TY  - JOUR
A1  - Grimm, Oliver
A1  - Weber, Heike
A1  - Kittel-Schneider, Sarah
A1  - Kranz, Thorsten M.
A1  - Jacob, Christian P.
A1  - Lesch, Klaus-Peter
A1  - Reif, Andreas
T1  - Impulsivity and Venturesomeness in an Adult ADHD Sample: Relation to Personality, Comorbidity, and Polygenic Risk
JF  - Frontiers in Psychiatry
N2  - While impulsivity is a basic feature of attention-deficit/hyperactivity disorder (ADHD), no study explored the effect of different components of the Impulsiveness (Imp) and Venturesomeness (Vent) scale (IV7) on psychiatric comorbidities and an ADHD polygenic risk score (PRS). We used the IV7 self-report scale in an adult ADHD sample of 903 patients, 70% suffering from additional comorbid disorders, and in a subsample of 435 genotyped patients. Venturesomeness, unlike immediate Impulsivity, is not specific to ADHD. We consequently analyzed the influence of Imp and Vent also in the context of a PRS on psychiatric comorbidities of ADHD. Vent shows a distinctly different distribution of comorbidities, e.g., less anxiety and depression. PRS showed no effect on different ADHD comorbidities, but correlated with childhood hyperactivity. In a complementary analysis using principal component analysis with Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition ADHD criteria, revised NEO Personality Inventory, Imp, Vent, and PRS, we identified three ADHD subtypes. These are an impulsive–neurotic type, an adventurous–hyperactive type with a stronger genetic component, and an anxious–inattentive type. Our study thus suggests the importance of adventurousness and the differential consideration of impulsivity in ADHD. The genetic risk is distributed differently between these subtypes, which underlines the importance of clinically motivated subtyping. Impulsivity subtyping might give insights into the organization of comorbid disorders in ADHD and different genetic background.
KW  - impulsivity
KW  - ADHD
KW  - polygenic risk score
KW  - venturesomeness
KW  - substance abuse disorder
KW  - attention
KW  - hyperactivity
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-219751
SN  - 1664-0640
VL  - 11
ER  - 
TY  - JOUR
A1  - Brevik, Erlend J
A1  - van Donkelaar, Marjolein M. J.
A1  - Weber, Heike
A1  - Sánchez-Mora, Cristina
A1  - Jacob, Christian
A1  - Rivero, Olga
A1  - Kittel-Schneider, Sarah
A1  - Garcia-martinez, Iris
A1  - Aebi, Marcel
A1  - van Hulzen, Kimm
A1  - Cormand, Bru
A1  - Ramos-Quiroga, Josep A
A1  - Lesch, Klaus-Peter
A1  - Reif, Andreas
A1  - Ribases, Marta
A1  - Franke, Barbara
A1  - Posserud, Maj-Britt
A1  - Johansson, Stefan
A1  - Lundervold, Astri J.
A1  - Haavik, Jan
A1  - Zayats, Tetyana
T1  - Genome-wide analyses of aggressiveness in attention-deficit hyperactivity disorder
JF  - American Journal of Medical Genetics Part B-Neuropsychiatric Genetics
N2  - Aggressiveness is a behavioral trait that has the potential to be harmful to individuals and society. With an estimated heritability of about 40%, genetics is important in its development. We performed an exploratory genome-wide association (GWA) analysis of childhood aggressiveness in attention deficit hyperactivity disorder (ADHD) to gain insight into the underlying biological processes associated with this trait. Our primary sample consisted of 1,060 adult ADHD patients (aADHD). To further explore the genetic architecture of childhood aggressiveness, we performed enrichment analyses of suggestive genome-wide associations observed in aADHD among GWA signals of dimensions of oppositionality (defiant/vindictive and irritable dimensions) in childhood ADHD (cADHD). No single polymorphism reached genome-wide significance (P<5.00E-08). The strongest signal in aADHD was observed at rs10826548, within a long noncoding RNA gene (beta = -1.66, standard error (SE) = 0.34, P = 1.07E-06), closely followed by rs35974940 in the neurotrimin gene (beta = 3.23, SE = 0.67, P = 1.26E-06). The top GWA SNPs observed in aADHD showed significant enrichment of signals from both the defiant/vindictive dimension (Fisher's P-value = 2.28E-06) and the irritable dimension in cADHD (Fisher's P-value = 0.0061). In sum, our results identify a number of biologically interesting markers possibly underlying childhood aggressiveness and provide targets for further genetic exploration of aggressiveness across psychiatric disorders.
KW  - Large multicenter ADHD
KW  - Antisocial behavior
KW  - Diagnostic approach
KW  - Rating scale
KW  - Gene
KW  - Deficit/hyperactivity disorder
KW  - Susceptibility loci
KW  - Conduct disorder
KW  - Association
KW  - Adult
KW  - ADHD
KW  - Aggression
KW  - GWAS
Y1  - 2016
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-188116
VL  - 171B
IS  - 5
ER  -