Mitochondrial membrane protein-associated neurodegeneration: a case report and literature review
Pavel Dušek1, David Školoudík2, Jan Roth1
1a Department of Neurology, Centre of Clinical Neurosciences, 1st Faculty of Medicine , Charles University and General University Hospital , Prague , Czech Republic.
Abstract:
Mitochondrial membrane protein-associated neurodegeneration (MPAN) is an autosomal recessive disorder caused by mutation in the C19orf12 gene. We report a compound heterozygous c.[32C>T];[205G>A;424A>G] (p.[Thr11Met];[Gly69Arg;Lys142Glu]) Czech patient who manifested with right foot dystonia, impaired handwriting, attention deficit, and signs of iron accumulation on brain MRI. Gradually, he developed dysarthria, spastic-dystonic gait, pedes cavi, and atrophy of leg muscles. Additionally, we report demographic parameters, clinical signs, and allelic frequencies of C19orf12 mutations of all published MPAN cases. We compared the most frequent mutations, p.Thr11Met and p.Gly69ArgfsX10; the latter was associated with younger age at onset and more frequent optic atrophy in homozygotes.
Insights
Mitochondrial membrane protein-associated neurodegeneration (MPAN) is a rare genetic disorder. This study details a unique Czech patient
Area of Science:
- Neurogenetics
- Molecular Neurology
- Rare Diseases
Background:
- Mitochondrial membrane protein-associated neurodegeneration (MPAN) is a rare, autosomal recessive neurodegenerative disorder.
- Mutations in the C19orf12 gene are the known cause of MPAN.
- MPAN is characterized by progressive neurological deficits and iron accumulation in the brain.
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