Diet/Lifestyle Intervention Influences Genetic Effect of TCF7L2 Genotype on Glycemic Control and Adiposity Among 4,114 Individuals Enrolled in Seven Randomized Controlled Trials

Autor: Jordi Salas-Salvadó, Sujatha Rajaram, Joan Sabaté, Torben Hansen, Yoriko Heianza, Miguel Ángel Martínez-González, Wim H. M. Saris, Matti Uusitupa, Montserrat Cofán, Jörg Hager, Alena Stancacova, Jaakko Tuomilehto, Meng Gao, Dianjianyi Sun, Wenjie Ma, J. Alfredo Martínez, Jaana Lindström, Peter Arner, Liana C Del Gobbo, Markku Laakso, Thorkild I. A. Sørensen, Lu Qi, Jean-Michel Oppert, Tao Huang, Arne Astrup, Oluf Pedersen, Mathilde Svendstrup, Jan Polak, Dolores Corella, Dominique Langin, Gabby B. Hul, Zhe Fang, Vanessa D. de Mello, Christopher D. Gardner, Emilio Ros
Rok vydání: 2018
Předmět:
Zdroj: SSRN Electronic Journal.
ISSN: 1556-5068
DOI: 10.2139/ssrn.3260786
Popis: Background: The transcription factor 7-like 2 gene (TCF7L2) is the strongest locus associated by the variant rs7903146 with type 2 diabetes (T2D) identified to date. Whether diet/lifestyle intervention modifies genetic effect of TCF7L2 variant on glucose homeostasis and adiposity is still controversial. Objective: To quantify the modification effects of the diet/lifestyle interventions on genetic association of TCF7L2 variant rs7903146 with glycemic control and adiposity changes in randomized controlled trials (RCTs). Design A large collaborative analysis of individual-participant data from seven RCTs. Setting RCTs conducted in adults reporting changes in glycemic traits, body weight, or waist circumference by TCF7L2 rs7903146 after dietary/lifestyle-based interventions. Gene-treatment interaction models were fitted to individual participant data from all studies, using allele dose coding for genetic effects and a common set of covariates. Results: We included seven eligible RCTs for the joint analysis (n=4,114 participants). Overall, a significant interaction between TCF7L2 rs7903146 and diet/lifestyle interventions on decrease in fasting glucose was observed. Compared with control, diet/lifestyle interventions reduced fasting glucose by -0.17 (95% CI, -0.32 to -0.02) mmol/L (test for heterogeneity: I2=45.1%, p
Databáze: OpenAIRE