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Personality changes during adolescence predict young adult psychosis proneness and mediate gene-environment interplays of schizophrenia risk

BackgroundPsychotic symptoms in adolescence are associated with social adversity and genetic risk for schizophrenia. This gene-environment interplay may be mediated by personality, which also develops during adolescence. We hypothesized that (i) personality development predicts later Psychosis Prone...

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Main Authors: Antonucci, Linda A. (Author) , Raio, Alessandra (Author) , Kikidis, Gianluca Christos (Author) , Bertolino, Alessandro (Author) , Rampino, Antonio (Author) , Banaschewski, Tobias (Author) , Bokde, Arun L. W. (Author) , Desrivières, Sylvane (Author) , Flor, Herta (Author) , Grigis, Antoine (Author) , Garavan, Hugh (Author) , Heinz, Andreas (Author) , Martinot, Jean-Luc (Author) , Martinot, Marie-Laure Paillère (Author) , Artiges, Eric (Author) , Nees, Frauke (Author) , Orfanos, Dimitri Papadopoulos (Author) , Poustka, Luise (Author) , Hohmann, Sarah (Author) , Fröhner, Juliane (Author) , Smolka, Michael (Author) , Vaidya, Nilakshi (Author) , Walter, Henrik (Author) , Whelan, Robert (Author) , Schumann, Gunter (Author) , Hartman, Catharina A. (Author) , Pergola, Giulio (Author)
Format: Article (Journal)
Language:English
Published: 28 October 2024
In: Psychological medicine
Year: 2024, Volume: 54, Issue: 14, Pages: 3838-3848
ISSN:1469-8978
DOI:10.1017/S0033291724002198
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1017/S0033291724002198
Verlag, kostenfrei, Volltext: https://www.cambridge.org/core/journals/psychological-medicine/article/personality-changes-during-adolescence-predict-young-adult-psychosis-proneness-and-mediate-geneenvironment-interplays-of-schizophrenia-risk/8C2A0D82F4C0D7905EE8DA5E0FD6C2D8
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Author Notes:Linda A. Antonucci, Alessandra Raio, Gianluca Christos Kikidis, Alessandro Bertolino, Antonio Rampino, Tobias Banaschewski, Arun L. W. Bokde, Sylvane Desrivières, Herta Flor, Antoine Grigis, Hugh Garavan, Andreas Heinz, Jean-Luc Martinot, Marie-Laure Paillère Martinot, Eric Artiges, Frauke Nees, Dimitri Papadopoulos Orfanos, Luise Poustka, Sarah Hohmann, Juliane H. Fröhner, Michael N. Smolka, Nilakshi Vaidya, Henrik Walter, Robert Whelan, Gunter Schumann, Catharina A. Hartman, Giulio Pergola and the IMAGEN Consortium
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Summary:BackgroundPsychotic symptoms in adolescence are associated with social adversity and genetic risk for schizophrenia. This gene-environment interplay may be mediated by personality, which also develops during adolescence. We hypothesized that (i) personality development predicts later Psychosis Proneness Signs (PPS), and (ii) personality traits mediate the association between genetic risk for schizophrenia, social adversities, and psychosis.MethodsA total of 784 individuals were selected within the IMAGEN cohort (Discovery Sample-DS: 526; Validation Sample-VS: 258); personality was assessed at baseline (13-15 years), follow-up-1 (FU1, 16-17 years), and FU2 (18-20 years). Latent growth curve models served to compute coefficients of individual change across 14 personality variables. A support vector machine algorithm employed these coefficients to predict PPS at FU3 (21-24 years). We computed mediation analyses, including personality-based predictions and self-reported bullying victimization as serial mediators along the pathway between polygenic risk score (PRS) for schizophrenia and FU3 PPS. We replicated the main findings also on 1132 adolescents recruited within the TRAILS cohort.ResultsGrowth scores in neuroticism and openness predicted PPS with 65.6% balanced accuracy in the DS, and 69.5% in the VS Mediations revealed a significant positive direct effect of PRS on PPS (confidence interval [CI] 0.01-0.15), and an indirect effect, serially mediated by personality-based predictions and victimization (CI 0.006-0.01), replicated in the TRAILS cohort (CI 0.0004-0.004).ConclusionsAdolescent personality changes may predate future experiences associated with psychosis susceptibility. PPS personality-based predictions mediate the relationship between PRS and victimization toward adult PPS, suggesting that gene-environment correlations proposed for psychosis are partly mediated by personality.
Item Description:Gesehen am 14.04.2025
Physical Description:Online Resource
ISSN:1469-8978
DOI:10.1017/S0033291724002198

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