Huntington's Disease: A Clinical Review

Area of Science:

• Neuroscience
• Genetics
• Molecular Biology

Background:

• Huntington's disease (HD) is a fatal, autosomal dominant neurological disorder.
• It is characterized by a CAG trinucleotide repeat expansion in the Huntington's gene on chromosome 4.
• HD prevalence is significantly higher in populations of European descent compared to East Asian populations.

Purpose of the Study:

• To summarize the current understanding of Huntington's disease pathogenesis.
• To review recent advancements in research and potential therapeutic strategies for HD.
• To highlight promising new treatments aimed at reducing mutant huntingtin levels.

Main Methods:

• Review of scientific literature on Huntington's disease genetics, cellular pathology, and neurodegeneration.
• Analysis of current therapeutic approaches, including palliative care and emerging treatments.
• Focus on the mechanisms of mutant huntingtin toxicity and strategies to counteract it.

Main Results:

• Mutant huntingtin protein triggers neuronal dysfunction and loss through various cellular impairments.
• Progressive brain alterations, particularly in the striatum, are observed as HD advances.
• Significant progress has been made in understanding HD's cellular pathology and structural brain changes.

Conclusions:

• Current HD management relies on palliative care and symptom control due to limited disease-modifying treatments.
• Emerging therapies, especially those targeting mutant huntingtin reduction, show significant promise.
• Antisense oligonucleotide treatments are in clinical trials, representing a hopeful step forward in managing and potentially eradicating HD.