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1. Disentangling the genetics of lean mass

Author

Karasik, David, Zillikens, M Carola, Hsu, Yi-Hsiang, Aghdassi, Ali, Akesson, Kristina, Amin, Najaf, Barroso, Inês, Bennett, David A, Bertram, Lars, Bochud, Murielle, Borecki, Ingrid B, Broer, Linda, Buchman, Aron S, Byberg, Liisa, Campbell, Harry, Campos-Obando, Natalia, Cauley, Jane A, Cawthon, Peggy M, Chambers, John C, Chen, Zhao, Cho, Nam H, Choi, Hyung Jin, Chou, Wen-Chi, Cummings, Steven R, de Groot, Lisette CPGM, De Jager, Phillip L, Demuth, Ilja, Diatchenko, Luda, Econs, Michael J, Eiriksdottir, Gudny, Enneman, Anke W, Eriksson, Joel, Eriksson, Johan G, Estrada, Karol, Evans, Daniel S, Feitosa, Mary F, Fu, Mao, Gieger, Christian, Grallert, Harald, Gudnason, Vilmundur, Lenore, Launer J, Hayward, Caroline, Hofman, Albert, Homuth, Georg, Huffman, Kim M, Husted, Lise B, Illig, Thomas, Ingelsson, Erik, Ittermann, Till, Jansson, John-Olov, Johnson, Toby, Biffar, Reiner, Jordan, Joanne M, Jula, Antti, Karlsson, Magnus, Khaw, Kay-Tee, Kilpeläinen, Tuomas O, Klopp, Norman, Kloth, Jacqueline SL, Koller, Daniel L, Kooner, Jaspal S, Kraus, William E, Kritchevsky, Stephen, Kutalik, Zoltán, Kuulasmaa, Teemu, Kuusisto, Johanna, Laakso, Markku, Lahti, Jari, Lang, Thomas, Langdahl, Bente L, Lerch, Markus M, Lewis, Joshua R, Lill, Christina, Lind, Lars, Lindgren, Cecilia, Liu, Yongmei, Livshits, Gregory, Ljunggren, Östen, Loos, Ruth JF, Lorentzon, Mattias, Luan, Jian'an, Luben, Robert N, Malkin, Ida, McGuigan, Fiona E, Medina-Gomez, Carolina, Meitinger, Thomas, Melhus, Håkan, Mellström, Dan, Michaëlsson, Karl, Mitchell, Braxton D, Morris, Andrew P, Mosekilde, Leif, Nethander, Maria, Newman, Anne B, O'Connell, Jeffery R, Oostra, Ben A, Orwoll, Eric S, Palotie, Aarno, Peacock, Munro, and Perola, Markus

Subjects
Adult, Male, meta-analysis of genome-wide association studies, Adolescent, European Continental Ancestry Group, Alpha-Ketoglutarate-Dependent Dioxygenase FTO, Medical and Health Sciences, White People, Young Adult, Versicans, ADAMTS Proteins, Engineering, Electric Impedance, 80 and over, Genetics, Humans, 2.1 Biological and endogenous factors, Absorptiometry, Polymorphism, Aetiology, skeletal muscle, Aged, Extracellular Matrix Proteins, body composition, Nutrition & Dietetics, Prevention, Human Genome, RNA-Binding Proteins, Skeletal, Body Fluid Compartments, Single Nucleotide, Middle Aged, Photon, metabolic profile, body fat, Phenotype, Adipose Tissue, Melanocortin, Muscle, Female, Type 4, Receptor, Genome-Wide Association Study
Abstract

BackgroundLean body mass (LM) plays an important role in mobility and metabolic function. We previously identified five loci associated with LM adjusted for fat mass in kilograms. Such an adjustment may reduce the power to identify genetic signals having an association with both lean mass and fat mass.ObjectivesTo determine the impact of different fat mass adjustments on genetic architecture of LM and identify additional LM loci.MethodsWe performed genome-wide association analyses for whole-body LM (20 cohorts of European ancestry with n=38,292) measured using dual-energy X-ray absorptiometry) or bioelectrical impedance analysis, adjusted for sex, age, age2, and height with or without fat mass adjustments (Model 1 no fat adjustment; Model 2 adjustment for fat mass as a percentage of body mass; Model 3 adjustment for fat mass in kilograms).ResultsSeven single-nucleotide polymorphisms (SNPs) in separate loci, including one novel LM locus (TNRC6B), were successfully replicated in an additional 47,227 individuals from 29 cohorts. Based on the strengths of the associations in Model 1 vs Model 3, we divided the LM loci into those with an effect on both lean mass and fat mass in the same direction and refer to those as "sumo wrestler" loci (FTO and MC4R). In contrast, loci with an impact specifically on LM were termed "body builder" loci (VCAN and ADAMTSL3). Using existing available genome-wide association study databases, LM increasing alleles of SNPs in sumo wrestler loci were associated with an adverse metabolic profile, whereas LM increasing alleles of SNPs in "body builder" loci were associated with metabolic protection.ConclusionsIn conclusion, we identified one novel LM locus (TNRC6B). Our results suggest that a genetically determined increase in lean mass might exert either harmful or protective effects on metabolic traits, depending on its relation to fat mass.

Published
2019

2. Overexpression of WNT16 Does Not Prevent Cortical Bone Loss Due to Glucocorticoid Treatment in Mice

Author

Alam, Imranul, Oakes, Dana K, Reilly, Austin M, Billingsley, Caylin, Sbeta, Shahed, Gerard‐O'Riley, Rita L, Acton, Dena, Sato, Amy, Bellido, Teresita, and Econs, Michael J

Subjects
GLUCOCORTICOID, WNT16, TRANSGENIC, BONE MASS, Original Article, Original Articles, OSTEOPOROSIS, GENE
Abstract

Glucocorticoids (GC) are commonly used for the treatment of a wide variety of autoimmune, pulmonary, gastrointestinal, and malignancy conditions. One of the devastating side effects of GC use is osteoporotic fractures, particularly in the spine and hip. Bisphosphonates (BP) are the most commonly prescribed pharmacological agents for the prevention and treatment of GC‐induced osteoporosis (GIO). However, GIO is marked by reduced bone formation and BP serves mainly to decrease bone resorption. The WNT signaling pathway plays a major role in bone and mineral homeostasis. Previously, we demonstrated that overexpression of WNT16 in mice led to higher bone mineral density and improved bone microarchitecture and strength. We hypothesized that WNT16 overexpression would prevent bone loss due to glucocorticoid treatment in mice. To test our hypothesis, we treated adult wild‐type and WNT16‐transgenic mice with vehicle and GC (prednisolone; 2.1 mg/kg body weight) via slow‐release pellets for 28 days. We measured bone mass and microarchitecture by dual‐energy X‐ray absorptiometry (DXA) and micro‐CT, and performed gene expression and serum biochemical analysis. We found that GC treatment compared with the vehicle significantly decreased femoral areal bone mineral density (aBMD), bone mineral content (BMC), and cortical bone area and thickness in both wild‐type and transgenic female mice. In contrast, the trabecular bone parameters at distal femur were not significantly changed by GC treatment in male and female mice for both genotypes. Further, we observed significantly lower level of serum P1NP and a tendency of higher level of serum TRAP in wild‐type and transgenic mice due to GC treatment in both sexes. Gene expression analysis showed lower mRNA levels of Wnt16, Opg, and Opg/Rankl ratio in GC‐treated female mice for both genotypes compared with the sex‐matched vehicle‐treated mice. These data suggest that although WNT16 overexpression resulted in higher baseline bone mineral density and bone volume per trabecular volume (BV/TV) in the transgenic mice, this was insufficient to prevent bone loss in mice due to glucocorticoid treatment. © 2018 The Authors JBMR Plus published by Wiley Periodicals, Inc. on behalf of American Society for Bone and Mineral Research.

Published
2018

3. Genome-wide association study in 79,366 European-ancestry individuals informs the genetic architecture of 25-hydroxyvitamin D levels

Author

Jiang, Xia, O'Reilly, Paul F, Aschard, Hugues, Hsu, Yi-Hsiang, Richards, J Brent, Dupuis, Josée, Ingelsson, Erik, Karasik, David, Pilz, Stefan, Berry, Diane, Kestenbaum, Bryan, Zheng, Jusheng, Luan, Jianan, Sofianopoulou, Eleni, Streeten, Elizabeth A, Albanes, Demetrius, Lutsey, Pamela L, Yao, Lu, Tang, Weihong, Econs, Michael J, Wallaschofski, Henri, Völzke, Henry, Zhou, Ang, Power, Chris, McCarthy, Mark I, Michos, Erin D, Boerwinkle, Eric, Weinstein, Stephanie J, Freedman, Neal D, Huang, Wen-Yi, Van Schoor, Natasja M, Van Der Velde, Nathalie, Groot, Lisette CPGM De, Enneman, Anke, Cupples, L Adrienne, Booth, Sarah L, Vasan, Ramachandran S, Liu, Ching-Ti, Zhou, Yanhua, Ripatti, Samuli, Ohlsson, Claes, Vandenput, Liesbeth, Lorentzon, Mattias, Eriksson, Johan G, Shea, M Kyla, Houston, Denise K, Kritchevsky, Stephen B, Liu, Yongmei, Lohman, Kurt K, Ferrucci, Luigi, Peacock, Munro, Gieger, Christian, Beekman, Marian, Slagboom, Eline, Deelen, Joris, Heemst, Diana Van, Kleber, Marcus E, März, Winfried, De Boer, Ian H, Wood, Alexis C, Rotter, Jerome I, Rich, Stephen S, Robinson-Cohen, Cassianne, Den Heijer, Martin, Jarvelin, Marjo-Riitta, Cavadino, Alana, Joshi, Peter K, Wilson, James F, Hayward, Caroline, Lind, Lars, Michaëlsson, Karl, Trompet, Stella, Zillikens, M Carola, Uitterlinden, Andre G, Rivadeneira, Fernando, Broer, Linda, Zgaga, Lina, Campbell, Harry, Theodoratou, Evropi, Farrington, Susan M, Timofeeva, Maria, Dunlop, Malcolm G, Valdes, Ana M, Tikkanen, Emmi, Lehtimäki, Terho, Lyytikäinen, Leo-Pekka, Kähönen, Mika, Raitakari, Olli T, Mikkilä, Vera, Ikram, M Arfan, Sattar, Naveed, Jukema, J Wouter, Wareham, Nicholas J, Langenberg, Claudia, Forouhi, Nita G, Gundersen, Thomas E, Khaw, Kay-Tee, Butterworth, Adam S, Danesh, John, Spector, Timothy, Wang, Thomas J, Hyppönen, Elina, Kraft, Peter, and Kiel, Douglas P

Subjects
Cohort Studies, Male, Vesicular Transport Proteins, Humans, Female, Vitamin D, Polymorphism, Single Nucleotide, White People, Amidohydrolases, Autoimmune Diseases, Genome-Wide Association Study
Abstract

Vitamin D is a steroid hormone precursor that is associated with a range of human traits and diseases. Previous GWAS of serum 25-hydroxyvitamin D concentrations have identified four genome-wide significant loci (GC, NADSYN1/DHCR7, CYP2R1, CYP24A1). In this study, we expand the previous SUNLIGHT Consortium GWAS discovery sample size from 16,125 to 79,366 (all European descent). This larger GWAS yields two additional loci harboring genome-wide significant variants (P = 4.7×10-9 at rs8018720 in SEC23A, and P = 1.9×10-14 at rs10745742 in AMDHD1). The overall estimate of heritability of 25-hydroxyvitamin D serum concentrations attributable to GWAS common SNPs is 7.5%, with statistically significant loci explaining 38% of this total. Further investigation identifies signal enrichment in immune and hematopoietic tissues, and clustering with autoimmune diseases in cell-type-specific analysis. Larger studies are required to identify additional common SNPs, and to explore the role of rare or structural variants and gene-gene interactions in the heritability of circulating 25-hydroxyvitamin D levels.

Published
2018
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4. Genome-wide association study in 79,366 European-ancestry individuals informs the genetic architecture of 25-hydroxyvitamin D levels

Author

Jiang, Xia, O'Reilly, Paul F, Aschard, Hugues, Hsu, Yi-Hsiang, Richards, J Brent, Dupuis, Josée, Ingelsson, Erik, Karasik, David, Pilz, Stefan, Berry, Diane, Kestenbaum, Bryan, Zheng, Jusheng, Luan, Jianan, Sofianopoulou, Eleni, Streeten, Elizabeth A, Albanes, Demetrius, Lutsey, Pamela L, Yao, Lu, Tang, Weihong, Econs, Michael J, Wallaschofski, Henri, Völzke, Henry, Zhou, Ang, Power, Chris, McCarthy, Mark I, Michos, Erin D, Boerwinkle, Eric, Weinstein, Stephanie J, Freedman, Neal D, Huang, Wen-Yi, Van Schoor, Natasja M, van der Velde, Nathalie, Groot, Lisette CPGM de, Enneman, Anke, Cupples, L Adrienne, Booth, Sarah L, Vasan, Ramachandran S, Liu, Ching-Ti, Zhou, Yanhua, Ripatti, Samuli, Ohlsson, Claes, Vandenput, Liesbeth, Lorentzon, Mattias, Eriksson, Johan G, Shea, M Kyla, Houston, Denise K, Kritchevsky, Stephen B, Liu, Yongmei, Lohman, Kurt K, Ferrucci, Luigi, Peacock, Munro, Gieger, Christian, Beekman, Marian, Slagboom, Eline, Deelen, Joris, Heemst, Diana van, Kleber, Marcus E, März, Winfried, de Boer, Ian H, Wood, Alexis C, Rotter, Jerome I, Rich, Stephen S, Robinson-Cohen, Cassianne, den Heijer, Martin, Jarvelin, Marjo-Riitta, Cavadino, Alana, Joshi, Peter K, Wilson, James F, Hayward, Caroline, Lind, Lars, Michaëlsson, Karl, Trompet, Stella, Zillikens, M Carola, Uitterlinden, Andre G, Rivadeneira, Fernando, Broer, Linda, Zgaga, Lina, Campbell, Harry, Theodoratou, Evropi, Farrington, Susan M, Timofeeva, Maria, Dunlop, Malcolm G, Valdes, Ana M, Tikkanen, Emmi, Lehtimäki, Terho, Lyytikäinen, Leo-Pekka, Kähönen, Mika, Raitakari, Olli T, Mikkilä, Vera, Ikram, M Arfan, Sattar, Naveed, Jukema, J Wouter, Wareham, Nicholas J, Langenberg, Claudia, Forouhi, Nita G, Gundersen, Thomas E, Khaw, Kay-Tee, Butterworth, Adam S, and Danesh, John

Subjects
Male, Inflammatory and immune system, Human Genome, Vesicular Transport Proteins, Single Nucleotide, White People, Autoimmune Diseases, Amidohydrolases, Cohort Studies, Clinical Research, Genetics, Humans, 2.1 Biological and endogenous factors, Female, Vitamin D, Polymorphism, Aetiology, Genome-Wide Association Study
Abstract

Vitamin D is a steroid hormone precursor that is associated with a range of human traits and diseases. Previous GWAS of serum 25-hydroxyvitamin D concentrations have identified four genome-wide significant loci (GC, NADSYN1/DHCR7, CYP2R1, CYP24A1). In this study, we expand the previous SUNLIGHT Consortium GWAS discovery sample size from 16,125 to 79,366 (all European descent). This larger GWAS yields two additional loci harboring genome-wide significant variants (P = 4.7×10-9 at rs8018720 in SEC23A, and P = 1.9×10-14 at rs10745742 in AMDHD1). The overall estimate of heritability of 25-hydroxyvitamin D serum concentrations attributable to GWAS common SNPs is 7.5%, with statistically significant loci explaining 38% of this total. Further investigation identifies signal enrichment in immune and hematopoietic tissues, and clustering with autoimmune diseases in cell-type-specific analysis. Larger studies are required to identify additional common SNPs, and to explore the role of rare or structural variants and gene-gene interactions in the heritability of circulating 25-hydroxyvitamin D levels.

Published
2018

5. Parent-of-origin-specific allelic associations among 106 genomic loci for age at menarche

Author

Perry, John Rb, Day, Felix, Elks, Cathy E, Sulem, Patrick, Thompson, Deborah J, Ferreira, Teresa, He, Chunyan, Chasman, Daniel I, Esko, Tõnu, Thorleifsson, Gudmar, Albrecht, Eva, Ang, Wei Q, Corre, Tanguy, Cousminer, Diana L, Feenstra, Bjarke, Franceschini, Nora, Ganna, Andrea, Johnson, Andrew D, Kjellqvist, Sanela, Lunetta, Kathryn L, McMahon, George, Nolte, Ilja M, Paternoster, Lavinia, Porcu, Eleonora, Smith, Albert V, Stolk, Lisette, Teumer, Alexander, Tšernikova, Natalia, Tikkanen, Emmi, Ulivi, Sheila, Wagner, Erin K, Amin, Najaf, Bierut, Laura J, Byrne, Enda M, Hottenga, Jouke-Jan, Koller, Daniel L, Mangino, Massimo, Pers, Tune H, Yerges-Armstrong, Laura M, Zhao, Jing Hua, Andrulis, Irene L, Anton-Culver, Hoda, Atsma, Femke, Bandinelli, Stefania, Beckmann, Matthias W, Benitez, Javier, Blomqvist, Carl, Bojesen, Stig E, Bolla, Manjeet K, Bonanni, Bernardo, Brauch, Hiltrud, Brenner, Hermann, Buring, Julie E, Chang-Claude, Jenny, Chanock, Stephen, Chen, Jinhui, Chenevix-Trench, Georgia, Collée, J Margriet, Couch, Fergus J, Couper, David, Coveillo, Andrea D, Cox, Angela, Czene, Kamila, D'adamo, Adamo Pio, Smith, George Davey, De Vivo, Immaculata, Demerath, Ellen W, Dennis, Joe, Devilee, Peter, Dieffenbach, Aida K, Dunning, Alison M, Eiriksdottir, Gudny, Eriksson, Johan G, Fasching, Peter A, Ferrucci, Luigi, Flesch-Janys, Dieter, Flyger, Henrik, Foroud, Tatiana, Franke, Lude, Garcia, Melissa E, García-Closas, Montserrat, Geller, Frank, De Geus, Eco Ej, Giles, Graham G, Gudbjartsson, Daniel F, Gudnason, Vilmundur, Guénel, Pascal, Guo, Suiqun, Hall, Per, Hamann, Ute, Haring, Robin, Hartman, Catharina A, Heath, Andrew C, Hofman, Albert, Hooning, Maartje J, Hopper, John L, Hu, Frank B, Hunter, David J, Karasik, David, Kiel, Douglas P, Knight, Julia A, Kosma, Veli-Matti, Kutalik, Zoltan, Lai, Sandra, Lambrechts, Diether, Lindblom, Annika, Mägi, Reedik, Magnusson, Patrik K, Mannermaa, Arto, Martin, Nicholas G, Masson, Gisli, McArdle, Patrick F, McArdle, Wendy L, Melbye, Mads, Michailidou, Kyriaki, Mihailov, Evelin, Milani, Lili, Milne, Roger L, Nevanlinna, Heli, Neven, Patrick, Nohr, Ellen A, Oldehinkel, Albertine J, Oostra, Ben A, Palotie, Aarno, Peacock, Munro, Pedersen, Nancy L, Peterlongo, Paolo, Peto, Julian, Pharoah, Paul Dp, Postma, Dirkje S, Pouta, Anneli, Pylkäs, Katri, Radice, Paolo, Ring, Susan, Rivadeneira, Fernando, Robino, Antonietta, Rose, Lynda M, Rudolph, Anja, Salomaa, Veikko, Sanna, Serena, Schlessinger, David, Schmidt, Marjanka K, Southey, Mellissa C, Sovio, Ulla, Stampfer, Meir J, Stöckl, Doris, Storniolo, Anna M, Timpson, Nicholas J, Tyrer, Jonathan, Visser, Jenny A, Vollenweider, Peter, Völzke, Henry, Waeber, Gerard, Waldenberger, Melanie, Wallaschofski, Henri, Wang, Qin, Willemsen, Gonneke, Winqvist, Robert, Wolffenbuttel, Bruce Hr, Wright, Margaret J, Australian Ovarian Cancer Study, GENICA Network, KConFab, LifeLines Cohort Study, InterAct Consortium, Early Growth Genetics (EGG) Consortium, Boomsma, Dorret I, Econs, Michael J, Khaw, Kay-Tee, Loos, Ruth Jf, McCarthy, Mark I, Montgomery, Grant W, Rice, John P, Streeten, Elizabeth A, Thorsteinsdottir, Unnur, Van Duijn, Cornelia M, Alizadeh, Behrooz Z, Bergmann, Sven, Boerwinkle, Eric, Boyd, Heather A, Crisponi, Laura, Gasparini, Paolo, Gieger, Christian, Harris, Tamara B, Ingelsson, Erik, Järvelin, Marjo-Riitta, Kraft, Peter, Lawlor, Debbie, Metspalu, Andres, Pennell, Craig E, Ridker, Paul M, Snieder, Harold, Sørensen, Thorkild Ia, Spector, Tim D, Strachan, David P, Uitterlinden, André G, Wareham, Nicholas J, Widen, Elisabeth, Zygmunt, Marek, Murray, Anna, Easton, Douglas F, Stefansson, Kari, Murabito, Joanne M, and Ong, Ken K

Subjects
Male, Parents, Hypothalamo-Hypophyseal System, Adolescent, Receptors, Retinoic Acid, Ubiquitin-Protein Ligases, Quantitative Trait Loci, Breast Neoplasms, Polymorphism, Single Nucleotide, Body Mass Index, Genomic Imprinting, Potassium Channels, Tandem Pore Domain, Humans, Obesity, Child, Alleles, 2. Zero hunger, Menarche, Calcium-Binding Proteins, Ovary, Age Factors, Membrane Proteins, Proteins, 3. Good health, Europe, Diabetes Mellitus, Type 2, Receptors, GABA-B, Ribonucleoproteins, Cardiovascular Diseases, Genetic Loci, Intercellular Signaling Peptides and Proteins, Female, Genome-Wide Association Study
Abstract

Age at menarche is a marker of timing of puberty in females. It varies widely between individuals, is a heritable trait and is associated with risks for obesity, type 2 diabetes, cardiovascular disease, breast cancer and all-cause mortality. Studies of rare human disorders of puberty and animal models point to a complex hypothalamic-pituitary-hormonal regulation, but the mechanisms that determine pubertal timing and underlie its links to disease risk remain unclear. Here, using genome-wide and custom-genotyping arrays in up to 182,416 women of European descent from 57 studies, we found robust evidence (P < 5 × 10(-8)) for 123 signals at 106 genomic loci associated with age at menarche. Many loci were associated with other pubertal traits in both sexes, and there was substantial overlap with genes implicated in body mass index and various diseases, including rare disorders of puberty. Menarche signals were enriched in imprinted regions, with three loci (DLK1-WDR25, MKRN3-MAGEL2 and KCNK9) demonstrating parent-of-origin-specific associations concordant with known parental expression patterns. Pathway analyses implicated nuclear hormone receptors, particularly retinoic acid and γ-aminobutyric acid-B2 receptor signalling, among novel mechanisms that regulate pubertal timing in humans. Our findings suggest a genetic architecture involving at least hundreds of common variants in the coordinated timing of the pubertal transition.

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