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Genetic risk for schizophrenia and autism, social impairment and developmental pathways to psychosis.


ABSTRACT: While psychotic experiences (PEs) are assumed to represent psychosis liability, general population studies have not been able to establish significant associations between polygenic risk scores (PRS) and PEs. Previous work suggests that PEs may only represent significant risk when accompanied by social impairment. Leveraging data from the large longitudinal IMAGEN cohort, including 2096 14-year old adolescents that were followed-up to age 18, we tested whether the association between polygenic risk and PEs is mediated by (increasing) impairments in social functioning and social cognitive processes. Using structural equation modeling (SEM) for the subset of participants (n?=?643) with complete baseline and follow-up data, we examined pathways to PEs. We found that high polygenic risk for schizophrenia (p?=?0.014), reduced brain activity to emotional stimuli (p?=?0.009) and social impairments in late adolescence (p?

SUBMITTER: Velthorst E 

PROVIDER: S-EPMC6158250 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Genetic risk for schizophrenia and autism, social impairment and developmental pathways to psychosis.

Velthorst Eva E   Froudist-Walsh Sean S   Stahl Eli E   Ruderfer Douglas D   Ivanov Ilyan I   Buxbaum Joseph J   Banaschewski Tobias T   Bokde Arun L W ALW   Dipl-Psych Uli Bromberg UB   Büchel Christian C   Quinlan Erin Burke EB   Desrivières Sylvane S   Flor Herta H   Frouin Vincent V   Garavan Hugh H   Gowland Penny P   Heinz Andreas A   Ittermann Bernd B   Martinot Marie-Laure Paillère MP   Artiges Eric E   Nees Frauke F   Orfanos Dimitri Papadopoulos DP   Paus Tomáš T   Poustka Luise L   Hohmann Sarah S   Fröhner Juliane H JH   Smolka Michael N MN   Walter Henrik H   Whelan Robert R   Schumann Gunter G   Reichenberg Abraham A  

Translational psychiatry 20180926 1


While psychotic experiences (PEs) are assumed to represent psychosis liability, general population studies have not been able to establish significant associations between polygenic risk scores (PRS) and PEs. Previous work suggests that PEs may only represent significant risk when accompanied by social impairment. Leveraging data from the large longitudinal IMAGEN cohort, including 2096 14-year old adolescents that were followed-up to age 18, we tested whether the association between polygenic r  ...[more]

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