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FARAFARA Cure FA

Epigenetic promoter silencing in Friedreich ataxia is dependent on repeat length

OBJECTIVE:

Friedreich ataxia (FRDA) is caused by an expanded GAA triplet-repeat (GAA-TR) mutation in the FXN gene. Patients are typically homozygous for expanded alleles containing 100 to 1,300 triplets, and phenotypic severity is significantly correlated with the length of the shorter of the 2 expanded alleles. Patients have a severe deficiency of FXN transcript, which is predominantly caused by epigenetic silencing of the FXN promoter. We sought to determine whether the severity of FXN promoter silencing is related to the length of the expanded GAA-TR mutation in FRDA.

Read More: Epigenetic promoter silencing in Friedreich ataxia is dependent on repeat length


About the Author

Jen Farmer

Jen Farmer

Executive Director

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