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Jan Haavik

Researcher at University of Bergen

Publications -  281
Citations -  16526

Jan Haavik is an academic researcher from University of Bergen. The author has contributed to research in topics: Attention deficit hyperactivity disorder & Tyrosine hydroxylase. The author has an hindex of 58, co-authored 257 publications receiving 12595 citations. Previous affiliations of Jan Haavik include Mayo Clinic & Erasmus University Medical Center.

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Discovery of the first genome-wide significant risk loci for attention deficit/hyperactivity disorder

Ditte Demontis, +126 more
- 01 Jan 2019 - 
TL;DR: A genome-wide association meta-analysis of 20,183 individuals diagnosed with ADHD and 35,191 controls identifies variants surpassing genome- wide significance in 12 independent loci and implicates neurodevelopmental pathways and conserved regions of the genome as being involved in underlying ADHD biology.
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Analysis of shared heritability in common disorders of the brain

Verneri Anttila, +720 more
- 22 Jun 2018 - 
TL;DR: It is demonstrated that, in the general population, the personality trait neuroticism is significantly correlated with almost every psychiatric disorder and migraine, and it is shown that both psychiatric and neurological disorders have robust correlations with cognitive and personality measures.
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Genomic Relationships, Novel Loci, and Pleiotropic Mechanisms across Eight Psychiatric Disorders

Phil Lee, +606 more
- 12 Dec 2019 - 
TL;DR: Genetic influences on psychiatric disorders transcend diagnostic boundaries, suggesting substantial pleiotropy of contributing loci within genes that show heightened expression in the brain throughout the lifespan, beginning prenatally in the second trimester, and play prominent roles in neurodevelopmental processes.
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Subcortical brain volume differences in participants with attention deficit hyperactivity disorder in children and adults: a cross-sectional mega-analysis

Martine Hoogman, +92 more
TL;DR: Lifespan analyses suggest that, in the absence of well powered longitudinal studies, the ENIGMA cross-sectional sample across six decades of ages provides a means to generate hypotheses about lifespan trajectories in brain phenotypes.
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HHS Public Access

Martine Hoogman, +247 more