Publication date: Aug 07, 2024
Schizophrenia (SCZ) is a clinically and genetically heterogeneous disorder that shares genetic factors with autism spectrum disorder (ASD) and attention-deficit hyperactivity disorder (ADHD). A genome-wide association study (GWAS) differentiating ADHD from ASD was performed recently. In this study, we investigated whether polygenic risk scores (PRSs) differentiating ASD from ADHD are associated with cognitive impairments and alterations in cortical structures in SCZ patients. Based on the GWAS data (9,315 ASD and 11,964 ADHD patients), PRSs differentiating ADHD from ASD (indicating a greater risk of ADHD and a lower risk of ASD) were calculated for SCZ patients (n = 168). Cognitive performance, including verbal comprehension (VC), perceptual organization (PO), working memory (WM), and processing speed (PS), was assessed using the WAIS-III (n = 145). The surface areas and cortical thicknesses of 34 bilateral brain regions were extracted using FreeSurfer (n = 126). We examined the associations of these PRSs with cognitive performance and cortical structures in SCZ patients. Among the four cognitive domains, a higher PRS, indicating a greater risk of ADHD, was associated with impaired WM in SCZ patients (beta=-0. 21, p = 0. 012). A lower PRS, indicating a greater risk of ASD, was associated with decreased surface areas of the left medial orbitofrontal (beta = 0. 21, p = 8. 29 cD7 10), left entorhinal (beta = 0. 21, p = 0. 025), left postcentral (beta = 0. 18, p = 7. 52 cD7 10), right fusiform (beta = 0. 17, p = 6. 64 cD7 10), and left fusiform cortices (beta = 0. 17, p = 7. 77 cD7 10) in SCZ patients. A higher PRS, indicating a greater risk of ADHD, was associated with decreased cortical thickness in the bilateral transverse temporal regions (left, beta=-0. 17, p = 0. 039; right, beta=-0. 17, p = 0. 045). Our study revealed a relationship between genetic factors that differentiate ADHD patients from ASD patients and both cortical structure and cognitive performance in SCZ patients. These findings suggest that the heterogeneity of SCZ might be partly derived from genetic factors related to neurodevelopmental and psychiatric disorders other than SCZ.
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Concepts | Keywords |
---|---|
Freesurfer | Attention-deficit hyperactivity disorder |
Genetic | Autism spectrum disorder |
Neurodevelopmental | Cortical structure |
Schizophrenia | Polygenic risk score |
Schizophrenia |
Semantics
Type | Source | Name |
---|---|---|
disease | MESH | autism spectrum disorder |
disease | MESH | Schizophrenia |
disease | MESH | ADHD |
disease | MESH | cognitive impairments |
disease | MESH | psychiatric disorders |
disease | MESH | delusions |
drug | DRUGBANK | Coenzyme M |
disease | MESH | neurodevelopmental disorders |
disease | MESH | impulsivity |
drug | DRUGBANK | Trestolone |
disease | MESH | etiology |
disease | MESH | abnormalities |
drug | DRUGBANK | Esomeprazole |
disease | MESH | autism |
disease | MESH | Asperger’s syndrome |
disease | MESH | mental retardation |
disease | MESH | liver diseases |
disease | MESH | cancer |
disease | MESH | cerebrovascular disease |
disease | MESH | epilepsy |
disease | MESH | seizures |
disease | MESH | Syndrome |
drug | DRUGBANK | Sodium lauryl sulfate |
drug | DRUGBANK | Chlorpromazine |
drug | DRUGBANK | Biperiden |
drug | DRUGBANK | Diazepam |
drug | DRUGBANK | Flunarizine |
disease | MESH | infarcts |
disease | MESH | hemorrhages |
disease | MESH | brain tumors |