Browsing by Author "Sala, Cinzia"

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    A genome-wide association study of early menopause and the combined impact of identified variants
    (Oxford University Press, 2013) Perry, John R. B.; Corre, Tanguy; Esko, Tõnu; Chasman, Daniel I.; Fischer, Krista; Franceschini, Nora; He, Chunyan; Kutalik, Zoltan; Mangino, Massimo; Rose, Lynda M.; Smith, Albert Vernon; Stolk, Lisette; Sulem, Patrick; Weedon, Michael N.; Zhuang, Wei V.; Arnold, Alice; Ashworth, Alan; Bergmann, Sven; Buring, Julie E.; Burri, Andrea; Chen, Constance; Cornelis, Marilyn C.; Couper, David J.; Goodarzi, Mark O.; Gudnason, Vilmundur; Harris, Tamara; Hofman, Albert; Jones, Michael; Kraft, Peter; Launer, Lenore; Laven, Joop S. E.; Li, Guo; McKnight, Barbara; Masciullo, Corrado; Milani, Lili; Orr, Nicholas; Psaty, Bruce M.; ReproGen Consortium; Ridker, Paul M.; Rivadeneira, Fernando; Sala, Cinzia; Salumets, Andres; Schoemaker, Minouk; Traglia, Michela; Waeber, Gérard; Chanock, Stephen J.; Demerath, Ellen W.; Garcia, Melissa; Hankinson, Susan E.; Hu, Frank B.; Hunter, David J.; Lunetta, Kathryn L.; Metspalu, Andres; Montgomery, Grant W.; Murabito, Joanne M.; Newman, Anne B.; Ong, Ken K.; Spector, Tim D.; Stefansson, Kari; Swerdlow, Anthony J.; Thorsteinsdottir, Unnur; Van Dam, Rob M.; Uitterlinden, André G.; Visser, Jenny A.; Vollenweider, Peter; Toniolo, Daniela; Murray, Anna; Medicine, School of Medicine
    Early menopause (EM) affects up to 10% of the female population, reducing reproductive lifespan considerably. Currently, it constitutes the leading cause of infertility in the western world, affecting mainly those women who postpone their first pregnancy beyond the age of 30 years. The genetic aetiology of EM is largely unknown in the majority of cases. We have undertaken a meta-analysis of genome-wide association studies (GWASs) in 3493 EM cases and 13 598 controls from 10 independent studies. No novel genetic variants were discovered, but the 17 variants previously associated with normal age at natural menopause as a quantitative trait (QT) were also associated with EM and primary ovarian insufficiency (POI). Thus, EM has a genetic aetiology which overlaps variation in normal age at menopause and is at least partly explained by the additive effects of the same polygenic variants. The combined effect of the common variants captured by the single nucleotide polymorphism arrays was estimated to account for ∼30% of the variance in EM. The association between the combined 17 variants and the risk of EM was greater than the best validated non-genetic risk factor, smoking.
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    Genome-wide association study in almost 195,000 individuals identifies 50 previously unidentified genetic loci for eye color
    (American Association for the Advancement of Science, 2021-03-10) Simcoe, Mark; Valdes, Ana; Liu, Fan; Furlotte, Nicholas A.; Evans, David M.; Hemani, Gibran; Ring, Susan M.; Smith, George Davey; Duffy, David L.; Zhu, Gu; Gordon, Scott D.; Medland, Sarah E.; Vuckovic, Dragana; Girotto, Giorgia; Sala, Cinzia; Catamo, Eulalia; Concas, Maria Pina; Brumat, Marco; Gasparini, Paolo; Toniolo, Daniela; Cocca, Massimiliano; Robino, Antonietta; Yazar, Seyhan; Hewitt, Alex; Wu, Wenting; Kraft, Peter; Hammond, Christopher J.; Shi, Yuan; Chen, Yan; Zeng, Changqing; Klaver, Caroline C. W.; Uitterlinden, Andre G.; Ikram, M. Arfan; Hamer, Merel A.; van Duijn, Cornelia M.; Nijsten, Tamar; Han, Jiali; Mackey, David A.; Martin, Nicholas G.; Cheng, Ching-Yu; 23andMe Research Team; International Visible Trait Genetics Consortium; Hinds, David A.; Spector, Timothy D.; Kayser, Manfred; Hysi, Pirro G.; Epidemiology, School of Public Health
    Human eye color is highly heritable, but its genetic architecture is not yet fully understood. We report the results of the largest genome-wide association study for eye color to date, involving up to 192,986 European participants from 10 populations. We identify 124 independent associations arising from 61 discrete genomic regions, including 50 previously unidentified. We find evidence for genes involved in melanin pigmentation, but we also find associations with genes involved in iris morphology and structure. Further analyses in 1636 Asian participants from two populations suggest that iris pigmentation variation in Asians is genetically similar to Europeans, albeit with smaller effect sizes. Our findings collectively explain 53.2% (95% confidence interval, 45.4 to 61.0%) of eye color variation using common single-nucleotide polymorphisms. Overall, our study outcomes demonstrate that the genetic complexity of human eye color considerably exceeds previous knowledge and expectations, highlighting eye color as a genetically highly complex human trait.