@article {1224, title = {Common variants in the calcium-sensing receptor gene are associated with total serum calcium levels.}, journal = {Hum Mol Genet}, volume = {19}, year = {2010}, month = {2010 Nov 01}, pages = {4296-303}, abstract = {

Serum calcium levels are tightly regulated. We performed genome-wide association studies (GWAS) in population-based studies participating in the CHARGE Consortium to uncover common genetic variations associated with total serum calcium levels. GWAS of serum calcium concentrations was performed in 20 611 individuals of European ancestry for \~{}2.5 million genotyped and imputed single-nucleotide polymorphisms (SNPs). The SNP with the lowest P-value was rs17251221 (P = 2.4 * 10(-22), minor allele frequency 14\%) in the calcium-sensing receptor gene (CASR). This lead SNP was associated with higher serum calcium levels [0.06 mg/dl (0.015 mmol/l) per copy of the minor G allele] and accounted for 0.54\% of the variance in serum calcium concentrations. The identification of variation in CASR that influences serum calcium concentration confirms the results of earlier candidate gene studies. The G allele of rs17251221 was also associated with higher serum magnesium levels (P = 1.2 * 10(-3)), lower serum phosphate levels (P = 2.8 * 10(-7)) and lower bone mineral density at the lumbar spine (P = 0.038), but not the femoral neck. No additional genomic loci contained SNPs associated at genome-wide significance (P < 5 * 10(-8)). These associations resemble clinical characteristics of patients with familial hypocalciuric hypercalcemia, an autosomal-dominant disease arising from rare inactivating mutations in the CASR gene. We conclude that common genetic variation in the CASR gene is associated with similar but milder features in the general population.

}, keywords = {Adult, Calcium, Female, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide, Receptors, Calcium-Sensing}, issn = {1460-2083}, doi = {10.1093/hmg/ddq342}, author = {O{\textquoteright}Seaghdha, Conall M and Yang, Qiong and Glazer, Nicole L and Leak, Tennille S and Dehghan, Abbas and Smith, Albert V and Kao, W H Linda and Lohman, Kurt and Hwang, Shih-Jen and Johnson, Andrew D and Hofman, Albert and Uitterlinden, Andr{\'e} G and Chen, Yii-Der Ida and Brown, Edward M and Siscovick, David S and Harris, Tamara B and Psaty, Bruce M and Coresh, Josef and Gudnason, Vilmundur and Witteman, Jacqueline C and Liu, Yong Mei and Kestenbaum, Bryan R and Fox, Caroline S and K{\"o}ttgen, Anna} } @article {1218, title = {Genetic ancestry in lung-function predictions.}, journal = {N Engl J Med}, volume = {363}, year = {2010}, month = {2010 Jul 22}, pages = {321-30}, abstract = {

BACKGROUND: Self-identified race or ethnic group is used to determine normal reference standards in the prediction of pulmonary function. We conducted a study to determine whether the genetically determined percentage of African ancestry is associated with lung function and whether its use could improve predictions of lung function among persons who identified themselves as African American.

METHODS: We assessed the ancestry of 777 participants self-identified as African American in the Coronary Artery Risk Development in Young Adults (CARDIA) study and evaluated the relation between pulmonary function and ancestry by means of linear regression. We performed similar analyses of data for two independent cohorts of subjects identifying themselves as African American: 813 participants in the Health, Aging, and Body Composition (HABC) study and 579 participants in the Cardiovascular Health Study (CHS). We compared the fit of two types of models to lung-function measurements: models based on the covariates used in standard prediction equations and models incorporating ancestry. We also evaluated the effect of the ancestry-based models on the classification of disease severity in two asthma-study populations.

RESULTS: African ancestry was inversely related to forced expiratory volume in 1 second (FEV(1)) and forced vital capacity in the CARDIA cohort. These relations were also seen in the HABC and CHS cohorts. In predicting lung function, the ancestry-based model fit the data better than standard models. Ancestry-based models resulted in the reclassification of asthma severity (based on the percentage of the predicted FEV(1)) in 4 to 5\% of participants.

CONCLUSIONS: Current predictive equations, which rely on self-identified race alone, may misestimate lung function among subjects who identify themselves as African American. Incorporating ancestry into normative equations may improve lung-function estimates and more accurately categorize disease severity. (Funded by the National Institutes of Health and others.)

}, keywords = {Adolescent, Adult, African Americans, Aged, Aged, 80 and over, Female, Forced Expiratory Volume, Genetic Markers, Genotype, Humans, Linear Models, Male, Middle Aged, Oligonucleotide Array Sequence Analysis, Reference Values, Respiratory Function Tests, Vital Capacity, Young Adult}, issn = {1533-4406}, doi = {10.1056/NEJMoa0907897}, author = {Kumar, Rajesh and Seibold, Max A and Aldrich, Melinda C and Williams, L Keoki and Reiner, Alex P and Colangelo, Laura and Galanter, Joshua and Gignoux, Christopher and Hu, Donglei and Sen, Saunak and Choudhry, Shweta and Peterson, Edward L and Rodriguez-Santana, Jose and Rodriguez-Cintron, William and Nalls, Michael A and Leak, Tennille S and O{\textquoteright}Meara, Ellen and Meibohm, Bernd and Kritchevsky, Stephen B and Li, Rongling and Harris, Tamara B and Nickerson, Deborah A and Fornage, Myriam and Enright, Paul and Ziv, Elad and Smith, Lewis J and Liu, Kiang and Burchard, Esteban Gonz{\'a}lez} } @article {1223, title = {Genome-wide association studies of serum magnesium, potassium, and sodium concentrations identify six Loci influencing serum magnesium levels.}, journal = {PLoS Genet}, volume = {6}, year = {2010}, month = {2010 Aug 05}, abstract = {

Magnesium, potassium, and sodium, cations commonly measured in serum, are involved in many physiological processes including energy metabolism, nerve and muscle function, signal transduction, and fluid and blood pressure regulation. To evaluate the contribution of common genetic variation to normal physiologic variation in serum concentrations of these cations, we conducted genome-wide association studies of serum magnesium, potassium, and sodium concentrations using approximately 2.5 million genotyped and imputed common single nucleotide polymorphisms (SNPs) in 15,366 participants of European descent from the international CHARGE Consortium. Study-specific results were combined using fixed-effects inverse-variance weighted meta-analysis. SNPs demonstrating genome-wide significant (p<5 x 10(-8)) or suggestive associations (p<4 x 10(-7)) were evaluated for replication in an additional 8,463 subjects of European descent. The association of common variants at six genomic regions (in or near MUC1, ATP2B1, DCDC5, TRPM6, SHROOM3, and MDS1) with serum magnesium levels was genome-wide significant when meta-analyzed with the replication dataset. All initially significant SNPs from the CHARGE Consortium showed nominal association with clinically defined hypomagnesemia, two showed association with kidney function, two with bone mineral density, and one of these also associated with fasting glucose levels. Common variants in CNNM2, a magnesium transporter studied only in model systems to date, as well as in CNNM3 and CNNM4, were also associated with magnesium concentrations in this study. We observed no associations with serum sodium or potassium levels exceeding p<4 x 10(-7). Follow-up studies of newly implicated genomic loci may provide additional insights into the regulation and homeostasis of human serum magnesium levels.

}, keywords = {Adult, Aged, European Continental Ancestry Group, Female, Genome-Wide Association Study, Humans, Magnesium, Male, Middle Aged, Polymorphism, Single Nucleotide, Potassium, Sodium}, issn = {1553-7404}, doi = {10.1371/journal.pgen.1001045}, author = {Meyer, Tamra E and Verwoert, Germaine C and Hwang, Shih-Jen and Glazer, Nicole L and Smith, Albert V and van Rooij, Frank J A and Ehret, Georg B and Boerwinkle, Eric and Felix, Janine F and Leak, Tennille S and Harris, Tamara B and Yang, Qiong and Dehghan, Abbas and Aspelund, Thor and Katz, Ronit and Homuth, Georg and Kocher, Thomas and Rettig, Rainer and Ried, Janina S and Gieger, Christian and Prucha, Hanna and Pfeufer, Arne and Meitinger, Thomas and Coresh, Josef and Hofman, Albert and Sarnak, Mark J and Chen, Yii-Der Ida and Uitterlinden, Andr{\'e} G and Chakravarti, Aravinda and Psaty, Bruce M and van Duijn, Cornelia M and Kao, W H Linda and Witteman, Jacqueline C M and Gudnason, Vilmundur and Siscovick, David S and Fox, Caroline S and K{\"o}ttgen, Anna} } @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 {1271, title = {CUBN is a gene locus for albuminuria.}, journal = {J Am Soc Nephrol}, volume = {22}, year = {2011}, month = {2011 Mar}, pages = {555-70}, abstract = {

Identification of genetic risk factors for albuminuria may alter strategies for early prevention of CKD progression, particularly among patients with diabetes. Little is known about the influence of common genetic variants on albuminuria in both general and diabetic populations. We performed a meta-analysis of data from 63,153 individuals of European ancestry with genotype information from genome-wide association studies (CKDGen Consortium) and from a large candidate gene study (CARe Consortium) to identify susceptibility loci for the quantitative trait urinary albumin-to-creatinine ratio (UACR) and the clinical diagnosis microalbuminuria. We identified an association between a missense variant (I2984V) in the CUBN gene, which encodes cubilin, and both UACR (P = 1.1 {\texttimes} 10(-11)) and microalbuminuria (P = 0.001). We observed similar associations among 6981 African Americans in the CARe Consortium. The associations between this variant and both UACR and microalbuminuria were significant in individuals of European ancestry regardless of diabetes status. Finally, this variant associated with a 41\% increased risk for the development of persistent microalbuminuria during 20 years of follow-up among 1304 participants with type 1 diabetes in the prospective DCCT/EDIC Study. In summary, we identified a missense CUBN variant that associates with levels of albuminuria in both the general population and in individuals with diabetes.

}, keywords = {African Continental Ancestry Group, Albuminuria, European Continental Ancestry Group, Genetic Loci, Genetic Predisposition to Disease, Humans, Mutation, Missense, Receptors, Cell Surface}, issn = {1533-3450}, doi = {10.1681/ASN.2010060598}, author = {B{\"o}ger, Carsten A and Chen, Ming-Huei and Tin, Adrienne and Olden, Matthias and K{\"o}ttgen, Anna and de Boer, Ian H and Fuchsberger, Christian and O{\textquoteright}Seaghdha, Conall M and Pattaro, Cristian and Teumer, Alexander and Liu, Ching-Ti and Glazer, Nicole L and Li, Man and O{\textquoteright}Connell, Jeffrey R and Tanaka, Toshiko and Peralta, Carmen A and Kutalik, Zolt{\'a}n and Luan, Jian{\textquoteright}an and Zhao, Jing Hua and Hwang, Shih-Jen and Akylbekova, Ermeg and Kramer, Holly and van der Harst, Pim and Smith, Albert V and Lohman, Kurt and de Andrade, Mariza and Hayward, Caroline and Kollerits, Barbara and T{\"o}njes, Anke and Aspelund, Thor and Ingelsson, Erik and Eiriksdottir, Gudny and Launer, Lenore J and Harris, Tamara B and Shuldiner, Alan R and Mitchell, Braxton D and Arking, Dan E and Franceschini, Nora and Boerwinkle, Eric and Egan, Josephine and Hernandez, Dena and Reilly, Muredach and Townsend, Raymond R and Lumley, Thomas and Siscovick, David S and Psaty, Bruce M and Kestenbaum, Bryan and Haritunians, Talin and Bergmann, Sven and Vollenweider, Peter and Waeber, G{\'e}rard and Mooser, Vincent and Waterworth, Dawn and Johnson, Andrew D and Florez, Jose C and Meigs, James B and Lu, Xiaoning and Turner, Stephen T and Atkinson, Elizabeth J and Leak, Tennille S and Aasar{\o}d, Knut and Skorpen, Frank and Syv{\"a}nen, Ann-Christine and Illig, Thomas and Baumert, Jens and Koenig, Wolfgang and Kr{\"a}mer, Bernhard K and Devuyst, Olivier and Mychaleckyj, Josyf C and Minelli, Cosetta and Bakker, Stephan J L and Kedenko, Lyudmyla and Paulweber, Bernhard and Coassin, Stefan and Endlich, Karlhans and Kroemer, Heyo K and Biffar, Reiner and Stracke, Sylvia and V{\"o}lzke, Henry and Stumvoll, Michael and M{\"a}gi, Reedik and Campbell, Harry and Vitart, Veronique and Hastie, Nicholas D and Gudnason, Vilmundur and Kardia, Sharon L R and Liu, Yongmei and Polasek, Ozren and Curhan, Gary and Kronenberg, Florian and Prokopenko, Inga and Rudan, Igor and Arnl{\"o}v, Johan and Hallan, Stein and Navis, Gerjan and Parsa, Afshin and Ferrucci, Luigi and Coresh, Josef and Shlipak, Michael G and Bull, Shelley B and Paterson, Nicholas J and Wichmann, H-Erich and Wareham, Nicholas J and Loos, Ruth J F and Rotter, Jerome I and Pramstaller, Peter P and Cupples, L Adrienne and Beckmann, Jacques S and Yang, Qiong and Heid, Iris M and Rettig, Rainer and Dreisbach, Albert W and Bochud, Murielle and Fox, Caroline S and Kao, W H L} }