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Meta-Analysis
. 2022 Jan;43(1):373-384.
doi: 10.1002/hbm.25212. Epub 2020 Oct 5.

Intracranial and subcortical volumes in adolescents with early-onset psychosis: A multisite mega-analysis from the ENIGMA consortium

Affiliations
Meta-Analysis

Intracranial and subcortical volumes in adolescents with early-onset psychosis: A multisite mega-analysis from the ENIGMA consortium

Tiril P Gurholt et al. Hum Brain Mapp. 2022 Jan.

Abstract

Early-onset psychosis disorders are serious mental disorders arising before the age of 18 years. Here, we investigate the largest neuroimaging dataset, to date, of patients with early-onset psychosis and healthy controls for differences in intracranial and subcortical brain volumes. The sample included 263 patients with early-onset psychosis (mean age: 16.4 ± 1.4 years, mean illness duration: 1.5 ± 1.4 years, 39.2% female) and 359 healthy controls (mean age: 15.9 ± 1.7 years, 45.4% female) with magnetic resonance imaging data, pooled from 11 clinical cohorts. Patients were diagnosed with early-onset schizophrenia (n = 183), affective psychosis (n = 39), or other psychotic disorders (n = 41). We used linear mixed-effects models to investigate differences in intracranial and subcortical volumes across the patient sample, diagnostic subgroup and antipsychotic medication, relative to controls. We observed significantly lower intracranial (Cohen's d = -0.39) and hippocampal (d = -0.25) volumes, and higher caudate (d = 0.25) and pallidum (d = 0.24) volumes in patients relative to controls. Intracranial volume was lower in both early-onset schizophrenia (d = -0.34) and affective psychosis (d = -0.42), and early-onset schizophrenia showed lower hippocampal (d = -0.24) and higher pallidum (d = 0.29) volumes. Patients who were currently treated with antipsychotic medication (n = 193) had significantly lower intracranial volume (d = -0.42). The findings demonstrate a similar pattern of brain alterations in early-onset psychosis as previously reported in adult psychosis, but with notably low intracranial volume. The low intracranial volume suggests disrupted neurodevelopment in adolescent early-onset psychosis.

Keywords: adolescence; antipsychotics; brain structure; early-onset; intracranial volume; psychosis spectrum.

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Conflict of interest statement

Celso Arango: has been a consultant to or has received honoraria or grants from Acadia, Angelini, Gedeon Richter, Janssen Cilag, Lundbeck, Otsuka, Roche, Sage, Servier, Shire, Schering Plough, Sumitomo Dainippon Pharma, Sunovion, and Takeda; Covadonga M. Díaz‐Caneja: has received honoraria from AbbVie, Sanofi, and Exeltis; Michael Berk: was supported by an unrestricted grant from AstraZeneca; Paul M. Thompson, Neda Jahanshad: MPI of a research grant from Biogen, Inc., for work unrelated to the contents of this manuscript. Ole A. Andreassen: has received speaker's honorarium from Lundbeck, and is a consultant to HealthLytix. Bradley J. MacIntosh: received a NARSAD Independent Investigator award from the Brain Behavior Research Foundation.

Figures

FIGURE 1
FIGURE 1
Regional brain volumes in early‐onset psychosis compared to healthy controls. Notes: Linear mixed‐effects models applied for diagnostic differences between patients with early‐onset psychosis and healthy controls (reference), adjusted for age, sex, and ICV (for subcortical structures) as fixed‐effects variables and scanner as a random‐effects variable. Error bars show pooled effect size ± standard error. Significant differences indicated by *
FIGURE 2
FIGURE 2
Regional brain volumes in early‐onset psychosis patient subgroups compared to healthy controls. Notes: Linear mixed‐effects models applied for diagnostic differences in patient subgroups (EOS/AFP/OTP) with controls (reference), adjusted for age, sex, and ICV (for subcortical structures) as fixed‐effects variables and scanner as a random‐effects variable. Error bars show mean effect size ± standard error. Significant differences indicated by *. AFP, affective psychosis; EOS, early‐onset schizophrenia; OTP, other psychoses
FIGURE 3
FIGURE 3
Regional brain volumes by current antipsychotic medication status in early‐onset psychosis compared to healthy controls. Notes: Linear mixed‐effects models investigating the effect of antipsychotic medication user/non‐user with controls (reference), adjusted for age, sex, and ICV (for subcortical structures) as fixed‐effects variables and scanner as a random‐effects variable. Error bars show mean effect size ± standard error. Significant differences indicated by *
FIGURE 4
FIGURE 4
Effect sizes observed in early‐onset psychosis compared to other neurodevelopmental disorders from prior ENIGMA publications. Notes: Figure compares the effect sizes that we observe in EOP with those from prior ENIGMA publications; In (a) meta‐analysis of adult schizophrenia (van Erp et al., 2016) and bipolar disorder (Hibar et al., 2016), and in (b) mega‐analyses of life‐span ADHD (Hoogman et al., 2017) and ASD (van Rooij et al., 2018). The age‐ranges and healthy control populations differs among the studies, and the ADHD study did not report on the lateral ventricles. ADHD, attention deficit hyperactivity disorder; ASD, autism spectrum disorder; BD, bipolar disorder; EOP, early‐onset psychosis; SZ, schizophrenia

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