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Link to original content: http://pubmed.ncbi.nlm.nih.gov/37537281/
Subcortical volumetric alterations in four major psychiatric disorders: a mega-analysis study of 5604 subjects and a volumetric data-driven approach for classification - PubMed Skip to main page content
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. 2023 Dec;28(12):5206-5216.
doi: 10.1038/s41380-023-02141-9. Epub 2023 Aug 4.

Subcortical volumetric alterations in four major psychiatric disorders: a mega-analysis study of 5604 subjects and a volumetric data-driven approach for classification

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Subcortical volumetric alterations in four major psychiatric disorders: a mega-analysis study of 5604 subjects and a volumetric data-driven approach for classification

Naohiro Okada et al. Mol Psychiatry. 2023 Dec.

Abstract

Differential diagnosis is sometimes difficult in practical psychiatric settings, in terms of using the current diagnostic system based on presenting symptoms and signs. The creation of a novel diagnostic system using objective biomarkers is expected to take place. Neuroimaging studies and others reported that subcortical brain structures are the hubs for various psycho-behavioral functions, while there are so far no neuroimaging data-driven clinical criteria overcoming limitations of the current diagnostic system, which would reflect cognitive/social functioning. Prior to the main analysis, we conducted a large-scale multisite study of subcortical volumetric and lateralization alterations in schizophrenia, bipolar disorder, major depressive disorder, and autism spectrum disorder using T1-weighted images of 5604 subjects (3078 controls and 2526 patients). We demonstrated larger lateral ventricles volume in schizophrenia, bipolar disorder, and major depressive disorder, smaller hippocampus volume in schizophrenia and bipolar disorder, and schizophrenia-specific smaller amygdala, thalamus, and accumbens volumes and larger caudate, putamen, and pallidum volumes. In addition, we observed a leftward alteration of lateralization for pallidum volume specifically in schizophrenia. Moreover, as our main objective, we clustered the 5,604 subjects based on subcortical volumes, and explored whether data-driven clustering results can explain cognitive/social functioning in the subcohorts. We showed a four-biotype classification, namely extremely (Brain Biotype [BB] 1) and moderately smaller limbic regions (BB2), larger basal ganglia (BB3), and normal volumes (BB4), being associated with cognitive/social functioning. Specifically, BB1 and BB2-3 were associated with severe and mild cognitive/social impairment, respectively, while BB4 was characterized by normal cognitive/social functioning. Our results may lead to the future creation of novel biological data-driven psychiatric diagnostic criteria, which may be expected to be useful for prediction or therapeutic selection.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Fig. 1
Fig. 1
Meta-analytic overall effect sizes for subcortical regional volume differences between HCs and subjects with SZ, BP, MDD, and ASD. A positive effect size indicates that subjects with psychiatric disorders had larger volumes than HCs. *uncorrected p < 0.05 and **Bonferroni-corrected p < 0.05. ICV intracranial volume, L left, R right.
Fig. 2
Fig. 2. Merged results from the ENIGMA and COCORO consortiums for subcortical regional volume differences (effect sizes) between HCs and subjects with SZ, BP, MDD, and ASD.
a Results for SZ. b Results for BP. c Results for MDD. d Results for ASD. * represents uncorrected p < 0.05, ** represents Bonferroni-corrected p < 0.05, and *** represents false positive rate corrected p < 0.05. L left, R right, ICV intracranial volume.
Fig. 3
Fig. 3
Meta-analytic overall effect sizes for differences in laterality indices for subcortical regional volume between HCs and subjects with SZ, BP, MDD, and ASD. A positive effect size indicates that subjects with psychiatric disorders had a leftward alteration of lateralization compared to HCs. *uncorrected p < 0.05 and **Bonferroni-corrected p < 0.05.
Fig. 4
Fig. 4. MRI data-driven clustering results and their association with diagnosis and cognitive/social functioning.
a Mean normalized volumes of each subcortical region in each cluster are shown. An italic underlined number and a bold underlined number represent the minimum and maximum averaged normalized volume of each subcortical region across clusters, respectively. Moreover, percentages of each cluster in each diagnostic group are demonstrated. An italic underlined number and a bold underlined number represent a significantly lower and higher rate than expected, respectively. b Mean functioning scale scores in each cluster are displayed.
Fig. 5
Fig. 5. Four-biotype classification driven by subcortical regional volumes and its association with cognitive/social functioning.
a Mean normalized volumes are illustrated with a color scale. b The characteristics of each brain biotype are summarized.

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