Spinocerebellar ataxia type 2 has multiple ancestral origins

Spinocerebellar ataxia type 2 (SCA2) is a dominant neurodegenerative disorder due to expansions of a CAG repeat tract (CAGexp) at the ATXN2 gene. Previous studies found only one ancestral haplotype worldwide, with a C allele at rs695871. This homogeneity was unexpected, given the severe anticipations related to SCA2. We aimed to describe informative ancestral haplotypes found in South American SCA2 families.

Source: Parkinsonism and Related Disorders - December 31, 2023 Category: Neurology Authors: Lucas Schenatto Sena, Gabriel Vasata Furtado, Jos é Luiz Pedroso, Orlando Barsottini, Mario Cornejo-Olivas, Paulo Ribeiro Nóbrega, Pedro Braga Neto, Danyela Martins Bezerra Soares, Fernando Regla Vargas, Clecio Godeiro, Paula Frassinetti Vasconcelos de Source Type: research