FGF14 (GAA) repeat expansion-associated Ataxia (SCA27B): Expanding the clinical and diagnostic spectrum from the
E M Gatto1, N Gonzalez Rojas2, M E Cesarini2
1Sanatorio de La Trinidad Mitre, Ciudad de Buenos Aires, Argentina; Instituto Neurociencias Buenos Aires (INEBA), Ciudad de Buenos Aires, Argentina.
Parkinsonism & Related Disorders
|September 8, 2026
Abstract:
Spinocerebellar ataxia 27B (SCA27B), caused by an FGF14 GAA repeat expansion, is an emerging cause of late-onset ataxia. We report the first genetically confirmed Argentinean case, initially misdiagnosed as alcoholic cerebellar degeneration. This case highlights diagnostic challenges, phenotypic heterogeneity, and the importance of genetic testing for this treatable disorder.


