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Blood cells from Friedreich ataxia patients harbor frataxin deficiency without a loss of mitochondrial function

Friedreich ataxia (FRDA) is an autosomal recessive neurodegenerative disorder caused by GAA triplet expansions or point mutations in the FXN gene on chromosome 9q13. The gene product called frataxin, a mitochondrial protein that is severely reduced in FRDA patients, leads to mitochondrial iron accumulation, Fe-S cluster deficiency and oxidative damage. The tissue specificity of this mitochondrial disease is complex and poorly understood. While frataxin is ubiquitously expressed, the cellular phenotype is most severe in neurons and cardiomyocytes. 

Blood cells from Friedreich ataxia patients harbor frataxin deficiency without a loss of mitochondrial function


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Jen Farmer

Jen Farmer

Executive Director

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