| Literature DB >> 33542408 |
Miguel Seral-Cortes1, Sergio Sabroso-Lasa2, Pilar De Miguel-Etayo3,4,5, Marcela Gonzalez-Gross5,6,7, Eva Gesteiro7, Cristina Molina-Hidalgo8, Stefaan De Henauw9, Frederic Gottrand10, Christina Mavrogianni11, Yannis Manios11, Maria Plada12, Kurt Widhalm13, Anthony Kafatos14, Éva Erhardt15, Aline Meirhaeghe16, Diego Salazar-Tortosa17, Jonatan Ruiz18, Luis A Moreno3,4,5, Luis Mariano Esteban19, Idoia Labayen20.
Abstract
Obesity is the result of interactions between genes and environmental factors. Since monogenic etiology is only known in some obesity-related genes, a genetic risk score (GRS) could be useful to determine the genetic predisposition to obesity. Therefore, the aim of our study was to build a GRS able to predict genetic predisposition to overweight and obesity in European adolescents. A total of 1069 adolescents (51.3% female), aged 11-19 years participating in the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) cross-sectional study were genotyped. The sample was divided in non-overweight (non-OW) and overweight/obesity (OW/OB). From 611 single nucleotide polymorphisms (SNP) available, a first screening of 104 SNPs univariately associated with obesity (p < 0.20) was established selecting 21 significant SNPs (p < 0.05) in the multivariate model. Unweighted GRS (uGRS) was calculated by summing the number of risk alleles and weighted GRS (wGRS) by multiplying the risk alleles to each estimated coefficient. The area under curve (AUC) was calculated in uGRS (0.723) and wGRS (0.734) using tenfold internal cross-validation. Both uGRS and wGRS were significantly associated with body mass index (BMI) (p < .001). Both GRSs could potentially be considered as useful genetic tools to evaluate individual's predisposition to overweight/obesity in European adolescents.Entities:
Year: 2021 PMID: 33542408 DOI: 10.1038/s41598-021-82712-4
Source DB: PubMed Journal: Sci Rep ISSN: 2045-2322 Impact factor: 4.379