Detection of interruptions in the GAA trinucleotide repeat expansion in the FXN gene of Friedreich ataxia

Timothy P Holloway, Simone M Rowley, Martin B. Delatycki, Joseph P Sarsero

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)


Friedreich ataxia is a neurodegenerative disorder caused by the expansion of a GAA trinucleotide repeat sequence within the first intron of the FXN gene. Interruptions in the GAA repeat may serve to alleviate the inhibitory effects of the GAA expansion on FXN gene expression and to decrease pathogenicity. We have developed a simple and rapid PCR- and restriction enzyme-based assay to asess the purity of GAA repeat sequences.

Original languageEnglish
Pages (from-to)182-186
Number of pages5
Issue number3
Publication statusPublished - Mar 2011
Externally publishedYes


  • Friedreich ataxia
  • FXN gene
  • GAA trinucleotide repeat expansion
  • MboII

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