RT Journal Article T1 Gene-lifestyle interaction and type 2 diabetes: the EPIC interact case-cohort study. A1 Langenberg, Claudia A1 Sharp, Stephen J A1 Franks, Paul W A1 Scott, Robert A A1 Deloukas, Panos A1 Forouhi, Nita G A1 Froguel, Philippe A1 Groop, Leif C A1 Hansen, Torben A1 Palla, Luigi A1 Pedersen, Oluf A1 Schulze, Matthias B A1 Tormo, Maria-Jose A1 Wheeler, Eleanor A1 Agnoli, Claudia A1 Arriola, Larraitz A1 Barricarte, Aurelio A1 Boeing, Heiner A1 Clarke, Geraldine M A1 Clavel-Chapelon, Françoise A1 Duell, Eric J A1 Fagherazzi, Guy A1 Kaaks, Rudolf A1 Kerrison, Nicola D A1 Key, Timothy J A1 Khaw, Kay Tee A1 Kröger, Janine A1 Lajous, Martin A1 Morris, Andrew P A1 Navarro, Carmen A1 Nilsson, Peter M A1 Overvad, Kim A1 Palli, Domenico A1 Panico, Salvatore A1 Quirós, J Ramón A1 Rolandsson, Olov A1 Sacerdote, Carlotta A1 Sanchez-Perez, Maria-Jose A1 Slimani, Nadia A1 Spijkerman, Annemieke M W A1 Tumino, Rosario A1 van der A, Daphne L A1 van der Schouw, Yvonne T A1 Barroso, Inês A1 McCarthy, Mark I A1 Riboli, Elio A1 Wareham, Nicholas J K1 Alelos K1 Índice de Masa Corporal K1 Estudios de Cohortes K1 Diabetes Mellitus Tipo 2 K1 Dieta Mediterránea K1 Femenino K1 Predisposición Genética a la Enfermedad K1 Humanos K1 Estilo de Vida K1 Masculino K1 Mediana Edad K1 Actividad Motora K1 Polimorfismo de Nucleótido Simple K1 Modelos de Riesgos Proporcionales K1 Factores de Riesgo K1 Circunferencia de la Cintura AB BACKGROUNDUnderstanding of the genetic basis of type 2 diabetes (T2D) has progressed rapidly, but the interactions between common genetic variants and lifestyle risk factors have not been systematically investigated in studies with adequate statistical power. Therefore, we aimed to quantify the combined effects of genetic and lifestyle factors on risk of T2D in order to inform strategies for prevention.METHODS AND FINDINGSThe InterAct study includes 12,403 incident T2D cases and a representative sub-cohort of 16,154 individuals from a cohort of 340,234 European participants with 3.99 million person-years of follow-up. We studied the combined effects of an additive genetic T2D risk score and modifiable and non-modifiable risk factors using Prentice-weighted Cox regression and random effects meta-analysis methods. The effect of the genetic score was significantly greater in younger individuals (p for interaction  = 1.20×10-4). Relative genetic risk (per standard deviation [4.4 risk alleles]) was also larger in participants who were leaner, both in terms of body mass index (p for interaction  = 1.50×10-3) and waist circumference (p for interaction  = 7.49×10-9). Examination of absolute risks by strata showed the importance of obesity for T2D risk. The 10-y cumulative incidence of T2D rose from 0.25% to 0.89% across extreme quartiles of the genetic score in normal weight individuals, compared to 4.22% to 7.99% in obese individuals. We detected no significant interactions between the genetic score and sex, diabetes family history, physical activity, or dietary habits assessed by a Mediterranean diet score.CONCLUSIONSThe relative effect of a T2D genetic risk score is greater in younger and leaner participants. However, this sub-group is at low absolute risk and would not be a logical target for preventive interventions. The high absolute risk associated with obesity at any level of genetic risk highlights the importance of universal rather than targeted approaches to lifestyle intervention. PB Public Library of Science SN 1549-1277 YR 2014 FD 2014-05-20 LK http://hdl.handle.net/10668/1797 UL http://hdl.handle.net/10668/1797 LA en NO Langenberg C, Sharp SJ, Franks PW, Scott RA, Deloukas P, Forouhi NG, et al. Gene-lifestyle interaction and type 2 diabetes: the EPIC interact case-cohort study. PLoS Med.. 2014 ; 11(5):e1001647 NO Journal Article; Research Support, Non-U.S. Gov't; DS RISalud RD Apr 19, 2025