MW
Marion Wandzel
Author with expertise in Genomic Imprinting and Parental Gene Expression Control
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A common flanking variant is associated with enhanced stability of the FGF14-SCA27B repeat locus

David Pellerin et al.Jun 27, 2024
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A common flanking variant is associated with enhanced meiotic stability of theFGF14-SCA27B locus

David Pellerin et al.May 14, 2023
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Abstract The factors driving initiation of pathological expansion of tandem repeats remain largely unknown. Here, we assessed the FGF14 -SCA27B (GAA)•(TTC) repeat locus in 2,530 individuals by long-read and Sanger sequencing and identified a 5’-flanking 17-bp deletion-insertion in 70.34% of alleles (3,463/4,923). This common sequence variation was present nearly exclusively on alleles with fewer than 30 GAA-pure repeats and was associated with enhanced meiotic stability of the repeat locus.