What SARA score indicates moderate disability in FRDA?

SARA range 0-40; mild 20; scores correlate with GAA repeat length. Annual SARA change of 0.8-2.0 points is typical progression rate.

What is the leading cause of death in Friedreich ataxia?

Hypertrophic cardiomyopathy and arrhythmia (particularly ventricular tachycardia and atrial fibrillation) cause ~60% of deaths; annual echocardiogram and Holter monitoring are essential.

What is the prevalence of diabetes in FRDA?

Type 1-like diabetes occurs in 8-32% of FRDA patients due to frataxin deficiency in pancreatic beta cells causing iron-mediated damage; annual HbA1c screening is recommended.

What is the mechanism of omaveloxolone in FRDA?

Omaveloxolone activates the Nrf2 pathway, improving mitochondrial function and reducing oxidative stress; approved (Skyclarys) in 2023 for FRDA in patients ≥16 years; 1.5-point SARA improvement vs placebo.

What is the GAA repeat length correlation with age of onset?

Smaller GAA repeat in the shorter allele predicts earlier onset and severity; GAA 800: typical onset by age 10-15; LOFA (late-onset FA) has smaller repeats (<400).

Friedreich Ataxia Severity and Disability Staging

Stages Friedreich ataxia disability using the SARA (Scale for Assessment and Rating of Ataxia) and Functional Disability Scale, assessing cerebellar, cardiac (hypertrophic cardiomyopathy), and metabolic (diabetes) complications.

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Friedreich Ataxia Severity and Disability Staging

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Frequently Asked Questions

What SARA score indicates moderate disability in FRDA?

What is the leading cause of death in Friedreich ataxia?

What is the prevalence of diabetes in FRDA?

What is the mechanism of omaveloxolone in FRDA?

What is the GAA repeat length correlation with age of onset?