@article{ref1,
title="Case-control and within-family tests for association between 5HTTLPR and conduct problems in a longitudinal adolescent sample",
journal="Psychiatric genetics",
year="2007",
author="Sakai, Joseph T. and Lessem, Jeffrey M. and Haberstick, Brett C. and Hopfer, Christian Jean and Smolen, Andrew and Ehringer, Marissa A. and Timberlake, David and Hewitt, J. K.",
volume="17",
number="4",
pages="207-214",
abstract="BACKGROUND: Several recent studies have reported an association between the serotonin transporter 5HTTLPR (s-allele) and aggression; however, non-replications have also been reported. Inconsistencies may be explained by gene-environment interactions. Using a large general population sample, we sought to test for an association between 5HTTLPR and conduct problems, and to explore for a possible 5HTTLPR by maltreatment interaction. METHODS: Using Caucasian adolescents from the genetic-pairs sample of the National Longitudinal Study of Adolescent Health (n=1,736), we tested for an association between 5HTTLPR and both a categorical and, separately, a continuous measure of conduct problems using regression analyses while controlling for sex, family effects, and age. We then tested for an association between 5HTTLPR and conduct problems using the within-family test Quantitative Transmission Disequilibrium Test. Analyses were repeated for a measure of adolescence-limited delinquency. RESULTS: Results did not support an association between 5HTTLPR and conduct problems or delinquency. The Quantitative Transmission Disequilibrium Test analyses, which account for population stratification, were nonsignificant (F=0.17; P=0.68); introducing maltreatment as a covariate into the model did not affect this association (F=0.17; P=0.68). No association was seen between 5HTTLPR and a measure of adolescence-limited delinquency (F=0.54; P=0.46). DISCUSSION: Using two methods in a large general population sample we did not find a significant association between 5HTTLPR and conduct problems. A gene by maltreatment interaction was not supported.<p /><p>Language: en</p>",
language="en",
issn="0955-8829",
doi="10.1097/YPG.0b013e32809913c8",
url="http://dx.doi.org/10.1097/YPG.0b013e32809913c8"
}