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[Muscle-eye-brain disease. Presentation of one case with genetic study]
I Pascual-Castroviejo1, S I Pascual-Pascual, M Gutiérrez-Molina
1Servicio de Neurología Pediátrica, Hospital Universitario La Paz, Madrid, Spain. IPCASTROVIEJO@terra.es
This study details a rare muscle-eye-brain (MEB) disease case, confirming typical clinical and genetic features in a patient over 21 years. Genetic analysis identified specific POMGnT1 mutations, advancing understanding of this condition.
Area of Science:
- Neurology
- Genetics
- Ophthalmology
Background:
- Muscle-eye-brain (MEB) disease is a rare genetic disorder.
- This study presents a comprehensive case report of an MEB patient.
Observation:
- The patient exhibited severe visual impairment and optic atrophy from infancy.
- Neurophysiological tests revealed abnormal visual evoked potentials (VEP) and electroretinograms (ERG).
- Brain imaging (CT, MR) showed a characteristic "cobblestone complex" pattern, with histological analysis confirming hypomyelination and migration abnormalities.
Findings:
- The patient survived to 21 years, displaying typical MEB clinical manifestations.
- Genetic sequencing identified two recessive mutations (c.1274G>C and c.1895+1_4delGTGA) in the POMGnT1 gene.
- These findings confirm the genetic basis of MEB disease.
Implications:
- This case reinforces the diagnostic criteria for MEB disease.
- Understanding the genetic mutations in POMGnT1 aids in diagnosing and potentially managing MEB.
- Long-term follow-up data contributes to the natural history of MEB disease.
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