MEGALENCEPHALIC LEUKOENCEPHALOPATHY WITH SUBCORTICAL CYSTS WITH HOMOZYGOUS MUTATION (C.448DELC, P.LEU150 SER FSX11)...

Area of Science:

• Neurology
• Genetics
• Molecular Biology

Background:

• Van der Knaap disease, also known as macrocephaly with progressive կspastic pseudobulbar syndrome, is a rare, genetically heterogeneous cerebral white matter disease.
• It is characterized by macrocephaly, epilepsy, and a slowly progressive spastic cerebellar syndrome.
• The condition is inherited in an autosomal recessive pattern, typically caused by mutations in the MLC1 gene.

Observation:

• This report presents a case of Van der Knaap disease.
• The patient exhibited a homozygous mutation (c.448delC, p.Leul50 ser fsX11) in exon 6 of the MLC1 gene.

Findings:

• Identification of a specific homozygous mutation in the MLC1 gene in a patient with Van der Knaap disease.
• This finding reinforces the role of MLC1 gene mutations in the etiology of this rare neurological disorder.

Implications:

• Contributes to the genetic understanding of Van der Knaap disease.
• May aid in the diagnosis and genetic counseling for families affected by this rare cerebral white matter disease.
• Highlights the importance of molecular genetic testing in diagnosing rare neurological conditions.