Neuropsychological Functioning in Alexander Disease: A Case Series.

Area of Science:

• Neuroscience
• Genetics
• Pediatric Neurology

Background:

• Alexander disease is a rare, progressive leukodystrophy with limited data on neuropsychological outcomes.
• Understanding cognitive trajectories is crucial for managing this rare genetic disorder.

Observation:

• Two pediatric cases of Alexander disease (Type I and Type II) were evaluated longitudinally.
• Case 1 (Type I) exhibited progressive declines in intellectual function, visual-motor skills, and academic achievement.
• Case 2 (Type II) showed variable neurocognitive changes but maintained average word reading, spelling, and verbal memory.

Findings:

• Alexander disease can lead to variable degrees of cognitive decline.
• Type I Alexander disease, characterized by earlier onset and seizures, may be associated with more significant cognitive deterioration than Type II.
• Neuropsychological profiles can differ substantially between Alexander disease subtypes.

Implications:

• Longitudinal monitoring of cognitive and academic functioning is essential for individuals with Alexander disease.
• Tailored educational and therapeutic interventions should be based on individual developmental trajectories.
• Further research is needed to elucidate the specific factors influencing neuropsychological outcomes in Alexander disease.