TY - JOUR T1 - FTO genotype is associated with phenotypic variability of body mass index. JF - Nature Y1 - 2012 A1 - Yang, Jian A1 - Loos, Ruth J F A1 - Powell, Joseph E A1 - Medland, Sarah E A1 - Speliotes, Elizabeth K A1 - Chasman, Daniel I A1 - Rose, Lynda M A1 - Thorleifsson, Gudmar A1 - Steinthorsdottir, Valgerdur A1 - Mägi, Reedik A1 - Waite, Lindsay A1 - Smith, Albert Vernon A1 - Yerges-Armstrong, Laura M A1 - Monda, Keri L A1 - Hadley, David A1 - Mahajan, Anubha A1 - Li, Guo A1 - Kapur, Karen A1 - Vitart, Veronique A1 - Huffman, Jennifer E A1 - Wang, Sophie R A1 - Palmer, Cameron A1 - Esko, Tõnu A1 - Fischer, Krista A1 - Zhao, Jing Hua A1 - Demirkan, Ayse A1 - Isaacs, Aaron A1 - Feitosa, Mary F A1 - Luan, Jian'an A1 - Heard-Costa, Nancy L A1 - White, Charles A1 - Jackson, Anne U A1 - Preuss, Michael A1 - Ziegler, Andreas A1 - Eriksson, Joel A1 - Kutalik, Zoltán A1 - Frau, Francesca A1 - Nolte, Ilja M A1 - van Vliet-Ostaptchouk, Jana V A1 - Hottenga, Jouke-Jan A1 - Jacobs, Kevin B A1 - Verweij, Niek A1 - Goel, Anuj A1 - Medina-Gómez, Carolina A1 - Estrada, Karol A1 - Bragg-Gresham, Jennifer Lynn A1 - Sanna, Serena A1 - Sidore, Carlo A1 - Tyrer, Jonathan A1 - Teumer, Alexander A1 - Prokopenko, Inga A1 - Mangino, Massimo A1 - Lindgren, Cecilia M A1 - Assimes, Themistocles L A1 - Shuldiner, Alan R A1 - Hui, Jennie A1 - Beilby, John P A1 - McArdle, Wendy L A1 - Hall, Per A1 - Haritunians, Talin A1 - Zgaga, Lina A1 - Kolcic, Ivana A1 - Polasek, Ozren A1 - Zemunik, Tatijana A1 - Oostra, Ben A A1 - Junttila, M Juhani A1 - Grönberg, Henrik A1 - Schreiber, Stefan A1 - Peters, Annette A1 - Hicks, Andrew A A1 - Stephens, Jonathan A1 - Foad, Nicola S A1 - Laitinen, Jaana A1 - Pouta, Anneli A1 - Kaakinen, Marika A1 - Willemsen, Gonneke A1 - Vink, Jacqueline M A1 - Wild, Sarah H A1 - Navis, Gerjan A1 - Asselbergs, Folkert W A1 - Homuth, Georg A1 - John, Ulrich A1 - Iribarren, Carlos A1 - Harris, Tamara A1 - Launer, Lenore A1 - Gudnason, Vilmundur A1 - O'Connell, Jeffrey R A1 - Boerwinkle, Eric A1 - Cadby, Gemma A1 - Palmer, Lyle J A1 - James, Alan L A1 - Musk, Arthur W A1 - Ingelsson, Erik A1 - Psaty, Bruce M A1 - Beckmann, Jacques S A1 - Waeber, Gérard A1 - Vollenweider, Peter A1 - Hayward, Caroline A1 - Wright, Alan F A1 - Rudan, Igor A1 - Groop, Leif C A1 - Metspalu, Andres A1 - Khaw, Kay Tee A1 - van Duijn, Cornelia M A1 - Borecki, Ingrid B A1 - Province, Michael A A1 - Wareham, Nicholas J A1 - Tardif, Jean-Claude A1 - Huikuri, Heikki V A1 - Cupples, L Adrienne A1 - Atwood, Larry D A1 - Fox, Caroline S A1 - Boehnke, Michael A1 - Collins, Francis S A1 - Mohlke, Karen L A1 - Erdmann, Jeanette A1 - Schunkert, Heribert A1 - Hengstenberg, Christian A1 - Stark, Klaus A1 - Lorentzon, Mattias A1 - Ohlsson, Claes A1 - Cusi, Daniele A1 - Staessen, Jan A A1 - van der Klauw, Melanie M A1 - Pramstaller, Peter P A1 - Kathiresan, Sekar A1 - Jolley, Jennifer D A1 - Ripatti, Samuli A1 - Jarvelin, Marjo-Riitta A1 - de Geus, Eco J C A1 - Boomsma, Dorret I A1 - Penninx, Brenda A1 - Wilson, James F A1 - Campbell, Harry A1 - Chanock, Stephen J A1 - van der Harst, Pim A1 - Hamsten, Anders A1 - Watkins, Hugh A1 - Hofman, Albert A1 - Witteman, Jacqueline C A1 - Zillikens, M Carola A1 - Uitterlinden, André G A1 - Rivadeneira, Fernando A1 - Zillikens, M Carola A1 - Kiemeney, Lambertus A A1 - Vermeulen, Sita H A1 - Abecasis, Goncalo R A1 - Schlessinger, David A1 - Schipf, Sabine A1 - Stumvoll, Michael A1 - Tönjes, Anke A1 - Spector, Tim D A1 - North, Kari E A1 - Lettre, Guillaume A1 - McCarthy, Mark I A1 - Berndt, Sonja I A1 - Heath, Andrew C A1 - Madden, Pamela A F A1 - Nyholt, Dale R A1 - Montgomery, Grant W A1 - Martin, Nicholas G A1 - McKnight, Barbara A1 - Strachan, David P A1 - Hill, William G A1 - Snieder, Harold A1 - Ridker, Paul M A1 - Thorsteinsdottir, Unnur A1 - Stefansson, Kari A1 - Frayling, Timothy M A1 - Hirschhorn, Joel N A1 - Goddard, Michael E A1 - Visscher, Peter M KW - Alpha-Ketoglutarate-Dependent Dioxygenase FTO KW - Body Height KW - Body Mass Index KW - Co-Repressor Proteins KW - Female KW - Genetic Variation KW - Genome-Wide Association Study KW - Humans KW - Male KW - Nerve Tissue Proteins KW - Phenotype KW - Polymorphism, Single Nucleotide KW - Proteins KW - Repressor Proteins AB -

There is evidence across several species for genetic control of phenotypic variation of complex traits, such that the variance among phenotypes is genotype dependent. Understanding genetic control of variability is important in evolutionary biology, agricultural selection programmes and human medicine, yet for complex traits, no individual genetic variants associated with variance, as opposed to the mean, have been identified. Here we perform a meta-analysis of genome-wide association studies of phenotypic variation using ∼170,000 samples on height and body mass index (BMI) in human populations. We report evidence that the single nucleotide polymorphism (SNP) rs7202116 at the FTO gene locus, which is known to be associated with obesity (as measured by mean BMI for each rs7202116 genotype), is also associated with phenotypic variability. We show that the results are not due to scale effects or other artefacts, and find no other experiment-wise significant evidence for effects on variability, either at loci other than FTO for BMI or at any locus for height. The difference in variance for BMI among individuals with opposite homozygous genotypes at the FTO locus is approximately 7%, corresponding to a difference of ∼0.5 kilograms in the standard deviation of weight. Our results indicate that genetic variants can be discovered that are associated with variability, and that between-person variability in obesity can partly be explained by the genotype at the FTO locus. The results are consistent with reported FTO by environment interactions for BMI, possibly mediated by DNA methylation. Our BMI results for other SNPs and our height results for all SNPs suggest that most genetic variants, including those that influence mean height or mean BMI, are not associated with phenotypic variance, or that their effects on variability are too small to detect even with samples sizes greater than 100,000.

VL - 490 IS - 7419 U1 - http://www.ncbi.nlm.nih.gov/pubmed/22982992?dopt=Abstract ER -