Sundal C, Axelsson M, Wiklund L, Lindberg C, Andersen O. A SCA7 premutation may be a novel Mendelian modifier of MS course: A case report.
Mult Scler Relat Disord 2019;
31:148-150. [PMID:
30999137 DOI:
10.1016/j.msard.2019.04.009]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 03/28/2019] [Accepted: 04/10/2019] [Indexed: 11/25/2022]
Abstract
A proportion of patients with the phenotype of complex genetic disorders carry dominantly inherited Mendelian traits, exemplified by hereditary spastic paraparesis influencing pyramidal symptoms in some MS cases. We here describe a mutable ATXN7 gene, a SCA7 premutation, in a patient fulfilling contemporary definitions of primary progressive MS. His onset age, and onset with a severely progressive cerebellar ataxia syndrome, was outside the reported range of symptoms in a representative MS material. We suggest that an ATXN7 premutation is a novel genetic modifier of the course of MS.
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