FGF14 Repeat Expansions in Adult Ataxia Study

This research article elucidates the diagnostic yield and allelic characteristics of FGF14 repeat expansions in adult ataxia through whole genome sequencing (WGS). The study identifies adult ataxia as a progressive neurodegenerative disorder characterized by impaired coordination of muscle movements. The research highlights that the diagnostic yield for adult ataxia via next-generation sequencing exceeds 30%, with potential for further increases through alternative methodologies. The findings reveal that FGF14 expansions may account for a significant proportion of adult-onset ataxia cases, particularly in certain cohorts. The methodology includes short tandem repeat calling for the FGF14 intronic expansion locus, which was performed using WGS. Results indicate that FGF14 expansions are a notable contributor to adult ataxia, suggesting that incorporating repeat expansion analysis can enhance diagnostic assessments and clinical management for affected individuals. The article presents molecular findings from a clinical WGS cohort and emphasizes the importance of this genetic factor in adult ataxia cases.