@article {1209, title = {Fucosyltransferase 2 (FUT2) non-secretor status is associated with Crohn{\textquoteright}s disease.}, journal = {Hum Mol Genet}, volume = {19}, year = {2010}, month = {2010 Sep 01}, pages = {3468-76}, abstract = {

Genetic variation in both innate and adaptive immune systems is associated with Crohn{\textquoteright}s disease (CD) susceptibility, but much of the heritability to CD remains unknown. We performed a genome-wide association study (GWAS) in 896 CD cases and 3204 healthy controls all of Caucasian origin as defined by multidimensional scaling. We found supportive evidence for 21 out of 40 CD loci identified in a recent CD GWAS meta-analysis, including two loci which had only nominally achieved replication (rs4807569, 19p13; rs991804, CCL2/CCL7). In addition, we identified associations with genes involved in tight junctions/epithelial integrity (ASHL, ARPC1A), innate immunity (EXOC2), dendritic cell biology [CADM1 (IGSF4)], macrophage development (MMD2), TGF-beta signaling (MAP3K7IP1) and FUT2 (a physiological trait that regulates gastrointestinal mucosal expression of blood group A and B antigens) (rs602662, P=3.4x10(-5)). Twenty percent of Caucasians are {\textquoteright}non-secretors{\textquoteright} who do not express ABO antigens in saliva as a result of the FUT2 W134X allele. We demonstrated replication in an independent cohort of 1174 CD cases and 357 controls between the four primary FUT2 single nucleotide polymorphisms (SNPs) and CD (rs602662, combined P-value 4.90x10(-8)) and also association with FUT2 W143X (P=2.6x10(-5)). Further evidence of the relevance of this locus to CD pathogenesis was demonstrated by the association of the original four SNPs and CD in the recently published CD GWAS meta-analysis (rs602662, P=0.001). These findings strongly implicate this locus in CD susceptibility and highlight the role of the mucus layer in the development of CD.

}, keywords = {Adolescent, Adult, Aged, Child, Child, Preschool, Cohort Studies, Crohn Disease, Female, Fucosyltransferases, Genome-Wide Association Study, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide, Young Adult}, issn = {1460-2083}, doi = {10.1093/hmg/ddq248}, author = {McGovern, Dermot P B and Jones, Michelle R and Taylor, Kent D and Marciante, Kristin and Yan, Xiaofei and Dubinsky, Marla and Ippoliti, Andy and Vasiliauskas, Eric and Berel, Dror and Derkowski, Carrie and Dutridge, Deb and Fleshner, Phil and Shih, David Q and Melmed, Gil and Mengesha, Emebet and King, Lily and Pressman, Sheila and Haritunians, Talin and Guo, Xiuqing and Targan, Stephan R and Rotter, Jerome I} } @article {1229, title = {Genetic predictors of medically refractory ulcerative colitis.}, journal = {Inflamm Bowel Dis}, volume = {16}, year = {2010}, month = {2010 Nov}, pages = {1830-40}, abstract = {

BACKGROUND: Acute severe ulcerative colitis (UC) remains a significant clinical challenge and the ability to predict, at an early stage, those individuals at risk of colectomy for medically refractory UC (MR-UC) would be a major clinical advance. The aim of this study was to use a genome-wide association study (GWAS) in a well-characterized cohort of UC patients to identify genetic variation that contributes to MR-UC.

METHODS: A GWAS comparing 324 MR-UC patients with 537 non-MR-UC patients was analyzed using logistic regression and Cox proportional hazards methods. In addition, the MR-UC patients were compared with 2601 healthy controls.

RESULTS: MR-UC was associated with more extensive disease (P = 2.7 {\texttimes} 10(-6)) and a positive family history of UC (P = 0.004). A risk score based on the combination of 46 single nucleotide polymorphisms (SNPs) associated with MR-UC explained 48\% of the variance for colectomy risk in our cohort. Risk scores divided into quarters showed the risk of colectomy to be 0\%, 17\%, 74\%, and 100\% in the four groups. Comparison of the MR-UC subjects with healthy controls confirmed the contribution of the major histocompatibility complex to severe UC (peak association: rs17207986, P = 1.4 {\texttimes} 10(-16)) and provided genome-wide suggestive association at the TNFSF15 (TL1A) locus (peak association: rs11554257, P = 1.4 {\texttimes} 10(-6)).

CONCLUSIONS: A SNP-based risk scoring system, identified here by GWAS analyses, may provide a useful adjunct to clinical parameters for predicting the natural history of UC. Furthermore, discovery of genetic processes underlying disease severity may help to identify pathways for novel therapeutic intervention in severe UC.

}, keywords = {Acute Disease, Adolescent, Adult, Cohort Studies, Colectomy, Colitis, Ulcerative, Female, Genetic Loci, Genome-Wide Association Study, Humans, Major Histocompatibility Complex, Male, Polymorphism, Single Nucleotide, Risk Factors, Severity of Illness Index, Tumor Necrosis Factor Ligand Superfamily Member 15, Young Adult}, issn = {1536-4844}, doi = {10.1002/ibd.21293}, author = {Haritunians, Talin and Taylor, Kent D and Targan, Stephan R and Dubinsky, Marla and Ippoliti, Andrew and Kwon, Soonil and Guo, Xiuqing and Melmed, Gil Y and Berel, Dror and Mengesha, Emebet and Psaty, Bruce M and Glazer, Nicole L and Vasiliauskas, Eric A and Rotter, Jerome I and Fleshner, Phillip R and McGovern, Dermot P B} } @article {1174, title = {Genome-wide association identifies multiple ulcerative colitis susceptibility loci.}, journal = {Nat Genet}, volume = {42}, year = {2010}, month = {2010 Apr}, pages = {332-7}, abstract = {

Ulcerative colitis is a chronic, relapsing inflammatory condition of the gastrointestinal tract with a complex genetic and environmental etiology. In an effort to identify genetic variation underlying ulcerative colitis risk, we present two distinct genome-wide association studies of ulcerative colitis and their joint analysis with a previously published scan, comprising, in aggregate, 2,693 individuals with ulcerative colitis and 6,791 control subjects. Fifty-nine SNPs from 14 independent loci attained an association significance of P < 10(-5). Seven of these loci exceeded genome-wide significance (P < 5 x 10(-8)). After testing an independent cohort of 2,009 cases of ulcerative colitis and 1,580 controls, we identified 13 loci that were significantly associated with ulcerative colitis (P < 5 x 10(-8)), including the immunoglobulin receptor gene FCGR2A, 5p15, 2p16 and ORMDL3 (orosomucoid1-like 3). We confirmed association with 14 previously identified ulcerative colitis susceptibility loci, and an analysis of acknowledged Crohn{\textquoteright}s disease loci showed that roughly half of the known Crohn{\textquoteright}s disease associations are shared with ulcerative colitis. These data implicate approximately 30 loci in ulcerative colitis, thereby providing insight into disease pathogenesis.

}, keywords = {Colitis, Ulcerative, Genetic Predisposition to Disease, Genome-Wide Association Study, Humans, Membrane Proteins, Meta-Analysis as Topic, Polymorphism, Single Nucleotide, Receptors, IgG}, issn = {1546-1718}, doi = {10.1038/ng.549}, author = {McGovern, Dermot P B and Gardet, Agn{\`e}s and T{\"o}rkvist, Leif and Goyette, Philippe and Essers, Jonah and Taylor, Kent D and Neale, Benjamin M and Ong, Rick T H and Lagac{\'e}, Caroline and Li, Chun and Green, Todd and Stevens, Christine R and Beauchamp, Claudine and Fleshner, Phillip R and Carlson, Marie and D{\textquoteright}Amato, Mauro and Halfvarson, Jonas and Hibberd, Martin L and L{\"o}rdal, Mikael and Padyukov, Leonid and Andriulli, Angelo and Colombo, Elisabetta and Latiano, Anna and Palmieri, Orazio and Bernard, Edmond-Jean and Deslandres, Colette and Hommes, Daan W and de Jong, Dirk J and Stokkers, Pieter C and Weersma, Rinse K and Sharma, Yashoda and Silverberg, Mark S and Cho, Judy H and Wu, Jing and Roeder, Kathryn and Brant, Steven R and Schumm, L Phillip and Duerr, Richard H and Dubinsky, Marla C and Glazer, Nicole L and Haritunians, Talin and Ippoliti, Andy and Melmed, Gil Y and Siscovick, David S and Vasiliauskas, Eric A and Targan, Stephan R and Annese, Vito and Wijmenga, Cisca and Pettersson, Sven and Rotter, Jerome I and Xavier, Ramnik J and Daly, Mark J and Rioux, John D and Seielstad, Mark} } @article {1249, title = {Genome-wide meta-analysis increases to 71 the number of confirmed Crohn{\textquoteright}s disease susceptibility loci.}, journal = {Nat Genet}, volume = {42}, year = {2010}, month = {2010 Dec}, pages = {1118-25}, abstract = {

We undertook a meta-analysis of six Crohn{\textquoteright}s disease genome-wide association studies (GWAS) comprising 6,333 affected individuals (cases) and 15,056 controls and followed up the top association signals in 15,694 cases, 14,026 controls and 414 parent-offspring trios. We identified 30 new susceptibility loci meeting genome-wide significance (P < 5 {\texttimes} 10$^{-}$$^{8}$). A series of in silico analyses highlighted particular genes within these loci and, together with manual curation, implicated functionally interesting candidate genes including SMAD3, ERAP2, IL10, IL2RA, TYK2, FUT2, DNMT3A, DENND1B, BACH2 and TAGAP. Combined with previously confirmed loci, these results identify 71 distinct loci with genome-wide significant evidence for association with Crohn{\textquoteright}s disease.

}, keywords = {Computational Biology, Crohn Disease, Genetic Linkage, Genetic Loci, Genetic Predisposition to Disease, Genetic Variation, Genome, Human, Genome-Wide Association Study, Humans, Reproducibility of Results}, issn = {1546-1718}, doi = {10.1038/ng.717}, author = {Franke, Andre and McGovern, Dermot P B and Barrett, Jeffrey C and Wang, Kai and Radford-Smith, Graham L and Ahmad, Tariq and Lees, Charlie W and Balschun, Tobias and Lee, James and Roberts, Rebecca and Anderson, Carl A and Bis, Joshua C and Bumpstead, Suzanne and Ellinghaus, David and Festen, Eleonora M and Georges, Michel and Green, Todd and Haritunians, Talin and Jostins, Luke and Latiano, Anna and Mathew, Christopher G and Montgomery, Grant W and Prescott, Natalie J and Raychaudhuri, Soumya and Rotter, Jerome I and Schumm, Philip and Sharma, Yashoda and Simms, Lisa A and Taylor, Kent D and Whiteman, David and Wijmenga, Cisca and Baldassano, Robert N and Barclay, Murray and Bayless, Theodore M and Brand, Stephan and B{\"u}ning, Carsten and Cohen, Albert and Colombel, Jean-Frederick and Cottone, Mario and Stronati, Laura and Denson, Ted and De Vos, Martine and D{\textquoteright}Inca, Renata and Dubinsky, Marla and Edwards, Cathryn and Florin, Tim and Franchimont, Denis and Gearry, Richard and Glas, J{\"u}rgen and Van Gossum, Andre and Guthery, Stephen L and Halfvarson, Jonas and Verspaget, Hein W and Hugot, Jean-Pierre and Karban, Amir and Laukens, Debby and Lawrance, Ian and Lemann, Marc and Levine, Arie and Libioulle, Cecile and Louis, Edouard and Mowat, Craig and Newman, William and Pan{\'e}s, Juli{\'a}n and Phillips, Anne and Proctor, Deborah D and Regueiro, Miguel and Russell, Richard and Rutgeerts, Paul and Sanderson, Jeremy and Sans, Miquel and Seibold, Frank and Steinhart, A Hillary and Stokkers, Pieter C F and T{\"o}rkvist, Leif and Kullak-Ublick, Gerd and Wilson, David and Walters, Thomas and Targan, Stephan R and Brant, Steven R and Rioux, John D and D{\textquoteright}Amato, Mauro and Weersma, Rinse K and Kugathasan, Subra and Griffiths, Anne M and Mansfield, John C and Vermeire, Severine and Duerr, Richard H and Silverberg, Mark S and Satsangi, Jack and Schreiber, Stefan and Cho, Judy H and Annese, Vito and Hakonarson, Hakon and Daly, Mark J and Parkes, Miles} }