Efthymiou S, Novis LE, Koutsis G, Koniari C, Maroofian R, Turchetti V, Velonakis G, Vasconcellos LF, Raskin S, Srinivasan VM, Pagnamenta AT, Arun YB, Kinhal UV, Gowda VK, Teive HAG, Houlden H. Pure cerebellar ataxia due to bi-allelic PRDX3 variants including recurring p.Asp202Asn.
Ann Clin Transl Neurol 2023;
10:1910-1916. [PMID:
37553803 PMCID:
PMC10578881 DOI:
10.1002/acn3.51874]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/10/2023] Open
Abstract
Bi-allelic variants in peroxiredoxin 3 (PRDX3) have only recently been associated with autosomal recessive spinocerebellar ataxia characterized by early onset slowly progressive cerebellar ataxia, variably associated with hyperkinetic and hypokinetic features, accompanied by cerebellar atrophy and occasional olivary and brainstem involvement. Herein, we describe a further simplex case carrying a reported PRDX3 variant as well as two additional cases with novel variants. We report the first Brazilian patient with SCAR32, replicating the pathogenic status of a known variant. All presented cases from the Brazilian and Indian populations expand the phenotypic spectrum of the disease by displaying prominent neuroradiological findings. SCAR32, although rare, should be included in the differential diagnosis of sporadic or recessive childhood and adolescent-onset pure and complex cerebellar ataxia.
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