title: No evidence for preferential transmission of common valine allele of the Val66Met polymorphism of the brain-derived neurotrophic factor gene (BDNF) in ADHD.
abstract: Attention deficit/hyperactivity disorder (ADHD) is a highly heritable common neurodevelopmental disorder with onset in childhood. A coding SNP (rs6265, Val66Met) of the brain-derived neurotrophic factor gene (BDNF) has recently been associated with ADHD. More specifically, paternal over-transmission of the common Val66 allele to affected children had been observed. We aimed to confirm these findings in a large, sufficiently powered, and well characterized German ADHD family sample. The Val66Met polymorphism of BDNF was genotyped in 294 families comprising one or more affected sibs (468 children). Contrary to previous reports, we did not observe over-transmission of the common Val66 allele, from either parent to affected children. We did not find support for an involvement of the Val66 allele of the Val66Met polymorphism of BDNF in the pathogenesis of ADHD in our sample.
authors.affiliation: Department of Child and Adolescent Psychiatry, Rheinische Kliniken Essen, University of Duisburg-Essen, Essen, Germany.
authors.forename: B G
authors.initials: BG
authors.lastname: Schimmelmann
authors.forename: S
authors.initials: S
authors.lastname: Friedel
authors.forename: A
authors.initials: A
authors.lastname: Dempfle
authors.forename: A
authors.initials: A
authors.lastname: Warnke
authors.forename: K P
authors.initials: KP
authors.lastname: Lesch
authors.forename: S
authors.initials: S
authors.lastname: Walitza
authors.forename: T J
authors.initials: TJ
authors.lastname: Renner
authors.forename: M
authors.initials: M
authors.lastname: Romanos
authors.forename: B
authors.initials: B
authors.lastname: Herpertz-Dahlmann
authors.forename: M
authors.initials: M
authors.lastname: Linder
authors.forename: H
authors.initials: H
authors.lastname: Schäfer
authors.forename: C
authors.initials: C
authors.lastname: Seitz
authors.forename: H
authors.initials: H
authors.lastname: Palmason
authors.forename: C
authors.initials: C
authors.lastname: Freitag
authors.forename: J
authors.initials: J
authors.lastname: Meyer
authors.forename: K
authors.initials: K
authors.lastname: Konrad
authors.forename: A
authors.initials: A
authors.lastname: Hinney
authors.forename: J
authors.initials: J
authors.lastname: Hebebrand
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000235:genetics*; D019208:Brain-Derived Neurotrophic Factor / Q000235:genetics*; D002648:Child; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D010375:Pedigree; D020641:Polymorphism, Single Nucleotide; D014633:Valine / Q000235:genetics
chemical_list: D019208:Brain-Derived Neurotrophic Factor; D014633:Valine