Disrupted anatomic networks in the 22q11.2 deletion syndrome

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Abstract

The 22q11.2 deletion syndrome (22q11DS) is an uncommon genetic disorder with an increased risk of psychosis. Although the neural substrates of psychosis and schizophrenia are not well understood, aberrations in cortical networks represent intriguing potential mechanisms. Investigations of anatomic networks within 22q11DS are sparse. We investigated group differences in anatomic network structure in 48 individuals with 22q11DS and 370 typically developing controls by analyzing covariance patterns in cortical thickness among 68 regions of interest using graph theoretical models. Subjects with 22q11DS had less robust geographic organization relative to the control group, particularly in the occipital and parietal lobes. Multiple global graph theoretical statistics were decreased in 22q11DS. These results are consistent with prior studies demonstrating decreased connectivity in 22q11DS using other neuroimaging methodologies.

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Schmitt, J. E., Yi, J., Calkins, M. E., Ruparel, K., Roalf, D. R., Cassidy, A., … Gur, R. E. (2016). Disrupted anatomic networks in the 22q11.2 deletion syndrome. NeuroImage: Clinical, 12, 420–428. https://doi.org/10.1016/j.nicl.2016.08.020

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