RT Journal Article SR 00 ID 10.1016/j.schres.2024.12.005 A1 Brunner, Gina A1 Gajwani, Ruchika A1 Gross, Joachim A1 Gumley, Andrew A1 Timmerman, Rosanne H. A1 Taylor, Rebecca A1 Krishnadas, Rajeev A1 Lawrie, Stephen M. A1 Schwannauer, Matthias A1 Schultze-Lutter, Frauke A1 Uhlhaas, Peter A1 Fracasso, Alessio T1 Choroid plexus morphology in schizophrenia and early-stage psychosis: a cross-sectional study JF Schizophrenia Research YR 2025 FD 2025-01 VO 275 SP 107 OP 114 AB Background: The choroid plexus is an important structure within the ventricular system. Schizophrenia has been associated with morphological changes to the choroid plexus but the presence and extent of alterations at different illness stages is unclear. Methods: We examined choroid plexus volumes in participants at clinical high-risk for psychosis (N = 110), participants with first-episode psychosis (N = 37), participants with schizophrenia (N = 28), clinical (N = 38) and non-clinical controls (N = 75). Automated segmentation (Gaussian mixture model) was used to estimate choroid plexus volumes from T1 magnetic resonance (MR) images. We then conducted a linear model and Bayes factor analysis to investigate group differences. In addition, the relationship between choroid plexus volumes and clinical characteristics was assessed. Results: Schizophrenia patients were characterized by increased choroid plexus and ventricular volume while first-episode psychosis and clinical high-risk for psychosis participants showed no differences in choroid plexus volumes. However, choroid plexus volumes in schizophrenia patients did not significantly differ from controls when controlling for ventricular volume. Finally, choroid plexus volumes were not associated with clinical characteristics in the clinical high-risk group. Conclusion: Our findings suggest that morphological alterations are not specific to the choroid plexus in schizophrenia and early-stage psychosis. Previously reported choroid plexus abnormalities in schizophrenia patients could be explained by changes in ventricular volume. NO The study was supported by the Medical Research Council (MR/L011689/1). This publication was supported by the University of Glasgow's Lord Kelvin/Adam Smith (LKAS) PhD Scholarship. PB Elsevier SN 0920-9964 LK https://eprints.gla.ac.uk/343467/