Assessing the prognostic value of early oculomotor abnormalities in Huntington’s disease
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By
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Ahmad Kaddoura
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Solveig E. J. Dalbro
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Marleen R. van Walsem
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Lasse Pihlstrøm
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June 15, 2026
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Clinical Scorecard: Evaluating the Predictive Significance of Early Oculomotor Dysfunction in Huntington's Disease
At a Glance
| Category | Detail |
|---|
| Condition | Huntington's Disease |
| Key Mechanisms | Oculomotor dysfunction as a predictor of disease progression |
| Target Population | Premanifest gene carriers of Huntington's disease |
| Care Setting | Observational studies |
Key Highlights
- Oculomotor deficits appear before motor diagnosis in Huntington's disease.
- Vertical eye movements are more affected than horizontal movements pre-diagnosis.
- Saccade velocity, vertical smooth pursuit, and horizontal saccade initiation are significant predictors of progression.
- Digital eye tracking tools may serve as biomarkers for tracking disease progression.
- The study utilized data from Enroll-HD and PREDICT-HD observational studies.
Guideline-Based Recommendations
Diagnosis
- Diagnosis of motor manifest HD corresponds to Diagnostic Confidence Level (DCL) = 4.
Management
Monitoring & Follow-up
- Monitor oculomotor function using the Unified Huntington’s Disease Rating Scale.
Risks
Patient & Prescribing Data
Participants with expanded CAG repeat in the HTT gene (≥ 36 repeats).
Oculomotor abnormalities may indicate early disease progression.
Clinical Best Practices
- Utilize digital eye tracking for early detection of oculomotor dysfunction.
- Incorporate oculomotor assessments in clinical trials and observational studies.
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