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Updated: Jun 20, 2025

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Current advance on distal myopathy genetics.

Johanna Ranta-Aho1,2, Mridul Johari1,2,3, Bjarne Udd1,4

  • 1Folkhälsan Research Center.

Current Opinion in Neurology
|July 17, 2024
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Summary
This summary is machine-generated.

Recent discoveries reveal novel genetic causes for distal myopathies, improving molecular diagnostics for these rare muscle-weakening diseases. This advances understanding of their genetic basis and pathology.

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Area of Science:

  • Neurology
  • Genetics
  • Rare Diseases

Background:

  • Distal myopathies are rare genetic muscle disorders causing weakness in hands/feet.
  • Symptoms may initially affect distal muscles, potentially progressing proximally.

Purpose of the Study:

  • To summarize the latest findings on genetic and clinical features of distal myopathies.
  • To highlight recent advancements in understanding the molecular basis of these conditions.

Main Methods:

  • Review of recent scientific literature on distal myopathies.
  • Analysis of identified genetic variants and associated clinical presentations.

Main Results:

  • Novel genes (SMPX, DNAJB2, HSPB6, RILPL1, ABCD3, HNRNPA1, TARDBP, ACTN2) identified for various distal myopathies.
  • Discovery of recessive forms in ACTN2-related distal myopathy.
  • Identification of late-onset distal myopathy and neuromyopathy causes.

Conclusions:

  • New gene discoveries enhance molecular diagnostic capabilities for distal myopathies.
  • Increased understanding of the genetic landscape and pathology of distal myopathies.
  • Advances contribute to improved patient diagnosis and management strategies.