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

Area of Science:

• Neurodegenerative Diseases
• Genetics and Genomics
• Clinical Neurology

Background:

• Huntington's disease (HD) is a rare autosomal dominant neurodegenerative disorder.
• Existing research on HD predominantly focuses on Caucasian populations.
• Limited data exists regarding racial variations in HD presentation and progression.

Purpose of the Study:

• To investigate and compare the clinical presentation and disease progression of Huntington's disease across different racial groups.
• To utilize the longitudinal observational Enroll-HD study data for comprehensive analysis.
• To establish a baseline for understanding racial disparities in Huntington's disease.

Main Methods:

• Employed propensity score matching based on cytosine-adenine-guanine (CAG) age product score and age.
• Identified and compared White, Hispanic, Asian, and Black participants from the Enroll-HD database.
• Utilized White participants as the control cohort for comparing clinical presentations and progression.

Main Results:

• Black participants exhibited significantly more severe clinical presentations at baseline across all measured parameters.
• No statistically significant differences in the rate of disease progression were observed between the studied racial groups.
• The findings highlight baseline clinical heterogeneity among racial groups in Huntington's disease.

Conclusions:

• Investigated potential factors contributing to the observed baseline clinical differences in Black participants.
• Emphasized the critical need for enhanced recruitment of underrepresented minorities in rare disease research.
• Highlighted the importance of considering racial and ethnic diversity in understanding and managing Huntington's disease.