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An Electrochemiluminescence-Based Assay for MeCP2 Protein Variants
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MECP2 Variants in Males: More Common than Previously Appreciated.

Amitha Ananth1, Cary Fu2, Jeffrey L Neul2

  • 1Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama.

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|October 30, 2024
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Summary

This study identified 59 males with MECP2 variants, aged 2-28 years, to understand clinical features in males with Rett syndrome. Findings aid diagnosis, care, and therapeutic development for this rare condition.

Keywords:
Klinefelter syndromeMECP2 variantsMalesRett syndromeSomatic mosaicism

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Area of Science:

  • Genetics
  • Neurology
  • Pediatrics

Background:

  • MECP2 variants are a rare cause of neurological disorders in males.
  • Rett syndrome is typically associated with females, but males can be affected by MECP2 mutations.

Purpose of the Study:

  • To characterize the age and MECP2 variant spectrum in recently identified males.
  • To lay the groundwork for future studies on the clinical presentation of males with MECP2 variants.

Main Methods:

  • Genetic data for MECP2 variants were obtained from the Parent Group for Males.
  • Information on variant inheritance (de novo or maternal) and mosaicism was collected.

Main Results:

  • Fifty-nine males with MECP2 variants were identified, aged 2-28 years (median 7.0, mean 10.8).
  • Most variants were de novo (78.0%); 18.6% of males had mosaicism.
  • The total cohort, including prior studies, comprised 85 males, with 27 deceased.

Conclusions:

  • Characterizing males with MECP2 variants is crucial for improving diagnosis, care, and research.
  • These findings support the development of targeted therapies, emphasizing equitable access for males.