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Spinocerebellar Ataxia Type 2.

Daniel R Scoles1, Stefan M Pulst2

  • 1Department of Neurology, University of Utah, 175 North Medical Drive East, 5th Floor, Salt Lake City, UT, 84132, USA.

Advances in Experimental Medicine and Biology
|February 11, 2018
PubMed
Summary

Spinocerebellar ataxia type 2 (SCA2) is an inherited neurodegenerative disease caused by ATXN2 gene mutations. Research is exploring ATXN2 molecular features to find a treatment for SCA2 patients.

Keywords:
Ataxin-2CerebellumNeurodegenerationSpinocerebellar ataxia type 2

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Area of Science:

  • Neurogenetics
  • Molecular Neurology
  • Ataxia Research

Background:

  • Spinocerebellar ataxia type 2 (SCA2) is an autosomal dominant disorder.
  • It results from CAG repeat expansion in the ATXN2 gene, leading to an expanded polyglutamine (polyQ) tract in the ATXN2 protein.
  • SCA2 manifests as progressive ataxia and slow saccades, with no current treatments available.

Purpose of the Study:

  • To review the characteristics of SCA2 patients.
  • To discuss the molecular features of the ATXN2 gene and protein.
  • To summarize progress toward developing a treatment for SCA2.

Main Methods:

  • Review of patient characteristics.
  • Analysis of ATXN2 molecular genetics.
  • Summary of therapeutic development research.

Main Results:

  • ATXN2 mutations lead to toxic gain-of-function, causing reduced Purkinje cell (PC) firing and eventual PC loss.
  • Understanding ATXN2 molecular features is crucial for SCA2 pathogenesis.
  • Progress in identifying potential therapeutic targets is being made.

Conclusions:

  • SCA2 is a complex neurodegenerative disease linked to ATXN2 gene mutations.
  • Further research into ATXN2's molecular mechanisms is essential for therapeutic development.
  • The identification of a treatment for SCA2 remains an active area of investigation.