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dc.contributor.authorWeber, Heike
dc.contributor.authorKittel-Schneider, S.
dc.contributor.authorHeupel, J
dc.contributor.authorWeißflog, L.
dc.contributor.authorKent, Lindsey
dc.contributor.authorFreudenberg, F.
dc.contributor.authorAlttoa, A.
dc.contributor.authorPost, A.
dc.contributor.authorHerterich, S.
dc.contributor.authorHaavik, Jan
dc.contributor.authorHalmøy, Anne
dc.contributor.authorFasmer, Ole Bernt
dc.contributor.authorLandaas, Elisabeth Toverund
dc.contributor.authorJohansson, Stefan
dc.contributor.authorCormand, Bru
dc.contributor.authorRibasés, Marta
dc.contributor.authorSánchez-Mora, Cristina
dc.contributor.authorRamos-Quiroga, Josep Antoni
dc.contributor.authorFranke, B.
dc.contributor.authorLesch, K-P.
dc.contributor.authorReif, Andreas
dc.identifier.citationWeber , H , Kittel-Schneider , S , Heupel , J , Weißflog , L , Kent , L , Freudenberg , F , Alttoa , A , Post , A , Herterich , S , Haavik , J , Halmøy , A , Fasmer , O B , Landaas , E T , Johansson , S , Cormand , B , Ribasés , M , Sánchez-Mora , C , Ramos-Quiroga , J A , Franke , B , Lesch , K-P & Reif , A 2015 , ' On the role of NOS1 ex1f-VNTR in ADHD – allelic, subgroup, and meta-analysis ' , American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics , vol. 168 , no. 6 , pp. 445-458 .
dc.identifier.otherPURE: 175205231
dc.identifier.otherPURE UUID: 41445572-673a-4485-8da6-3c108d6bee81
dc.identifier.otherScopus: 84939564726
dc.identifier.otherORCID: /0000-0002-5315-3399/work/60195350
dc.identifier.otherWOS: 000360052200006
dc.description.abstractAttention deficit/hyperactivity disorder (ADHD) is a heritable neurodevelopmental disorder featuring complex genetics with common and rare variants contributing to disease risk. In a high proportion of cases, ADHD does not remit during adolescence but persists into adulthood. Several studies suggest that NOS1, encoding nitric oxide synthase I, producing the gaseous neurotransmitter NO, is a candidate gene for (adult) ADHD. We here extended our analysis by increasing the original sample, adding two further samples from Norway and Spain, and conducted subgroup and co-morbidity analysis. Our previous finding held true in the extended sample, and also meta-analysis demonstrated an association of NOS1 ex1fVNTR short alleles with adult ADHD (aADHD). Association was restricted to females, as was the case in the discovery sample. Subgroup analysis on the single allele level suggested that the repeat allele caused the association. Regarding subgroups, we found that NOS1 was associated with the hyperactive/impulsive ADHD subtype, but not to pure inattention. In terms of comorbidity, major depression, anxiety disorders, cluster C personality disorders and migraine were associated with short repeats, in particular the repeat allele. Also, short allele carriers had significantly lower IQ. Finally, we again demonstrated an influence of the repeat on gene expression in human post-mortem brain samples. These data validate the role of NOS-I in hyperactive/impulsive phenotypes and call for further studies into the neurobiological underpinnings of this association.
dc.relation.ispartofAmerican Journal of Medical Genetics. Part B, Neuropsychiatric Geneticsen
dc.rightsCopyright 2015 Wiley Periodicals, Inc. This is the peer reviewed version of the following article: Weber H, Kittel-Schneider S, Heupel J, Weißflog L, Kent L, Freudenberg F, Alttoa A, Post A, Herterich S, Haavik J, Halmøy A, Fasmer OB, Landaas ET, Johansson S, Cormand B, Ribasés M, Sánchez-Mora C, Ramos-Quiroga JA, Franke B, Lesch K-P, Reif A. 2015. On the role of NOS1 ex1f-VNTR in ADHD—allelic, subgroup, and meta-analysis. Am J Med Genet Part B 9999:1–14, which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.en
dc.subjectNitric oxideen
dc.subjectAdult ADHDen
dc.subjectR Medicineen
dc.subjectSDG 3 - Good Health and Well-beingen
dc.titleOn the role of NOS1 ex1f-VNTR in ADHD – allelic, subgroup, and meta-analysisen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Medicineen
dc.contributor.institutionUniversity of St Andrews. Institute of Behavioural and Neural Sciencesen
dc.description.statusPeer revieweden

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