TY - JOUR JF - Obesity Facts UR - https://epub.ub.uni-muenchen.de/16523/ VL - 3 N2 - Objective: The association between polymorphisms in intron 1 of the fat mass and obesity associated gene (FTO) and obesity-related traits is one of the most robust associations reported for complex traits and is established both in adults and children. However, little is known about the longitudinal dynamics of these polymorphisms on body mass index (BMI), overweight, and obesity. Methods: This study is based on the 2,732 full-term neonates of the German GINI-plus and LISA-plus birth cohorts, for whom genotyping data on the FTO variants rs1558902 (T>A) or rs9935401 (G>A) were available. Children were followed from birth up to age 6 years. Up to 9 anthropometric measurements of BMI were obtained. Fractional-Polynomial-Generalized-Estimation-Equation modeling was used to assess developmental trends and their potential dependence on genotype status. Results: We observed no evidence for BMI differences between genotypes of both variants for the first 3 years of life. However, from age 3 years onwards, we noted a higher BMI for the homozygous minor alleles carriers in comparison to the other two genotype groups. However, evidence for statistical significance was reached from the age of 4 years onwards. Conclusions: This is one of the first studies investigating in detail the development of BMI depending on FTO genotype between birth and the age of 6 years in a birth cohort not selected for the phenotype studied. We observed that the association between BMI and FTO genotype evolves gradually and becomes descriptively detectable from the age of 3 years onwards. Y1 - 2010/// SN - 1662-4025 IS - 3 AV - public ID - epub16523 EP - 180 TI - Associations between BMI and the FTO Gene Are Age Dependent: Results from the GINI and LISA Birth Cohort Studies up to Age 6 Years PB - Karger SP - 173 A1 - Rzehak, Peter A1 - Scherag, Andre A1 - Grallert, Harald A1 - Sausenthaler, Stefanie A1 - Koletzko, Sibylle A1 - Bauer, Carl Peter A1 - Schaaf, Beate A1 - Berg, Andrea von A1 - Berdel, Dietrich A1 - Borte, Michael A1 - Herbarth, Olf A1 - Kr?mer, Ursula A1 - Illig, Thomas A1 - Wichmann, Heinz-Erich A1 - Hebebrand, Johannes A1 - Heinrich, Joachim ER -