Open AccessA study of the possible association between adenosine A 2A receptor gene polymorphisms and attention‐deficit hyperactivity disorder traits
Author(s) -
Molero Y.,
Gumpert C.,
Serlachius E.,
Lichtenstein P.,
Walum H.,
Johansson D.,
Anckarsäter H.,
Westberg L.,
Eriksson E.,
Halldner L.
Publication year - 2013
Publication title -
genes, brain and behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.315
H-Index - 91
eISSN - 1601-183X
pISSN - 1601-1848
DOI - 10.1111/gbb.12015
Subject(s) - attention deficit hyperactivity disorder , single nucleotide polymorphism , candidate gene , genetic association , genome wide association study , genetics , psychology , gene , medicine , biology , clinical psychology , genotype
The adenosine A 2A receptor ( ADORA2A ) is linked to the dopamine neurotransmitter system and is also implicated in the regulation of alertness, suggesting a potential association with attention‐deficit hyperactivity disorder ( ADHD ) traits. Furthermore, animal studies suggest that the ADORA2A may influence ADHD ‐like behavior. For that reason, the ADORA2A gene emerges as a promising candidate for studying the etiology of ADHD traits. The aim of this study was to examine the relationship between ADORA2A gene polymorphisms and ADHD traits in a large population‐based sample. This study was based on the Child and Adolescent Twin Study in Sweden ( CATSS ), and included 1747 twins. Attention‐deficit hyperactivity disorder traits were assessed through parental reports, and samples of DNA were collected. Associations between six single nucleotide polymorphisms ( SNPs ) and ADHD traits were examined, and results suggested a nominal association between ADHD traits and three of these SNPs : rs3761422, rs5751876 and rs35320474. For one of the SNPs , rs35320474, results remained significant after correction for multiple comparisons. These results indicate the possibility that the ADORA2A gene may be involved in ADHD traits. However, more studies replicating the present results are warranted before this association can be confirmed .