson, Ca, Andrews, Jm, Annese, V, Aumais, G, Baidoo, L, Baldassano, Rn, Bampton, Pa, Barclay, M, Barrett, Jc, Bayless, Tm, Bethge, J, Bis, Jc, Bitton, A, Boucher, G, Brand, S, Brandt, B, Brant, Sr, Büning, C, Chew, A, Cho, Jh, Cleynen, I, Cohain, A, Croft, A, Daly, Mj, D'Amato, M, Danese, S, De Jong, D, De Vos, M, Denapiene, G, Denson, La, Devaney, K, Dewit, O, D'Inca, R, Dubinsky, M, Duerr, Rh, Edwards, C, Ellinghaus, D, Essers, J, Ferguson, Lr, Festen, Ea, Fleshner, P, Florin, T, Franchimont, D, Franke, A, Fransen, K, Gearry, R, Georges, M, Gieger, C, Glas, J, Goyette, P, Green, T, Griffiths, Am, Guthery, Sl, Hakonarson, H, Halfvarson, J, Hanigan, K, Haritunians, T, Hart, A, Hawkey, C, Hayward, Nk, Hedl, M, Henderson, P, Hu, X, Huang, H, Hui, Ky, Imielinski, M, Ippoliti, A, Jonaitis, L, Jostins, L, Karlsen, Th, Kennedy, Na, Khan, Ma, Kiudelis, G, Krishnaprasad, K, Kugathasan, S, Kupcinskas, L, Latiano, A, Laukens, D, Lawrance, Ic, Lee, Jc, Lees, Cw, Leja, M, Van Limbergen, J, Lionetti, P, Liu, Jz, Louis, E, Mahy, G, Mansfield, J, Massey, D, Mathew, Cg, Mcgovern, Dp, Milgrom, R, Mitrovic, M, Montgomery, Gw, Mowat, C, Newman, W, Ng, A, Ng, Sc, Ng, Sm, Nikolaus, S, Ning, K, Nöthen, M, Oikonomou, I, Palmieri, O, Parkes, M, Phillips, A, Ponsioen, Cy, Potocnik, U, Prescott, Nj, Proctor, Dd, Radford Smith, G, Rahier, Jf, Raychaudhuri, S, Regueiro, M, Rieder, F, Rioux, Jd, Ripke, S, Roberts, R, Russell, Rk, Sanderson, Jd, Sans, M, Satsangi, J, Schadt, Ee, Schreiber, S, Schumm, Lp, Scott, R, Seielstad, M, Sharma, Y, Silverberg, Ms, Simms, La, Skieceviciene, J, Spain, Sl, Steinhart, A, Stempak, Jm, Stronati, Laura, Sventoraityte, J, Targan, Sr, Taylor, Km, ter Velde, A, Theatre, E, Torkvist, L, Tremelling, M, van der Meulen, A, van Sommeren, S, Vasiliauskas, E, Vermeire, S, Verspaget, Hw, Walters, T, Wang, K, Wang, Mh, Weersma, Rk, Wei, Z, Whiteman, D, Wijmenga, C, Wilson, Dc, Winkelmann, J, Xavier, Rj, Zeissig, S, Zhang, B, Zhang, Ck, Zhang, H, Zhang, W, Zhao, H, Zhao, Zz, UCL - SSS/IREC/GAEN - Pôle d'Hépato-gastro-entérologie, UCL - (MGD) Service de gastro-entérologie, and Groningen Institute for Gastro Intestinal Genetics and Immunology (3GI)

Subjects
Male, 0301 basic medicine, CLINICAL-COURSE, Nod2 Signaling Adaptor Protein, Disease, SUSCEPTIBILITY, Inflammatory bowel disease, Major Histocompatibility Complex, 0302 clinical medicine, Crohn Disease, Maintenance therapy, NOD2, Medicine and Health Sciences, POPULATION, Immunoassay, RISK, Medicine(all), education.field_of_study, Crohn's disease, Hepatocyte Growth Factor, Medicine (all), INDUCTION, Articles, General Medicine, PRIMARY SCLEROSING CHOLANGITIS, Ulcerative colitis, 3. Good health, Phenotype, Female, 030211 gastroenterology & hepatology, Adult, medicine.medical_specialty, MAINTENANCE THERAPY, Genotype, Population, Polymorphism, Single Nucleotide, Risk Assessment, CLASSIFICATION, Primary sclerosing cholangitis, Young Adult, 03 medical and health sciences, inflammatory bowel disease, Proto-Oncogene Proteins, Internal medicine, medicine, Humans, Genetic Predisposition to Disease, education, Alleles, Genetic Association Studies, business.industry, medicine.disease, digestive system diseases, 030104 developmental biology, Immunology, Colitis, Ulcerative, business, FOLLOW-UP, HLA-DRB1 Chains, INFLAMMATORY-BOWEL-DISEASE
Abstract

Background: Crohn's disease and ulcerative colitis are the two major forms of inflammatory bowel disease; treatment strategies have historically been determined by this binary categorisation. Genetic studies have identified 163 susceptibility loci for inflammatory bowel disease, mostly shared between Crohn's disease and ulcerative colitis. We undertook the largest genotype association study, to date, in widely used clinical subphenotypes of inflammatory bowel disease with the goal of further understanding the biological relations between diseases.Methods: This study included patients from 49 centres in 16 countries in Europe, North America, and Australasia. We applied the Montreal classification system of inflammatory bowel disease subphenotypes to 34 819 patients (19 713 with Crohn's disease, 14 683 with ulcerative colitis) genotyped on the Immunochip array. We tested for genotype–phenotype associations across 156 154 genetic variants. We generated genetic risk scores by combining information from all known inflammatory bowel disease associations to summarise the total load of genetic risk for a particular phenotype. We used these risk scores to test the hypothesis that colonic Crohn's disease, ileal Crohn's disease, and ulcerative colitis are all genetically distinct from each other, and to attempt to identify patients with a mismatch between clinical diagnosis and genetic risk profile.Findings: After quality control, the primary analysis included 29 838 patients (16 902 with Crohn's disease, 12 597 with ulcerative colitis). Three loci (NOD2, MHC, and MST1 3p21) were associated with subphenotypes of inflammatory bowel disease, mainly disease location (essentially fixed over time; median follow-up of 10·5 years). Little or no genetic association with disease behaviour (which changed dramatically over time) remained after conditioning on disease location and age at onset. The genetic risk score representing all known risk alleles for inflammatory bowel disease showed strong association with disease subphenotype (p=1·65 × 10−78), even after exclusion of NOD2, MHC, and 3p21 (p=9·23 × 10−18). Predictive models based on the genetic risk score strongly distinguished colonic from ileal Crohn's disease. Our genetic risk score could also identify a small number of patients with discrepant genetic risk profiles who were significantly more likely to have a revised diagnosis after follow-up (p=6·8 × 10−4).Interpretation: Our data support a continuum of disorders within inflammatory bowel disease, much better explained by three groups (ileal Crohn's disease, colonic Crohn's disease, and ulcerative colitis) than by Crohn's disease and ulcerative colitis as currently defined. Disease location is an intrinsic aspect of a patient's disease, in part genetically determined, and the major driver to changes in disease behaviour over time.Funding: International Inflammatory Bowel Disease Genetics Consortium members funding sources (see Acknowledgments for full list).

Published
2016

8. Host-microbe interactions have shaped the genetic architecture of inflammatory bowel disease

Author

Jostins, Luke, Ripke, Stephan, Weersma, Rinse K., Duerr, Richard H., Mcgovern, Dermot P., Hui, Ken Y., Lee, James C., Philip Schumm, L., Sharma, Yashoda, Anderson, Carl A., Essers, Jonah, Mitrovic, Mitja, Ning, Kaida, Cleynen, Isabelle, Theatre, Emilie, Spain, Sarah L., Raychaudhuri, Soumya, Goyette, Philippe, Wei, Zhi, Abraham, Clara, Achkar, Jean Paul, Ahmad, Tariq, Amininejad, Leila, Ananthakrishnan, Ashwin N., Andersen, Vibeke, Andrews, Jane M., Baidoo, Leonard, Balschun, Tobias, Bampton, Peter A., Bitton, Alain, Boucher, Gabrielle, Brand, Stephan, Büning, Carsten, Cohain, Ariella, Cichon, Sven, D'Amato, Mauro, De Jong, Dirk, Devaney, Kathy L., Dubinsky, Marla, Edwards, Cathryn, Ellinghaus, David, Ferguson, Lynnette R., Franchimont, Denis, Fransen, Karin, Gearry, Richard, Georges, Michel, Gieger, Christian, Glas, Jürgen, Haritunians, Talin, Hart, Ailsa, Hawkey, Chris, Hedl, Matija, Xinli, Hu, Karlsen, Tom H., Kupcinskas, Limas, Kugathasan, Subra, Latiano, Anna, Laukens, Debby, Lawrance, Ian C., Lees, Charlie W., Louis, Edouard, Mahy, Gillian, Mansfield, John, Morgan, Angharad R., Mowat, Craig, Newman, William, Palmieri, Orazio, Ponsioen, Cyriel Y., Potocnik, Uros, Prescott, Natalie J., Regueiro, Miguel, Rotter, Jerome I., Russell, Richard K., Sanderson, Jeremy D., Sans, Miquel, Satsangi, Jack, Schreiber, Stefan, Simms, Lisa A., Sventoraityte, Jurgita, Targan, Stephan R., Taylor, Kent D., Tremelling, Mark, Verspaget, Hein W., De Vos, Martine, Wijmenga, Cisca, Wilson, David C., Winkelmann, Juliane, Xavier, Ramnik J., Zeissig, Sebastian, Zhang, Bin, Zhang, Clarence K., Zhao, Hongyu, Silverberg, Mark S., Annese, Vito, Hakonarson, Hakon, Brant, Steven R., Radford Smith, Graham, Mathew, Christopher G., Rioux, John D., Schadt, Eric E., Daly, Mark J., Franke, Andre, Parkes, Miles, Vermeire, Severine, Barrett, Jeffrey C., Cho, Judy H., Barclay, M, Peyrin Biroulet, L, Chamaillard, M, Colombel, Jf, Cottone, M, Croft, A, D'Incà, R, Halfvarson J, Hanigan K, Henderson, P, Hugot, Jp, Karban, A, Kennedy, Na, Khan, Ma, Lémann, M, Levine, A, Massey, D, Milla, M, Montgomery, Gw, Ng, Sm, Oikonomou, I, Peeters, H, Proctor, Dd, Rahier, Jf, Roberts, R, Rutgeerts, P, Seibold, F, Stronati, Laura, Taylor, Km, Törkvist, L, Ublick, K, Van Limbergen, J, Van Gossum, A, Vatn, Mh, Zhang, H, Zhang, W, Andrews, Jm, Bampton, Pa, Florin, Th, Gearry, R, Krishnaprasad, K, Lawrance, Ic, Mahy, G, Radford Smith, G, Roberts, Rl, Simms, La, Amininijad, L, Cleynen, I, Dewit, O, Franchimont, D, Georges, M, Laukens, D, Theatre, E, Vermeire, S, Aumais, G, Baidoo, L, Barrie AM 3rd, Beck, K, Bernard, Ej, Binion, Dg, Bitton, A, Brant, Sr, Cho, Jh, Cohen, A, Croitoru, K, Daly, Mj, Datta, Lw, Deslandres, C, Duerr, Rh, Dutridge, D, Ferguson, J, Fultz, J, Goyette, P, Greenberg, Gr, Haritunians, T, Jobin, G, Katz, S, Lahaie, Rg, Mcgovern, Dp, Nelson, L, Ning, K, Paré, P, Regueiro, Md, Rioux, Jd, Ruggiero, E, Schumm, L, Schwartz, M, Scott, R, Sharma, Y, Silverberg, Ms, Spears, D, Steinhart, A, Stempak, Jm, Swoger, Jm, Tsagarelis, C, Zhang, C, Zhao, H, Aerts, J, Ahmad, T, Arbury, H, Attwood, A, Auton, A, Ball, Sg, Balmforth, Aj, Barnes, C, Barrett, Jc, Barroso, I, Barton, A, Bennett, Aj, Bhaskar, S, Blaszczyk, K, Bowes, J, Brand, Oj, Braund, Ps, Bredin, F, Breen, G, Brown, Mj, Bruce, In, Bull, J, Burren, Os, Burton, J, Byrnes, J, Caesar, S, Cardin, N, Clee, Cm, Coffey, Aj, Connell, Jm, Conrad, Df, Cooper, Jd, Dominiczak, Af, Downes, K, Drummond, He, Dudakia, D, Dunham, A, Ebbs, B, Eccles, D, Edkins, S, Edwards, C, Elliot, A, Emery, P, Evans, Dm, Evans, G, Eyre, S, Farmer, A, Ferrier, In, Flynn, E, Forbes, A, Forty, L, Franklyn, Ja, Frayling, Tm, Freathy, Rm, Giannoulatou, E, Gibbs, P, Gilbert, P, Gordon Smith, K, Gray, E, Green, E, Groves, Cj, Grozeva, D, Gwilliam, R, Hall, A, Hammond, N, Hardy, M, Harrison, P, Hassanali, N, Hebaishi, H, Hines, S, Hinks, A, Hitman, Ga, Hocking, L, Holmes, C, Howard, E, Howard, P, Howson, Jm, Hughes, D, Hunt, S, Isaacs, Jd, Jain, M, Jewell, Dp, Johnson, T, Jolley, Jd, Jones, Ir, Jones, La, Kirov, G, Langford, Cf, Lango Allen, H, Lathrop, Gm, Lee, J, Lee, Kl, Lees, C, Lewis, K, Lindgren, Cm, Maisuria Armer, M, Maller, J, Mansfield, J, Marchini, Jl, Martin, P, Massey, Dc, Mcardle, Wl, Mcguffin, P, Mclay, Ke, Mcvean, G, Mentzer, A, Mimmack, Ml, Morgan, Ae, Morris, Ap, Mowat, C, Munroe, Pb, Myers, S, Newman, W, Nimmo, Er, O'Donovan, Mc, Onipinla, A, Ovington, Nr, Owen, Mj, Palin, K, Palotie, A, Parnell, K, Pearson, R, Pernet, D, Perry, Jr, Phillips, A, Plagnol, V, Prescott, Nj, Prokopenko, I, Quail, Ma, Rafelt, S, Rayner, Nw, Reid, Dm, Renwick, A, Ring, Sm, Robertson, N, Robson, S, Russell, E, St Clair, D, Sambrook, Jg, Sanderson, Jd, Sawcer, Sj, Schuilenburg, H, Scott, Ce, Seal, S, Shaw Hawkins, S, Shields, Bm, Simmonds, Mj, Smyth, Dj, Somaskantharajah, E, Spanova, K, Steer, S, Stephens, J, Stevens, He, Stirrups, K, Stone, Ma, Strachan, Dp, Su, Z, Symmons, Dp, Thompson, Jr, Thomson, W, Tobin, Md, Travers, Me, Turnbull, C, Vukcevic, D, Wain, Lv, Walker, M, Walker, Nm, Wallace, C, Warren Perry, M, Watkins, Na, Webster, J, Weedon, Mn, Wilson, Ag, Woodburn, M, Wordsworth, Bp, Yau, C, Young, Ah, Zeggini, E, Brown, Ma, Burton, Pr, Caulfield, Mj, Compston, A, Farrall, M, Gough, Sc, Hall, As, Hattersley, At, Hill, Av, Mathew, Cg, Pembrey, M, Satsangi, J, Stratton, Mr, Worthington, J, Hurles, Me, Duncanson, A, Ouwehand, Wh, Parkes, M, Rahman, N, Todd, Ja, Samani, Nj, Kwiatkowski, Dp, Mccarthy, Mi, Craddock, N, Deloukas, P, Donnelly, P, Blackwell, Jm, Bramon, E, Casas, Jp, Corvin, A, Jankowski, J, Markus, Hs, Palmer, Cn, Plomin, R, Rautanen, A, Trembath, Rc, Viswanathan, Ac, Wood, Nw, Spencer, Cc, Band, G, Bellenguez, C, Freeman, C, Hellenthal, G, Pirinen, M, Strange, A, Blackburn, H, Bumpstead, Sj, Dronov, S, Gillman, M, Jayakumar, A, Mccann, Ot, Liddle, J, Potter, Sc, Ravindrarajah, R, Ricketts, M, Waller, M, Weston, P, Widaa, S, Whittaker, P., AGEM - Amsterdam Gastroenterology Endocrinology Metabolism, Gastroenterology and Hepatology, and Groningen Institute for Gastro Intestinal Genetics and Immunology (3GI)

Subjects
Genome-wide association study, Disease, SUSCEPTIBILITY, Inflammatory bowel disease, NUMBER, 0302 clinical medicine, Crohn Disease, NETWORK, Genetics, 0303 health sciences, Multidisciplinary, Genomics, Ulcerative colitis, 3. Good health, Colitis, Ulcerative, Genetic Predisposition to Disease, Genome, Human, Haplotypes, Humans, Inflammatory Bowel Diseases, Mycobacterium, Mycobacterium Infections, Mycobacterium tuberculosis, Phenotype, Polymorphism, Single Nucleotide, Reproducibility of Results, Genome-Wide Association Study, Host-Pathogen Interactions, IRGM, Medical genetics, 030211 gastroenterology & hepatology, EXPRESSION, medicine.medical_specialty, Immunology, Biology, Molecular gastro-enterology and hepatology Pathogenesis and modulation of inflammation [IGMD 2], TUBERCULOSIS, 03 medical and health sciences, Medical research, medicine, Allele, METAANALYSIS, 030304 developmental biology, HYPER-IGE SYNDROME, MUTATIONS, medicine.disease, RISK LOCI, Genetic architecture, digestive system diseases
Abstract

Crohn's disease and ulcerative colitis, the two common forms of inflammatory bowel disease (IBD), affect over 2.5 million people of European ancestry, with rising prevalence in other populations(1). Genome-wide association studies and subsequent meta-analyses of these two diseases(2,3) as separate phenotypes have implicated previously unsuspected mechanisms, such as autophagy(4), in their pathogenesis and showed that some IBD loci are shared with other inflammatory diseases(5). Here we expand on the knowledge of relevant pathways by undertaking a meta-analysis of Crohn's disease and ulcerative colitis genome-wide association scans, followed by extensive validation of significant findings, with a combined total of more than 75,000 cases and controls. We identify 71 new associations, for a total of 163 IBD loci, that meet genome-wide significance thresholds. Most loci contribute to both phenotypes, and both directional (consistently favouring one allele over the course of human history) and balancing (favouring the retention of both alleles within populations) selection effects are evident. Many IBD loci are also implicated in other immune-mediated disorders, most notably with ankylosing spondylitis and psoriasis. We also observe considerable overlap between susceptibility loci for IBD and mycobacterial infection. Gene co-expression network analysis emphasizes this relationship, with pathways shared between host responses to mycobacteria and those predisposing to IBD.

Published
2012

9. Comparative performances of machine learning methods for classifying Crohn Disease patients using genome-wide genotyping data

Author

Romagnoni, A., Jegou, S., Van Steen, K., Wainrib, G., Hugot, J. -P., Peyrin-Biroulet, L., Chamaillard, M., Colombel, J. -F., Cottone, M., D'Amato, M., D'Inca, R., Halfvarson, J., Henderson, P., Karban, A., Kennedy, N. A., Khan, M. A., Lemann, M., Levine, A., Massey, D., Milla, M., S. M. E., Ng, Oikonomou, I., Peeters, H., Proctor, D. D., Rahier, J. -F., Rutgeerts, P., Seibold, F., Stronati, L., Taylor, K. M., Torkvist, L., Ublick, K., Van Limbergen, J., Van Gossum, A., Vatn, M. H., Zhang, H., Zhang, W., Andrews, J. M., Bampton, P. A., Barclay, M., Florin, T. H., Gearry, R., Krishnaprasad, K., Lawrance, I. C., Mahy, G., Montgomery, G. W., Radford-Smith, G., Roberts, R. L., Simms, L. A., Hanigan, K., Croft, A., Amininijad, L., Cleynen, I., Dewit, O., Franchimont, D., Georges, M., Laukens, D., Theatre, E., Vermeire, S., Aumais, G., Baidoo, L., Barrie, A. M., Beck, K., Bernard, E. -J., Binion, D. G., Bitton, A., Brant, S. R., Cho, J. H., Cohen, A., Croitoru, K., Daly, M. J., Datta, L. W., Deslandres, C., Duerr, R. H., Dutridge, D., Ferguson, J., Fultz, J., Goyette, P., Greenberg, G. R., Haritunians, T., Jobin, G., Katz, S., Lahaie, R. G., Mcgovern, D. P., Nelson, L., S. M., Ng, Ning, K., Pare, P., Regueiro, M. D., Rioux, J. D., Ruggiero, E., Schumm, L. P., Schwartz, M., Scott, R., Sharma, Y., Silverberg, M. S., Spears, D., Steinhart, A. H., Stempak, J. M., Swoger, J. M., Tsagarelis, C., Zhang, C., Zhao, H., Aerts, J., Ahmad, T., Arbury, H., Attwood, A., Auton, A., Ball, S. G., Balmforth, A. J., Barnes, C., Barrett, J. C., Barroso, I., Barton, A., Bennett, A. J., Bhaskar, S., Blaszczyk, K., Bowes, J., Brand, O. J., Braund, P. S., Bredin, F., Breen, G., Brown, M. J., Bruce, I. N., Bull, J., Burren, O. S., Burton, J., Byrnes, J., Caesar, S., Cardin, N., Clee, C. M., Coffey, A. J., MC Connell, J., Conrad, D. F., Cooper, J. D., Dominiczak, A. F., Downes, K., Drummond, H. E., Dudakia, D., Dunham, A., Ebbs, B., Eccles, D., Edkins, S., Edwards, C., Elliot, A., Emery, P., Evans, D. M., Evans, G., Eyre, S., Farmer, A., Ferrier, I. N., Flynn, E., Forbes, A., Forty, L., Franklyn, J. A., Frayling, T. M., Freathy, R. M., Giannoulatou, E., Gibbs, P., Gilbert, P., Gordon-Smith, K., Gray, E., Green, E., Groves, C. J., Grozeva, D., Gwilliam, R., Hall, A., Hammond, N., Hardy, M., Harrison, P., Hassanali, N., Hebaishi, H., Hines, S., Hinks, A., Hitman, G. A., Hocking, L., Holmes, C., Howard, E., Howard, P., Howson, J. M. M., Hughes, D., Hunt, S., Isaacs, J. D., Jain, M., Jewell, D. P., Johnson, T., Jolley, J. D., Jones, I. R., Jones, L. A., Kirov, G., Langford, C. F., Lango-Allen, H., Lathrop, G. M., Lee, J., Lee, K. L., Lees, C., Lewis, K., Lindgren, C. M., Maisuria-Armer, M., Maller, J., Mansfield, J., Marchini, J. L., Martin, P., Massey, D. C., Mcardle, W. L., Mcguffin, P., Mclay, K. E., Mcvean, G., Mentzer, A., Mimmack, M. L., Morgan, A. E., Morris, A. P., Mowat, C., Munroe, P. B., Myers, S., Newman, W., Nimmo, E. R., O'Donovan, M. C., Onipinla, A., Ovington, N. R., Owen, M. J., Palin, K., Palotie, A., Parnell, K., Pearson, R., Pernet, D., Perry, J. R., Phillips, A., Plagnol, V., Prescott, N. J., Prokopenko, I., Quail, M. A., Rafelt, S., Rayner, N. W., Reid, D. M., Renwick, A., Ring, S. M., Robertson, N., Robson, S., Russell, E., Clair, D. S., Sambrook, J. G., Sanderson, J. D., Sawcer, S. J., Schuilenburg, H., Scott, C. E., Seal, S., Shaw-Hawkins, S., Shields, B. M., Simmonds, M. J., Smyth, D. J., Somaskantharajah, E., Spanova, K., Steer, S., Stephens, J., Stevens, H. E., Stirrups, K., Stone, M. A., Strachan, D. P., Su, Z., Symmons, D. P. M., Thompson, J. R., Thomson, W., Tobin, M. D., Travers, M. E., Turnbull, C., Vukcevic, D., Wain, L. V., Walker, M., Walker, N. M., Wallace, C., Warren-Perry, M., Watkins, N. A., Webster, J., Weedon, M. N., Wilson, A. G., Woodburn, M., Wordsworth, B. P., Yau, C., Young, A. H., Zeggini, E., Brown, M. A., Burton, P. R., Caulfield, M. J., Compston, A., Farrall, M., Gough, S. C. L., Hall, A. S., Hattersley, A. T., Hill, A. V. S., Mathew, C. G., Pembrey, M., Satsangi, J., Stratton, M. R., Worthington, J., Hurles, M. E., Duncanson, A., Ouwehand, W. H., Parkes, M., Rahman, N., Todd, J. A., Samani, N. J., Kwiatkowski, D. P., Mccarthy, M. I., Craddock, N., Deloukas, P., Donnelly, P., Blackwell, J. M., Bramon, E., Casas, J. P., Corvin, A., Jankowski, J., Markus, H. S., Palmer, C. N., Plomin, R., Rautanen, A., Trembath, R. C., Viswanathan, A. C., Wood, N. W., Spencer, C. C. A., Band, G., Bellenguez, C., Freeman, C., Hellenthal, G., Pirinen, M., Strange, A., Blackburn, H., Bumpstead, S. J., Dronov, S., Gillman, M., Jayakumar, A., Mccann, O. T., Liddle, J., Potter, S. C., Ravindrarajah, R., Ricketts, M., Waller, M., Weston, P., Widaa, S., Whittaker, P., Romagnoni, A., Jegou, S., Van Steen, K., Wainrib, G., Hugot, J. -P., Peyrin-Biroulet, L., Chamaillard, M., Colombel, J. -F., Cottone, M., D'Amato, M., D'Inca, R., Halfvarson, J., Henderson, P., Karban, A., Kennedy, N. A., Khan, M. A., Lemann, M., Levine, A., Massey, D., Milla, M., Ng, S. M. E., Oikonomou, I., Peeters, H., Proctor, D. D., Rahier, J. -F., Rutgeerts, P., Seibold, F., Stronati, L., Taylor, K. M., Torkvist, L., Ublick, K., Van Limbergen, J., Van Gossum, A., Vatn, M. H., Zhang, H., Zhang, W., Andrews, J. M., Bampton, P. A., Barclay, M., Florin, T. H., Gearry, R., Krishnaprasad, K., Lawrance, I. C., Mahy, G., Montgomery, G. W., Radford-Smith, G., Roberts, R. L., Simms, L. A., Hanigan, K., Croft, A., Amininijad, L., Cleynen, I., Dewit, O., Franchimont, D., Georges, M., Laukens, D., Theatre, E., Vermeire, S., Aumais, G., Baidoo, L., Barrie, A. M., Beck, K., Bernard, E. -J., Binion, D. G., Bitton, A., Brant, S. R., Cho, J. H., Cohen, A., Croitoru, K., Daly, M. J., Datta, L. W., Deslandres, C., Duerr, R. H., Dutridge, D., Ferguson, J., Fultz, J., Goyette, P., Greenberg, G. R., Haritunians, T., Jobin, G., Katz, S., Lahaie, R. G., Mcgovern, D. P., Nelson, L., Ng, S. M., Ning, K., Pare, P., Regueiro, M. D., Rioux, J. D., Ruggiero, E., Schumm, L. P., Schwartz, M., Scott, R., Sharma, Y., Silverberg, M. S., Spears, D., Steinhart, A. H., Stempak, J. M., Swoger, J. M., Tsagarelis, C., Zhang, C., Zhao, H., Aerts, J., Ahmad, T., Arbury, H., Attwood, A., Auton, A., Ball, S. G., Balmforth, A. J., Barnes, C., Barrett, J. C., Barroso, I., Barton, A., Bennett, A. J., Bhaskar, S., Blaszczyk, K., Bowes, J., Brand, O. J., Braund, P. S., Bredin, F., Breen, G., Brown, M. J., Bruce, I. N., Bull, J., Burren, O. S., Burton, J., Byrnes, J., Caesar, S., Cardin, N., Clee, C. M., Coffey, A. J., MC Connell, J., Conrad, D. F., Cooper, J. D., Dominiczak, A. F., Downes, K., Drummond, H. E., Dudakia, D., Dunham, A., Ebbs, B., Eccles, D., Edkins, S., Edwards, C., Elliot, A., Emery, P., Evans, D. M., Evans, G., Eyre, S., Farmer, A., Ferrier, I. N., Flynn, E., Forbes, A., Forty, L., Franklyn, J. A., Frayling, T. M., Freathy, R. M., Giannoulatou, E., Gibbs, P., Gilbert, P., Gordon-Smith, K., Gray, E., Green, E., Groves, C. J., Grozeva, D., Gwilliam, R., Hall, A., Hammond, N., Hardy, M., Harrison, P., Hassanali, N., Hebaishi, H., Hines, S., Hinks, A., Hitman, G. A., Hocking, L., Holmes, C., Howard, E., Howard, P., Howson, J. M. M., Hughes, D., Hunt, S., Isaacs, J. D., Jain, M., Jewell, D. P., Johnson, T., Jolley, J. D., Jones, I. R., Jones, L. A., Kirov, G., Langford, C. F., Lango-Allen, H., Lathrop, G. M., Lee, J., Lee, K. L., Lees, C., Lewis, K., Lindgren, C. M., Maisuria-Armer, M., Maller, J., Mansfield, J., Marchini, J. L., Martin, P., Massey, D. C., Mcardle, W. L., Mcguffin, P., Mclay, K. E., Mcvean, G., Mentzer, A., Mimmack, M. L., Morgan, A. E., Morris, A. P., Mowat, C., Munroe, P. B., Myers, S., Newman, W., Nimmo, E. R., O'Donovan, M. C., Onipinla, A., Ovington, N. R., Owen, M. J., Palin, K., Palotie, A., Parnell, K., Pearson, R., Pernet, D., Perry, J. R., Phillips, A., Plagnol, V., Prescott, N. J., Prokopenko, I., Quail, M. A., Rafelt, S., Rayner, N. W., Reid, D. M., Renwick, A., Ring, S. M., Robertson, N., Robson, S., Russell, E., Clair, D. S., Sambrook, J. G., Sanderson, J. D., Sawcer, S. J., Schuilenburg, H., Scott, C. E., Seal, S., Shaw-Hawkins, S., Shields, B. M., Simmonds, M. J., Smyth, D. J., Somaskantharajah, E., Spanova, K., Steer, S., Stephens, J., Stevens, H. E., Stirrups, K., Stone, M. A., Strachan, D. P., Su, Z., Symmons, D. P. M., Thompson, J. R., Thomson, W., Tobin, M. D., Travers, M. E., Turnbull, C., Vukcevic, D., Wain, L. V., Walker, M., Walker, N. M., Wallace, C., Warren-Perry, M., Watkins, N. A., Webster, J., Weedon, M. N., Wilson, A. G., Woodburn, M., Wordsworth, B. P., Yau, C., Young, A. H., Zeggini, E., Brown, M. A., Burton, P. R., Caulfield, M. J., Compston, A., Farrall, M., Gough, S. C. L., Hall, A. S., Hattersley, A. T., Hill, A. V. S., Mathew, C. G., Pembrey, M., Satsangi, J., Stratton, M. R., Worthington, J., Hurles, M. E., Duncanson, A., Ouwehand, W. H., Parkes, M., Rahman, N., Todd, J. A., Samani, N. J., Kwiatkowski, D. P., Mccarthy, M. I., Craddock, N., Deloukas, P., Donnelly, P., Blackwell, J. M., Bramon, E., Casas, J. P., Corvin, A., Jankowski, J., Markus, H. S., Palmer, C. N., Plomin, R., Rautanen, A., Trembath, R. C., Viswanathan, A. C., Wood, N. W., Spencer, C. C. A., Band, G., Bellenguez, C., Freeman, C., Hellenthal, G., Pirinen, M., Strange, A., Blackburn, H., Bumpstead, S. J., Dronov, S., Gillman, M., Jayakumar, A., Mccann, O. T., Liddle, J., Potter, S. C., Ravindrarajah, R., Ricketts, M., Waller, M., Weston, P., Widaa, S., Whittaker, P., Daly, Mark J. 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Subjects
Male, 692/4020/1503/257/1402, Genotype, Genotyping Techniques, LOCI, 45/43, lcsh:Medicine, Polymorphism, Single Nucleotide, Crohn's disease, genetics, genome wide association, Article, Deep Learning, Crohn Disease, INDEL Mutation, Genetics research, Humans, genetics, Genetic Predisposition to Disease, 129, lcsh:Science, Alleles, Science & Technology, genome wide association, RISK PREDICTION, 45, Models, Genetic, lcsh:R, Decision Trees, 692/308/2056, ASSOCIATION, Multidisciplinary Sciences, Crohn's disease, Logistic Models, Nonlinear Dynamics, ROC Curve, Area Under Curve, Science & Technology - Other Topics, lcsh:Q, Female, Neural Networks, Computer, INFLAMMATORY-BOWEL-DISEASE, Genome-Wide Association Study
Abstract

Crohn Disease (CD) is a complex genetic disorder for which more than 140 genes have been identified using genome wide association studies (GWAS). However, the genetic architecture of the trait remains largely unknown. The recent development of machine learning (ML) approaches incited us to apply them to classify healthy and diseased people according to their genomic information. The Immunochip dataset containing 18,227 CD patients and 34,050 healthy controls enrolled and genotyped by the international Inflammatory Bowel Disease genetic consortium (IIBDGC) has been re-analyzed using a set of ML methods: penalized logistic regression (LR), gradient boosted trees (GBT) and artificial neural networks (NN). The main score used to compare the methods was the Area Under the ROC Curve (AUC) statistics. The impact of quality control (QC), imputing and coding methods on LR results showed that QC methods and imputation of missing genotypes may artificially increase the scores. At the opposite, neither the patient/control ratio nor marker preselection or coding strategies significantly affected the results. LR methods, including Lasso, Ridge and ElasticNet provided similar results with a maximum AUC of 0.80. GBT methods like XGBoost, LightGBM and CatBoost, together with dense NN with one or more hidden layers, provided similar AUC values, suggesting limited epistatic effects in the genetic architecture of the trait. ML methods detected near all the genetic variants previously identified by GWAS among the best predictors plus additional predictors with lower effects. The robustness and complementarity of the different methods are also studied. Compared to LR, non-linear models such as GBT or NN may provide robust complementary approaches to identify and classify genetic markers. Tis work was supported by Fondation pour la Recherche Médical (ref DEI20151234405) and Investissements d’Avenir programme ANR-11-IDEX-0005-02, Sorbonne Paris Cite, Laboratoire d’excellence INFLAMEX. Te authors thank the students that participated to the wisdom of the crowd exercise.

Published
2019

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