10.6084/m9.figshare.5129065.v1 Amarger V. Amarger V. Bouvagnet A. Bouvagnet A. Moyon T. Moyon T. Vaiman D. Vaiman D. Darmaun D. Darmaun D. de Lauzon-Guillain B. de Lauzon-Guillain B. Robitaille J. Robitaille J. Flamant C Flamant C Rozé J.-C. Rozé J.-C. Parnet P. Parnet P. Supplementary Material for: A Common Genetic Variant in the Insulin Receptor Gene Is Associated with Eating Difficulties at 2 Years of Age in a Cohort of Preterm Infants Karger Publishers 2015 Eating behavior Genetics Insulin receptor Preterm infants Single nucleotide polymorphisms 2015-12-03 00:00:00 Dataset https://karger.figshare.com/articles/dataset/Supplementary_Material_for_A_Common_Genetic_Variant_in_the_Insulin_Receptor_Gene_Is_Associated_with_Eating_Difficulties_at_2_Years_of_Age_in_a_Cohort_of_Preterm_Infants/5129065 <b><i>Background/Aims:</i></b> Children born preterm are more likely than full-term infants to develop eating difficulties that can affect their growth. Although this behavior is certainly influenced by their fetal and postnatal history, a large individual variability exists that results from a complex interaction between genetic and environmental factors. We performed an original pilot study to identify common genetic variants associated with eating difficulties at 2 years of age in the POLYNUCA cohort of preterm infants. <b><i>Methods:</i></b> Eating behavior was assessed using a parental questionnaire in a cohort of 234 very preterm infants (including 38 pairs of twins). Eighty-two common single nucleotide polymorphisms (SNPs) were selected in a total of 40 candidate genes involved in the regulation of energy homeostasis and food intake. <b><i>Results:</i></b> Eating behavior was strongly correlated in monozygotic (r = 0.92, p = 0.001) but not dizygotic twins (r = 0.27, p = 0.14), suggesting a strong heritability of this trait. One SNP (rs11671975) in the insulin receptor <i>(INSR)</i> gene was significantly associated with eating behavior. This effect was maintained after adjustment for birth weight Z score and maternal education level, two factors that are associated with eating difficulties at 2 years of age. <b><i>Conclusion:</i></b> The <i>INSR</i> gene is potentially associated with eating difficulties in preterm infants.