4.6 Article

Racial Differences in the Presentation and Progression of Huntington's Disease

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MOVEMENT DISORDERS
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WILEY
DOI: 10.1002/mds.29536

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racial differences; race; disease burden; Huntington's disease; health-care disparities

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By analyzing the Enroll-HD longitudinal observational study, it was found that there are differences in the presentation and progression of Huntington's disease (HD) across race groups, with black participants being more severe at baseline. The factors driving clinical differences for black participants were considered, and the importance of improving the recruitment of Asian and black patients in rare disease studies was emphasized.
BackgroundHuntington's disease (HD) is an autosomal dominant neurodegenerative disease that predominantly impacts a Caucasian population, but few efforts have explored racial differences in presentation and progression. ObjectiveThe aim was to assess the presentation and progression of HD across race groups using the Enroll-HD longitudinal observational study. MethodsWe applied propensity score matching for cytosine-adenine-guanine age product score, and age, to identify White, Hispanic, Asian, and Black participants from the Enroll-HD database. We compared clinical presentations at baseline, and progression over time, using White participants as a control cohort. ResultsBlack participants were more severe at baseline across all clinical measures. No significant differences in progression were observed between race groups. ConclusionsWe consider the factors driving clinical differences at baseline for Black participants. Our data emphasize the necessary improvement in underrepresented minority recruitment for studies of rare diseases. & COPY; 2023 International Parkinson and Movement Disorder Society.

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