Cited by 113Advanced Neuroimaging Techniques and ApplicationsGenomic variations and chromosomal abnormalitiesGenetics and Neurodevelopmental Disorders

Aberrant white matter microstructure in children with 16p11.2 deletions

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Owen, Julia P., Chang, Yi Shin, Pojman, Nicholas J., Bukshpun, Polina, Wakahiro, Mari L.J., Marco, Elysa J., Berman, Jeffrey I., Spiro, John E. +6 more·2014·The Journal of Neuroscience

Abstract

Copy number variants (CNVs) of the chromosomal locus 16p11.2, consisting of either deletions or duplications, have been implicated in autism, schizophrenia, epilepsy, and other neuropsychiatric disorders. Since abnormal white matter microstructure can be seen in these more broadly defined clinical disorders, we used diffusion magnetic resonance imaging and tract-based spatial statistics to investigate white matter microstructural integrity in human children with 16p11.2 deletions. We show that deletion carriers, compared with typically developing matched controls, have increased axial diffusivity (AD) in many major central white matter tracts, including the anterior corpus callosum as well as bilateral internal and external capsules. Higher AD correlated with lower nonverbal IQ in the deletion carriers, but not controls. Increases in fractional anisotropy and mean diffusivity were also found in some of the same tracts with elevated AD. Closer examination with neurite orientation dispersion and density imaging revealed that fiber orientation dispersion was decreased in some central white matter tracts. Notably, these alterations of white matter are unlike microstructural differences reported for any other neurodevelopmental disorders, including autism spectrum disorders that have phenotypic overlap with the deletion carriers. These findings suggest that deletion of the 16p11.2 locus is associated with a unique widespread pattern of aberrant white matter microstructure that may underlie the impaired cognition characteristic of this CNV.

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Authors
Owen, J. P., Chang, Y. S., Pojman, N. J., Bukshpun, P., Wakahiro, M. L. J., Marco, E. J., Berman, J. I., Spiro, J. E., Chung, W. K., Buckner, R. L., Roberts, T. P. L., Nagarajan, S. S., Sherr, E. H., & Mukherjee, P.
Affiliations
  • Children's Hospital of Philadelphia (US)
  • University of California, San Francisco (US)
  • Simons Foundation (US)
  • Columbia University Irving Medical Center (US)
  • Harvard University (US)
Venue
The Journal of Neuroscience
Published
2014-04-30
Volume
34
Issue
18
Pages
6214-6223
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2049115342
Cited by
113
References
34
Citations by year
2025: 5 · 2024: 6 · 2023: 5 · 2022: 3 · 2021: 5 · 2020: 8 · 2019: 11 · 2018: 41 · 2017: 7 · 2016: 9 · 2015: 9 · 2014: 4
FWCI
7.56
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by-nc-sa)
Funders
Simons Foundation Autism Research Initiative
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
16p11.2 deletion, copy number variation, white matter microstructure, axial diffusivity, fractional anisotropy, corpus callosum, internal capsule, external capsule, nonverbal intelligence, neurodevelopmental disorders, children
MeSH terms
Adolescent, Autistic Disorder, Biophysics, Brain, Child, Chromosome Deletion, Chromosomes, Human, Pair 16, Cognition Disorders, Female, Humans, Image Processing, Computer-Assisted, Male, Intellectual Disability, Models, Neurological, Nerve Fibers, Myelinated, Statistics as Topic, Case-Control Studies, Anisotropy, Chromosome Disorders, Diffusion Magnetic Resonance Imaging, Leukoencephalopathies

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