title: Developmental changes in multivariate neuroanatomical patterns that predict risk for psychosis in 22q11.2 deletion syndrome.
abstract: The primary objective of the current prospective study was to examine developmental patterns of voxel-by-voxel gray and white matter volumes (GMV, WMV, respectively) that would predict psychosis in adolescents with 22q11.2 deletion syndrome (22q11.2DS), the most common known genetic risk factor for schizophrenia. We performed a longitudinal voxel-based morphometry analysis using structural T1 MRI scans from 19 individuals with 22q11.2DS and 18 typically developing individuals. In 22q11.2DS, univariate analysis showed that greater reduction in left dorsal prefrontal cortical (dPFC) GMV over time predicted greater psychotic symptoms at Time2. This dPFC region also showed significantly reduced volumes in 22q11.2DS compared to typically developing individuals at Time1 and 2, greater reduction over time in 22q11.2DS COMT(Met) compared to COMT(Val), and greater reduction in those with greater decline in verbal IQ over time. Leave-one-out Multivariate pattern analysis results (MVPA) on the other hand, showed that patterns of GM and WM morphometric changes over time in regions including but not limited to the dPFC predicted risk for psychotic symptoms (94.7-100% accuracy) significantly better than using univariate analysis (63.1%). Additional predictive brain regions included medial PFC and dorsal cingulum. This longitudinal prospective study shows novel evidence of morphometric spatial patterns predicting the development of psychotic symptoms in 22q11.2DS, and further elucidates the abnormal maturational processes in 22q11.2DS. The use of neuroimaging using MVPA may hold promise to predict outcome in a variety of neuropsychiatric disorders.
authors.affiliation: The Child Psychiatry Department, The Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.
authors.forename: Doron
authors.initials: D
authors.lastname: Gothelf
authors.forename: Fumiko
authors.initials: F
authors.lastname: Hoeft
authors.forename: Takefumi
authors.initials: T
authors.lastname: Ueno
authors.forename: Lisa
authors.initials: L
authors.lastname: Sugiura
authors.forename: Agatha D
authors.initials: AD
authors.lastname: Lee
authors.forename: Paul
authors.initials: P
authors.lastname: Thompson
authors.forename: Allan L
authors.initials: AL
authors.lastname: Reiss
mesh_terms: D000293:Adolescent; D000704:Analysis of Variance; D001921:Brain / Q000473:pathology*; D001931:Brain Mapping; D002394:Catechol O-Methyltransferase / Q000235:genetics; D002648:Child; D002872:Chromosome Deletion; D002892:Chromosomes, Human, Pair 22 / Q000235:genetics*; D003072:Cognition Disorders / Q000175:diagnosis / Q000209:etiology; D002658:Developmental Disabilities / Q000235:genetics*; D005260:Female; D007839:Functional Laterality; D055106:Genome-Wide Association Study / Q000379:methods; D005838:Genotype; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009483:Neuropsychological Tests; D011237:Predictive Value of Tests; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000150:complications / Q000235:genetics* / Q000473:pathology*; D012307:Risk Factors
chemical_list: D002394:Catechol O-Methyltransferase
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