HD

Huntington Disease

Severity and Age of Onset Importance in diagnosing: Helps locate the severity and age of onset of Huntington's disease.

• Onset in twenties: If Huntington's disease presents in an individual's twenties, it is categorized as juvenile Huntington's disease.

Population Genetics Prevalence:

• Approximately 5 to 10 cases per 100,000 individuals in the Western population.

• Gene frequency: Variation in prevalence aligned with genetic background.

• Higher likelihood in individuals of European descent.

• Very rare occurrence in African, Japanese, and Chinese populations.

Disease Management:

• Annual cases: Estimation of 5 to 10 new cases each year within a population of 11,000.

• Treatment options:

  • Tetrabenazine: Medication used to manage movement disorders, particularly chorea. Provides about 70% management efficiency. Note: It manages symptoms but does not slow disease progression.

  • Antidepressants: Included in treatment regimens for symptomatic management.

Normal vs. Mutant Gene Function:

• HTT gene: Present in all individuals.

• Functionality: Involved in vascular transport. Plays a role in transcription regulation. Contributes to anti-infective processes.