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. 2021 Jun 25;59(6):549–553. doi: 10.1136/jmedgenet-2021-107769

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© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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(A) Axial and sagittal T2-weighted images of subject III.1 from family 1 at the age of 3 months revealing agenesis of the corpus callosum. (B) Axial and sagittal T1 images from subject III.6 from family 2 with mainly frontal brain atrophy, dilated subarachnoid spaced, widened perisylvian fissure and mildly dilated lateral ventricles.