ArticlePsychological medicine2023
Synergistic effects of childhood adversity and polygenic risk in first-episode psychosis: the EU-GEI study.
Article in Psychological medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.
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Who cites it
11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 23 citations in OpenAlex.
- Cumulative exposure to childhood adversity and risk of adult psychosis: a dose-response meta-analysis.Psychological medicine · 2025Pooled it
- Schizophrenia Polygenic Risk and Experiences of Childhood Adversity: A Systematic Review and Meta-analysis.Schizophrenia bulletin · 2022Pooled it
- Elevated Copper Level in Schizophrenia Results in Neurotransmitter and Cognitive Alteration.Biological trace element research · 2026Article
- Childhood Adversities and Psychosis Across Populations: Insights From the 6-Country EU-GEI Study.Schizophrenia bulletin · 2026Article
- Joint effects of childhood adversity and genetic risk for psychosis on psychopathology in the UK Biobank.Psychological medicine · 2026Article
- Associations of polygenic risk score, environmental factors, and their interactions with the risk of schizophrenia spectrum disorders.Psychological medicine · 2025Article
- The effect of polygenic risk score and childhood adversity on transdiagnostic symptom dimensions at first-episode psychosis: evidence for an affective pathway to psychosis.Translational psychiatry · 2024Article
- Ethnic inequalities in community rehabilitation use and psychiatric hospitalizations among people with chronic psychotic disorder.Social psychiatry and psychiatric epidemiology · 2024Article
- Prenatal infection and adolescent social adversity affect microglia, synaptic density, and behavior in male rats.Neurobiology of stress · 2023Article
- Child maltreatment, migration and risk of first-episode psychosis: results from the multinational EU-GEI study.Psychological medicine · 2023Article
- Time of exposure to social defeat stress during childhood and adolescence and redox dysregulation on long-lasting behavioral changes, a translational study.Translational psychiatry · 2022Article
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Authors and funding
40 authors at 20 institutions in 10 countries.
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Abstract
backgroundA history of childhood adversity is associated with psychotic disorder, with an increase in risk according to the number of exposures. However, it is not known why only some exposed individuals go on to develop psychosis. One possibility is pre-existing polygenic vulnerability. Here, we investigated, in the largest sample of first-episode psychosis (FEP) cases to date, whether childhood adversity and high polygenic risk scores for schizophrenia (SZ-PRS) combine synergistically to increase the risk of psychosis, over and above the effect of each alone.
methodsWe assigned a schizophrenia-polygenic risk score (SZ-PRS), calculated from the Psychiatric Genomics Consortium (PGC2), to all participants in a sample of 384 FEP patients and 690 controls from the case-control component of the EU-GEI study. Only participants of European ancestry were included in the study. A history of childhood adversity was collected using the Childhood Trauma Questionnaire (CTQ). Synergistic effects were estimated using the interaction contrast ratio (ICR) [odds ratio (OR)
resultsThere was some evidence that the combined effect of childhood adversities and polygenic risk was greater than the sum of each alone, as indicated by an ICR greater than zero [i.e. ICR 1.28, 95% confidence interval (CI) -1.29 to 3.85]. Examining subtypes of childhood adversities, the strongest synergetic effect was observed for physical abuse (ICR 6.25, 95% CI -6.25 to 20.88).
conclusionsOur findings suggest possible synergistic effects of genetic liability and childhood adversity experiences in the onset of FEP, but larger samples are needed to increase precision of estimates.
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