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Related Experiment Videos

Mutations and polymorphisms in the human methyl CpG-binding protein MECP2.

Gabriel Miltenberger-Miltenyi1, Franco Laccone

  • 1Institute of Human Genetics, University of Göttingen, Göttingen, Germany.

Human Mutation
|July 23, 2003
PubMed
Summary

Rett syndrome, a neurodevelopmental disorder, is frequently caused by mutations in the MECP2 gene. This study reviews MECP2 mutations, finding a high prevalence of de novo mutations on the paternal chromosome.

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Area of Science:

  • Genetics
  • Neuroscience
  • Molecular Biology

Background:

  • Rett syndrome (RTT) is a significant neurodevelopmental disorder primarily affecting girls.
  • Mutations in the MECP2 gene are a leading cause of RTT, accounting for up to 75% of classical cases.
  • The MECP2 gene, located at Xq28, was identified in 1992.

Purpose of the Study:

  • To summarize published MECP2 mutational reports in Rett syndrome patients.
  • To ensure consistency and apply standardized nomenclature to MECP2 mutation descriptions.
  • To contribute to understanding the neuropathogenetic mechanisms underlying RTT.

Main Methods:

  • Comprehensive review of published MECP2 mutation data.
  • Analysis of mutation distribution and types across the MECP2 gene.

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  • Examination of parental origin of MECP2 mutations.

    • Main Results:

    • Over 2,100 patients and 218 distinct MECP2 mutations have been reported.
    • MECP2 mutations are found throughout the gene and include various types.
    • A high frequency of de novo mutations on the paternal chromosome was observed.

    Conclusions:

    • MECP2 mutations are central to the pathogenesis of Rett syndrome.
    • Standardized nomenclature is crucial for consistent reporting of genetic variants.
    • Further research into MeCP2 function is vital for understanding RTT neuropathogenesis.