Autism traits in individuals with agenesis of the corpus callosum

Date: May 2013
Authors: Yolanda C. Lau, Leighton B. N. Hinkley, Polina Bukshpun, Zoe A. Strominger, Mari L. J. Wakahiro, Simon Baron-Cohen, Carrie Allison, Bonnie Auyeung, Rita J. Jeremy, Srikantan S. Nagarajan, Elliott H. Sherr, Elysa J. Marco

Abstract:

Objective:

Autism spectrum disorders (ASD) have numerous etiologies, including structural brain malformations such as agenesis of the corpus callosum (AgCC). We sought to directly measure the occurrence of autism traits in a cohort of individuals with AgCC and to investigate the neural underpinnings of this association.

Methods:

We screened a large AgCC cohort (n = 106) with the Autism Spectrum Quotient (AQ) and found that 45% of children, 35% of adolescents, and 18% of adults exceeded the predetermined autism-screening cut-off.

Results:

Interestingly, performance on the AQ’s imagination domain was inversely correlated with magnetoencephalography measures of resting-state functional connectivity in the right superior temporal gyrus.

Conclusion:

Individuals with AgCC should be screened for ASD and disorders of the corpus callosum should be considered in autism diagnostic evaluations as well.

Conclusion:

Agenesis of the corpus callosum, autism spectrum disorders, Autism Spectrum Quotient, functional connectivity, magnetoencephalography, superior temporal gyrus