Longitudinal changes in diffusion properties in white matter pathways of children with tuberous sclerosis complex

Area of Science:

• Neuroimaging
• Neurodevelopmental Disorders
• White Matter Biology

Background:

• Tuberous sclerosis complex (TSC) is a genetic disorder causing abnormal cell growth.
• White matter abnormalities in TSC are linked to neurocognitive deficits.
• Understanding white matter development predictors in TSC is crucial.

Purpose of the Study:

• To identify predictors of longitudinal changes in white matter diffusion properties in TSC patients.
• To investigate the impact of clinical variables on white matter development in TSC.

Main Methods:

• Diffusion MRI scans from 17 TSC patients (mean age 7.2 years) with at least two scans were analyzed.
• Regions of interest included the internal capsule/corona radiata, cingulum, and corpus callosum.
• Pearson's correlation and multiple linear regression analyzed changes in apparent diffusion coefficient and fractional anisotropy.

Main Results:

• Gender predicted changes in apparent diffusion coefficient and fractional anisotropy in multiple white matter tracts.
• Epilepsy predicted changes in apparent diffusion coefficient in the left internal capsule.
• Autism spectrum disorder did not predict diffusion changes in any studied pathways.

Conclusions:

• Clinical factors like gender and epilepsy significantly impact white matter pathway development in TSC.
• These findings are important for counseling TSC patients.
• Consideration of these variables is recommended for future TSC imaging research.