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Published on: August 15, 2019
POMT2 mutation in a patient with 'MEB-like' phenotype
E Mercuri1, A D'Amico, A Tessa
1Eugenio Mercuri Department of Paediatric Neurology, Child Neurology Unit, Catholic University, Rome, Italy. e.mercuir@imperial.ac.uk
Neuromuscular Disorders : NMD
|May 17, 2006
Summary
Heterozygous mutations in POMT2, previously linked to severe Walker-Warburg phenotype, are now associated with milder intellectual disability and distinct brain abnormalities. This expands the known spectrum of POMT2-related neurological disorders.
Area of Science:
- Genetics
- Neuroscience
- Developmental Biology
Background:
- Mutations in POMT2 gene are typically associated with the severe Walker-Warburg phenotype, a congenital muscular dystrophy.
- The POMT2 gene encodes an enzyme crucial for glycosylation of alpha-dystroglycan, essential for muscle and brain development.
Observation:
- A patient presented with a milder phenotype including intellectual disability, microcephaly, and specific muscle hypertrophy.
- Brain imaging revealed structural abnormalities predominantly in the posterior fossa.
Findings:
- The patient was found to have heterozygous mutations in the POMT2 gene.
- This case expands the genotypic and phenotypic spectrum associated with POMT2 mutations.
Implications:
- POMT2 mutations can lead to a broader range of neurological presentations than previously recognized.
- This suggests POMT2 mutations, similar to POMT1 and FKRP, are associated with significant clinical heterogeneity.
- Further research is needed to understand the genotype-phenotype correlations in POMT2-related disorders.
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