Vanishing white matter disease with mutations in EIF2B5 gene

Area of Science:

• Pediatric Neurology
• Neurogenetics
• Molecular Medicine

Background:

• Vanishing white matter disease (VWMD) is a severe inherited leukoencephalopathy.
• It typically presents in early childhood with progressive neurological decline.
• VWMD is caused by mutations in genes encoding subunits of the eukaryotic initiation factor 2B (eIF2B).

Observation:

• An 18-month-old female presented with sudden loss of attained milestones following a febrile illness.
• Brain MRI revealed extensive white matter rarefaction and cystic degeneration, characteristic of VWMD.
• The patient exhibited a febrile illness preceding the neurodevelopmental regression.

Findings:

• Genetic analysis identified compound heterozygous mutations in the EIF2B5 gene.
• These mutations confirmed the diagnosis of vanishing white matter disease.
• The specific mutations found were novel or previously uncharacterized.

Implications:

• This case highlights the importance of early recognition of VWMD based on clinical presentation and neuroimaging.
• Genetic confirmation using EIF2B5 gene analysis is crucial for accurate diagnosis and genetic counseling.
• Understanding genotype-phenotype correlations in VWMD can aid in predicting disease progression and potential therapeutic targets.