@article {1092, title = {Genomewide association studies of stroke.}, journal = {N Engl J Med}, volume = {360}, year = {2009}, month = {2009 Apr 23}, pages = {1718-28}, abstract = {

BACKGROUND: The genes underlying the risk of stroke in the general population remain undetermined.

METHODS: We carried out an analysis of genomewide association data generated from four large cohorts composing the Cohorts for Heart and Aging Research in Genomic Epidemiology consortium, including 19,602 white persons (mean [+/-SD] age, 63+/-8 years) in whom 1544 incident strokes (1164 ischemic strokes) developed over an average follow-up of 11 years. We tested the markers most strongly associated with stroke in a replication cohort of 2430 black persons with 215 incident strokes (191 ischemic strokes), another cohort of 574 black persons with 85 incident strokes (68 ischemic strokes), and 652 Dutch persons with ischemic stroke and 3613 unaffected persons.

RESULTS: Two intergenic single-nucleotide polymorphisms on chromosome 12p13 and within 11 kb of the gene NINJ2 were associated with stroke (P<5x10(-8)). NINJ2 encodes an adhesion molecule expressed in glia and shows increased expression after nerve injury. Direct genotyping showed that rs12425791 was associated with an increased risk of total (i.e., all types) and ischemic stroke, with hazard ratios of 1.30 (95\% confidence interval [CI], 1.19 to 1.42) and 1.33 (95\% CI, 1.21 to 1.47), respectively, yielding population attributable risks of 11\% and 12\% in the discovery cohorts. Corresponding hazard ratios were 1.35 (95\% CI, 1.01 to 1.79; P=0.04) and 1.42 (95\% CI, 1.06 to 1.91; P=0.02) in the large cohort of black persons and 1.17 (95\% CI, 1.01 to 1.37; P=0.03) and 1.19 (95\% CI, 1.01 to 1.41; P=0.04) in the Dutch sample; the results of an underpowered analysis of the smaller black cohort were nonsignificant.

CONCLUSIONS: A genetic locus on chromosome 12p13 is associated with an increased risk of stroke.

}, keywords = {African Continental Ancestry Group, Aged, Chromosomes, Human, Pair 12, Cohort Studies, European Continental Ancestry Group, Female, Genetic Markers, Genetic Predisposition to Disease, Genome-Wide Association Study, Genotype, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide, Proportional Hazards Models, Risk Factors, Stroke}, issn = {1533-4406}, doi = {10.1056/NEJMoa0900094}, author = {Ikram, M Arfan and Seshadri, Sudha and Bis, Joshua C and Fornage, Myriam and DeStefano, Anita L and Aulchenko, Yurii S and Debette, Stephanie and Lumley, Thomas and Folsom, Aaron R and van den Herik, Evita G and Bos, Michiel J and Beiser, Alexa and Cushman, Mary and Launer, Lenore J and Shahar, Eyal and Struchalin, Maksim and Du, Yangchun and Glazer, Nicole L and Rosamond, Wayne D and Rivadeneira, Fernando and Kelly-Hayes, Margaret and Lopez, Oscar L and Coresh, Josef and Hofman, Albert and DeCarli, Charles and Heckbert, Susan R and Koudstaal, Peter J and Yang, Qiong and Smith, Nicholas L and Kase, Carlos S and Rice, Kenneth and Haritunians, Talin and Roks, Gerwin and de Kort, Paul L M and Taylor, Kent D and de Lau, Lonneke M and Oostra, Ben A and Uitterlinden, Andr{\'e} G and Rotter, Jerome I and Boerwinkle, Eric and Psaty, Bruce M and Mosley, Thomas H and van Duijn, Cornelia M and Breteler, Monique M B and Longstreth, W T and Wolf, Philip A} } @article {1099, title = {Multiple loci associated with indices of renal function and chronic kidney disease.}, journal = {Nat Genet}, volume = {41}, year = {2009}, month = {2009 Jun}, pages = {712-7}, abstract = {

Chronic kidney disease (CKD) has a heritable component and is an important global public health problem because of its high prevalence and morbidity. We conducted genome-wide association studies (GWAS) to identify susceptibility loci for glomerular filtration rate, estimated by serum creatinine (eGFRcrea) and cystatin C (eGFRcys), and CKD (eGFRcrea < 60 ml/min/1.73 m(2)) in European-ancestry participants of four population-based cohorts (ARIC, CHS, FHS, RS; n = 19,877; 2,388 CKD cases), and tested for replication in 21,466 participants (1,932 CKD cases). We identified significant SNP associations (P < 5 {\texttimes} 10(-8)) with CKD at the UMOD locus, with eGFRcrea at UMOD, SHROOM3 and GATM-SPATA5L1, and with eGFRcys at CST and STC1. UMOD encodes the most common protein in human urine, Tamm-Horsfall protein, and rare mutations in UMOD cause mendelian forms of kidney disease. Our findings provide new insights into CKD pathogenesis and underscore the importance of common genetic variants influencing renal function and disease.

}, keywords = {Chromosome Mapping, Cohort Studies, Genetic Variation, Genome-Wide Association Study, Glomerular Filtration Rate, Humans, Kidney, Kidney Failure, Chronic, Meta-Analysis as Topic, Mucoproteins, Netherlands, Polymorphism, Single Nucleotide, Prevalence, Uromodulin}, issn = {1546-1718}, doi = {10.1038/ng.377}, author = {K{\"o}ttgen, Anna and Glazer, Nicole L and Dehghan, Abbas and Hwang, Shih-Jen and Katz, Ronit and Li, Man and Yang, Qiong and Gudnason, Vilmundur and Launer, Lenore J and Harris, Tamara B and Smith, Albert V and Arking, Dan E and Astor, Brad C and Boerwinkle, Eric and Ehret, Georg B and Ruczinski, Ingo and Scharpf, Robert B and Chen, Yii-Der Ida and de Boer, Ian H and Haritunians, Talin and Lumley, Thomas and Sarnak, Mark and Siscovick, David and Benjamin, Emelia J and Levy, Daniel and Upadhyay, Ashish and Aulchenko, Yurii S and Hofman, Albert and Rivadeneira, Fernando and Uitterlinden, Andr{\'e} G and van Duijn, Cornelia M and Chasman, Daniel I and Par{\'e}, Guillaume and Ridker, Paul M and Kao, W H Linda and Witteman, Jacqueline C and Coresh, Josef and Shlipak, Michael G and Fox, Caroline S} } @article {1107, title = {NRXN3 is a novel locus for waist circumference: a genome-wide association study from the CHARGE Consortium.}, journal = {PLoS Genet}, volume = {5}, year = {2009}, month = {2009 Jun}, pages = {e1000539}, abstract = {

Central abdominal fat is a strong risk factor for diabetes and cardiovascular disease. To identify common variants influencing central abdominal fat, we conducted a two-stage genome-wide association analysis for waist circumference (WC). In total, three loci reached genome-wide significance. In stage 1, 31,373 individuals of Caucasian descent from eight cohort studies confirmed the role of FTO and MC4R and identified one novel locus associated with WC in the neurexin 3 gene [NRXN3 (rs10146997, p = 6.4x10(-7))]. The association with NRXN3 was confirmed in stage 2 by combining stage 1 results with those from 38,641 participants in the GIANT consortium (p = 0.009 in GIANT only, p = 5.3x10(-8) for combined analysis, n = 70,014). Mean WC increase per copy of the G allele was 0.0498 z-score units (0.65 cm). This SNP was also associated with body mass index (BMI) [p = 7.4x10(-6), 0.024 z-score units (0.10 kg/m(2)) per copy of the G allele] and the risk of obesity (odds ratio 1.13, 95\% CI 1.07-1.19; p = 3.2x10(-5) per copy of the G allele). The NRXN3 gene has been previously implicated in addiction and reward behavior, lending further evidence that common forms of obesity may be a central nervous system-mediated disorder. Our findings establish that common variants in NRXN3 are associated with WC, BMI, and obesity.

}, keywords = {Aged, Body Mass Index, Cohort Studies, European Continental Ancestry Group, Female, Genetic Predisposition to Disease, Genome-Wide Association Study, Humans, Male, Middle Aged, Nerve Tissue Proteins, Obesity, Polymorphism, Single Nucleotide, Waist Circumference}, issn = {1553-7404}, doi = {10.1371/journal.pgen.1000539}, author = {Heard-Costa, Nancy L and Zillikens, M Carola and Monda, Keri L and Johansson, Asa and Harris, Tamara B and Fu, Mao and Haritunians, Talin and Feitosa, Mary F and Aspelund, Thor and Eiriksdottir, Gudny and Garcia, Melissa and Launer, Lenore J and Smith, Albert V and Mitchell, Braxton D and McArdle, Patrick F and Shuldiner, Alan R and Bielinski, Suzette J and Boerwinkle, Eric and Brancati, Fred and Demerath, Ellen W and Pankow, James S and Arnold, Alice M and Chen, Yii-Der Ida and Glazer, Nicole L and McKnight, Barbara and Psaty, Bruce M and Rotter, Jerome I and Amin, Najaf and Campbell, Harry and Gyllensten, Ulf and Pattaro, Cristian and Pramstaller, Peter P and Rudan, Igor and Struchalin, Maksim and Vitart, Veronique and Gao, Xiaoyi and Kraja, Aldi and Province, Michael A and Zhang, Qunyuan and Atwood, Larry D and Dupuis, Jos{\'e}e and Hirschhorn, Joel N and Jaquish, Cashell E and O{\textquoteright}Donnell, Christopher J and Vasan, Ramachandran S and White, Charles C and Aulchenko, Yurii S and Estrada, Karol and Hofman, Albert and Rivadeneira, Fernando and Uitterlinden, Andr{\'e} G and Witteman, Jacqueline C M and Oostra, Ben A and Kaplan, Robert C and Gudnason, Vilmundur and O{\textquoteright}Connell, Jeffrey R and Borecki, Ingrid B and van Duijn, Cornelia M and Cupples, L Adrienne and Fox, Caroline S and North, Kari E} } @article {1197, title = {Association of genome-wide variation with the risk of incident heart failure in adults of European and African ancestry: a prospective meta-analysis from the cohorts for heart and aging research in genomic epidemiology (CHARGE) consortium.}, journal = {Circ Cardiovasc Genet}, volume = {3}, year = {2010}, month = {2010 Jun}, pages = {256-66}, abstract = {

BACKGROUND: Although genetic factors contribute to the onset of heart failure (HF), no large-scale genome-wide investigation of HF risk has been published to date. We have investigated the association of 2,478,304 single-nucleotide polymorphisms with incident HF by meta-analyzing data from 4 community-based prospective cohorts: the Atherosclerosis Risk in Communities Study, the Cardiovascular Health Study, the Framingham Heart Study, and the Rotterdam Study.

METHODS AND RESULTS: Eligible participants for these analyses were of European or African ancestry and free of clinical HF at baseline. Each study independently conducted genome-wide scans and imputed data to the approximately 2.5 million single-nucleotide polymorphisms in HapMap. Within each study, Cox proportional hazards regression models provided age- and sex-adjusted estimates of the association between each variant and time to incident HF. Fixed-effect meta-analyses combined results for each single-nucleotide polymorphism from the 4 cohorts to produce an overall association estimate and P value. A genome-wide significance P value threshold was set a priori at 5.0x10(-7). During a mean follow-up of 11.5 years, 2526 incident HF events (12\%) occurred in 20 926 European-ancestry participants. The meta-analysis identified a genome-wide significant locus at chromosomal position 15q22 (1.4x10(-8)), which was 58.8 kb from USP3. Among 2895 African-ancestry participants, 466 incident HF events (16\%) occurred during a mean follow-up of 13.7 years. One genome-wide significant locus was identified at 12q14 (6.7x10(-8)), which was 6.3 kb from LRIG3.

CONCLUSIONS: We identified 2 loci that were associated with incident HF and exceeded genome-wide significance. The findings merit replication in other community-based settings of incident HF.

}, keywords = {African Americans, Aged, Aged, 80 and over, Cohort Studies, Endopeptidases, European Continental Ancestry Group, Female, Genome-Wide Association Study, Heart Failure, Humans, Incidence, Male, Middle Aged, Polymorphism, Single Nucleotide, Risk, Ubiquitin-Specific Proteases}, issn = {1942-3268}, doi = {10.1161/CIRCGENETICS.109.895763}, author = {Smith, Nicholas L and Felix, Janine F and Morrison, Alanna C and Demissie, Serkalem and Glazer, Nicole L and Loehr, Laura R and Cupples, L Adrienne and Dehghan, Abbas and Lumley, Thomas and Rosamond, Wayne D and Lieb, Wolfgang and Rivadeneira, Fernando and Bis, Joshua C and Folsom, Aaron R and Benjamin, Emelia and Aulchenko, Yurii S and Haritunians, Talin and Couper, David and Murabito, Joanne and Wang, Ying A and Stricker, Bruno H and Gottdiener, John S and Chang, Patricia P and Wang, Thomas J and Rice, Kenneth M and Hofman, Albert and Heckbert, Susan R and Fox, Ervin R and O{\textquoteright}Donnell, Christopher J and Uitterlinden, Andr{\'e} G and Rotter, Jerome I and Willerson, James T and Levy, Daniel and van Duijn, Cornelia M and Psaty, Bruce M and Witteman, Jacqueline C M and Boerwinkle, Eric and Vasan, Ramachandran S} } @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 {1187, title = {Genomic variation associated with mortality among adults of European and African ancestry with heart failure: the cohorts for heart and aging research in genomic epidemiology consortium.}, journal = {Circ Cardiovasc Genet}, volume = {3}, year = {2010}, month = {2010 Jun}, pages = {248-55}, abstract = {

BACKGROUND: Prognosis and survival are significant concerns for individuals with heart failure (HF). To better understand the pathophysiology of HF prognosis, the association between 2,366,858 single-nucleotide polymorphisms (SNPs) and all-cause mortality was evaluated among individuals with incident HF from 4 community-based prospective cohorts: the Atherosclerosis Risk in Communities Study, the Cardiovascular Health Study, the Framingham Heart Study, and the Rotterdam Study.

METHODS AND RESULTS: Participants were 2526 individuals of European ancestry and 466 individuals of African ancestry who experienced an incident HF event during follow-up in the respective cohorts. Within each study, the association between genetic variants and time to mortality among individuals with HF was assessed by Cox proportional hazards models that included adjustment for sex and age at the time of the HF event. Prospective fixed-effect meta-analyses were conducted for the 4 study populations of European ancestry (N=1645 deaths) and for the 2 populations of African ancestry (N=281 deaths). Genome-wide significance was set at P=5.0x10(-7). Meta-analytic findings among individuals of European ancestry revealed 1 genome-wide significant locus on chromosome 3p22 in an intron of CKLF-like MARVEL transmembrane domain containing 7 (CMTM7, P=3.2x10(-7)). Eight additional loci in individuals of European ancestry and 4 loci in individuals of African ancestry were identified by high-signal SNPs (P<1.0x10(-5)) but did not meet genome-wide significance.

CONCLUSIONS: This study identified a novel locus associated with all-cause mortality among individuals of European ancestry with HF. This finding warrants additional investigation, including replication, in other studies of HF.

}, keywords = {African Americans, Aged, Aged, 80 and over, Chemokines, Cohort Studies, European Continental Ancestry Group, Female, Genome-Wide Association Study, Genotype, Heart Failure, Humans, Introns, Male, MARVEL Domain-Containing Proteins, Membrane Proteins, Middle Aged, Polymorphism, Single Nucleotide, Risk Factors}, issn = {1942-3268}, doi = {10.1161/CIRCGENETICS.109.895995}, author = {Morrison, Alanna C and Felix, Janine F and Cupples, L Adrienne and Glazer, Nicole L and Loehr, Laura R and Dehghan, Abbas and Demissie, Serkalem and Bis, Joshua C and Rosamond, Wayne D and Aulchenko, Yurii S and Wang, Ying A and Haritunians, Talin and Folsom, Aaron R and Rivadeneira, Fernando and Benjamin, Emelia J and Lumley, Thomas and Couper, David and Stricker, Bruno H and O{\textquoteright}Donnell, Christopher J and Rice, Kenneth M and Chang, Patricia P and Hofman, Albert and Levy, Daniel and Rotter, Jerome I and Fox, Ervin R and Uitterlinden, Andr{\'e} G and Wang, Thomas J and Psaty, Bruce M and Willerson, James T and van Duijn, Cornelia M and Boerwinkle, Eric and Witteman, Jacqueline C M and Vasan, Ramachandran S and Smith, Nicholas L} } @article {1183, title = {New loci associated with kidney function and chronic kidney disease.}, journal = {Nat Genet}, volume = {42}, year = {2010}, month = {2010 May}, pages = {376-84}, abstract = {

Chronic kidney disease (CKD) is a significant public health problem, and recent genetic studies have identified common CKD susceptibility variants. The CKDGen consortium performed a meta-analysis of genome-wide association data in 67,093 individuals of European ancestry from 20 predominantly population-based studies in order to identify new susceptibility loci for reduced renal function as estimated by serum creatinine (eGFRcrea), serum cystatin c (eGFRcys) and CKD (eGFRcrea < 60 ml/min/1.73 m(2); n = 5,807 individuals with CKD (cases)). Follow-up of the 23 new genome-wide-significant loci (P < 5 x 10(-8)) in 22,982 replication samples identified 13 new loci affecting renal function and CKD (in or near LASS2, GCKR, ALMS1, TFDP2, DAB2, SLC34A1, VEGFA, PRKAG2, PIP5K1B, ATXN2, DACH1, UBE2Q2 and SLC7A9) and 7 loci suspected to affect creatinine production and secretion (CPS1, SLC22A2, TMEM60, WDR37, SLC6A13, WDR72 and BCAS3). These results further our understanding of the biologic mechanisms of kidney function by identifying loci that potentially influence nephrogenesis, podocyte function, angiogenesis, solute transport and metabolic functions of the kidney.

}, keywords = {Cohort Studies, Creatinine, Cystatin C, Diet, Europe, Genetic Markers, Genome-Wide Association Study, Glomerular Filtration Rate, Humans, Kidney, Kidney Failure, Chronic, Models, Genetic, Risk Factors}, issn = {1546-1718}, doi = {10.1038/ng.568}, author = {K{\"o}ttgen, Anna and Pattaro, Cristian and B{\"o}ger, Carsten A and Fuchsberger, Christian and Olden, Matthias and Glazer, Nicole L and Parsa, Afshin and Gao, Xiaoyi and Yang, Qiong and Smith, Albert V and O{\textquoteright}Connell, Jeffrey R and Li, Man and Schmidt, Helena and Tanaka, Toshiko and Isaacs, Aaron and Ketkar, Shamika and Hwang, Shih-Jen and Johnson, Andrew D and Dehghan, Abbas and Teumer, Alexander and Par{\'e}, Guillaume and Atkinson, Elizabeth J and Zeller, Tanja and Lohman, Kurt and Cornelis, Marilyn C and Probst-Hensch, Nicole M and Kronenberg, Florian and T{\"o}njes, Anke and Hayward, Caroline and Aspelund, Thor and Eiriksdottir, Gudny and Launer, Lenore J and Harris, Tamara B and Rampersaud, Evadnie and Mitchell, Braxton D and Arking, Dan E and Boerwinkle, Eric and Struchalin, Maksim and Cavalieri, Margherita and Singleton, Andrew and Giallauria, Francesco and Metter, Jeffrey and de Boer, Ian H and Haritunians, Talin and Lumley, Thomas and Siscovick, David and Psaty, Bruce M and Zillikens, M Carola and Oostra, Ben A and Feitosa, Mary and Province, Michael and de Andrade, Mariza and Turner, Stephen T and Schillert, Arne and Ziegler, Andreas and Wild, Philipp S and Schnabel, Renate B and Wilde, Sandra and Munzel, Thomas F and Leak, Tennille S and Illig, Thomas and Klopp, Norman and Meisinger, Christa and Wichmann, H-Erich and Koenig, Wolfgang and Zgaga, Lina and Zemunik, Tatijana and Kolcic, Ivana and Minelli, Cosetta and Hu, Frank B and Johansson, Asa and Igl, Wilmar and Zaboli, Ghazal and Wild, Sarah H and Wright, Alan F and Campbell, Harry and Ellinghaus, David and Schreiber, Stefan and Aulchenko, Yurii S and Felix, Janine F and Rivadeneira, Fernando and Uitterlinden, Andr{\'e} G and Hofman, Albert and Imboden, Medea and Nitsch, Dorothea and Brandst{\"a}tter, Anita and Kollerits, Barbara and Kedenko, Lyudmyla and M{\"a}gi, Reedik and Stumvoll, Michael and Kovacs, Peter and Boban, Mladen and Campbell, Susan and Endlich, Karlhans and V{\"o}lzke, Henry and Kroemer, Heyo K and Nauck, Matthias and V{\"o}lker, Uwe and Polasek, Ozren and Vitart, Veronique and Badola, Sunita and Parker, Alexander N and Ridker, Paul M and Kardia, Sharon L R and Blankenberg, Stefan and Liu, Yongmei and Curhan, Gary C and Franke, Andre and Rochat, Thierry and Paulweber, Bernhard and Prokopenko, Inga and Wang, Wei and Gudnason, Vilmundur and Shuldiner, Alan R and Coresh, Josef and Schmidt, Reinhold and Ferrucci, Luigi and Shlipak, Michael G and van Duijn, Cornelia M and Borecki, Ingrid and Kr{\"a}mer, Bernhard K and Rudan, Igor and Gyllensten, Ulf and Wilson, James F and Witteman, Jacqueline C and Pramstaller, Peter P and Rettig, Rainer and Hastie, Nick and Chasman, Daniel I and Kao, W H and Heid, Iris M and Fox, Caroline S} } @article {1555, title = {A genome-wide association study identifies a potential novel gene locus for keratoconus, one of the commonest causes for corneal transplantation in developed countries.}, journal = {Hum Mol Genet}, volume = {21}, year = {2012}, month = {2012 Jan 15}, pages = {421-9}, abstract = {

Keratoconus is a condition in which the cornea progressively thins over time, and is a major cause for cornea transplantation. To identify keratoconus susceptibility regions, we performed a comprehensive genome-wide association study (GWAS) using a discovery and replication design. A discovery panel of 222 keratoconus Caucasian patients and 3324 Caucasian controls was genotyped using Illumina 370K beadchips. Further associated and fine-mapping single nucleotide polymorphisms (SNPs) (n= 4905) were genotyped in an independent replication case-control panel of 304 cases and 518 controls and a family panel of 307 subjects in 70 families. Logistic regression models implemented in PLINK were performed to test associations in case-control samples with and without principal component (PC) adjustments. Generalized estimation equation models accounting for familial correlations implemented in GWAF were used for association testing in families. No genome-wide associations were identified in the discovery GWAS panel. From the initial testing without adjustments for PCs, the top three SNPs located at 3p26 (rs6442925), 2q21.3 (rs4954218) and 19q13.3 (rs1428642) were identified with unadjusted P-values of 6.5 {\texttimes} 10(-8), 2.4 {\texttimes} 10(-7) and 3.1 {\texttimes} 10(-7), respectively. After adjustments for PCs, rs1428642 became the most significant through the genome with a P-value of 1.4 {\texttimes} 10(-6), while rs6442925 and rs4954218 were less significant (P= 1.9 {\texttimes} 10(-5) and 2.6 {\texttimes} 10(-4)). SNP rs4954218 was confirmed in two independent replication panels with P-values of 0.004 and 0.009, respectively. Meta-analysis revealed a highest association at rs4954218 with adjusted P= 1.6 {\texttimes} 10(-7) (unadjusted P= 1.2 {\texttimes} 10(-9)). These findings suggest SNP rs4954218, located near the RAB3GAP1 gene, previously reported to be associated with corneal malformation, is a potential susceptibility locus for keratoconus.

}, keywords = {Case-Control Studies, Chromosomes, Human, Pair 2, Cohort Studies, Corneal Transplantation, Developed Countries, Genome-Wide Association Study, Humans, Keratoconus, Polymorphism, Single Nucleotide}, issn = {1460-2083}, doi = {10.1093/hmg/ddr460}, author = {Li, Xiaohui and Bykhovskaya, Yelena and Haritunians, Talin and Siscovick, David and Aldave, Anthony and Szczotka-Flynn, Loretta and Iyengar, Sudha K and Rotter, Jerome I and Taylor, Kent D and Rabinowitz, Yaron S} } @article {6067, title = {Best practices and joint calling of the HumanExome BeadChip: the CHARGE Consortium.}, journal = {PLoS One}, volume = {8}, year = {2013}, month = {2013}, pages = {e68095}, abstract = {

Genotyping arrays are a cost effective approach when typing previously-identified genetic polymorphisms in large numbers of samples. One limitation of genotyping arrays with rare variants (e.g., minor allele frequency [MAF] <0.01) is the difficulty that automated clustering algorithms have to accurately detect and assign genotype calls. Combining intensity data from large numbers of samples may increase the ability to accurately call the genotypes of rare variants. Approximately 62,000 ethnically diverse samples from eleven Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) Consortium cohorts were genotyped with the Illumina HumanExome BeadChip across seven genotyping centers. The raw data files for the samples were assembled into a single project for joint calling. To assess the quality of the joint calling, concordance of genotypes in a subset of individuals having both exome chip and exome sequence data was analyzed. After exclusion of low performing SNPs on the exome chip and non-overlap of SNPs derived from sequence data, genotypes of 185,119 variants (11,356 were monomorphic) were compared in 530 individuals that had whole exome sequence data. A total of 98,113,070 pairs of genotypes were tested and 99.77\% were concordant, 0.14\% had missing data, and 0.09\% were discordant. We report that joint calling allows the ability to accurately genotype rare variation using array technology when large sample sizes are available and best practices are followed. The cluster file from this experiment is available at www.chargeconsortium.com/main/exomechip.

}, keywords = {Aging, Alleles, Cluster Analysis, Cohort Studies, Continental Population Groups, Exome, Female, Gene Frequency, Genomics, Genotype, Heart, Humans, Male, Oligonucleotide Array Sequence Analysis, Polymorphism, Single Nucleotide, Sample Size, Self Report, Sequence Analysis, DNA}, issn = {1932-6203}, doi = {10.1371/journal.pone.0068095}, author = {Grove, Megan L and Yu, Bing and Cochran, Barbara J and Haritunians, Talin and Bis, Joshua C and Taylor, Kent D and Hansen, Mark and Borecki, Ingrid B and Cupples, L Adrienne and Fornage, Myriam and Gudnason, Vilmundur and Harris, Tamara B and Kathiresan, Sekar and Kraaij, Robert and Launer, Lenore J and Levy, Daniel and Liu, Yongmei and Mosley, Thomas and Peloso, Gina M and Psaty, Bruce M and Rich, Stephen S and Rivadeneira, Fernando and Siscovick, David S and Smith, Albert V and Uitterlinden, Andre and van Duijn, Cornelia M and Wilson, James G and O{\textquoteright}Donnell, Christopher J and Rotter, Jerome I and Boerwinkle, Eric} }