We investigated the presence of gray matter (GM) and white matter (GM) structural modifications in a homogeneous group of genetically defined CMT1A patients, by means of VBM and TBSS analyses, respectively. We found increased GM volume in CMT1A patients compared to HC encompassing the right paravermian portions of the cerebellar lobules III, IV and V, showing an inverse correlation with electrophysiological measures. These structural changes may reflect compensatory mechanisms in response to CMT1A peripheral nerve pathology, providing new insights into the comprehension of CNS physiopathology and its role in the development of clinical disability in this condition.
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