ArticleCerebellum (London, England)2024
Prevalence and Diagnostic Journey of Friedreich's Ataxia in the State of São Paulo, Brazil.
Article in Cerebellum (London, England), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 10 citations in OpenAlex.
- Rare diseases in Brazil: a nationwide analysis of the diagnostic odyssey.Journal of community genetics · 2026Article
- Cross-Cultural Adaptation of the Patient-Reported Outcome Measure of Ataxia: the Brazilian Version of PROM-Ataxia.Cerebellum (London, England) · 2025Article
- Healthcare delay in neurogenetic disorders of adult onset and the role of predictive genetic testing.Journal of community genetics · 2025Article
- Autosomal Recessive Ataxias in Northeast Brazil: A Regional Multicenter Case Series.Cerebellum (London, England) · 2025Article
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Authors and funding
9 authors at 3 institutions in 1 country.
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Abstract
Friedreich's Ataxia (FRDA) is the leading cause of ataxia worldwide, but data on epidemiology and diagnostic journey are scarce, particularly in Latin America. Herein we estimated the prevalence of FRDA in the most populous Brazilian state and characterized the diagnostic odyssey of the disease. We received anonymized data of patients with FRDA from advocacy groups and physicians. Prevalence was estimated dividing the number of patients by the population of the state as reported in the last census. Patients were invited to answer an online survey to describe clinical data and diagnostic journey of the disease. FRDA estimated prevalence was 0.367:100,000, with a slight predominance of women (58.2% vs 41.7%). One hundred and four patients answered the survey (mean age of 37.3 ± 13.8 years; 75.9% classical and 24.0% late onset). On average, 6.2 ± 4.1 physicians were visited before reaching the diagnosis. Mean diagnostic delay was 7.8 ± 6.7 years; no difference between classical and LOFA groups was found. Most of the patients reported unsteadiness and gait abnormalities as the first symptom. Neurologists and orthopedical surgeons were the main specialties first sought by patients. We found a prevalence of 0.36:100,000 for FRDA in the state of São Paulo, Brazil. The disease is characterized by remarkable diagnostic delay, with no relevant differences between classical and LOFA patients.
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