Deep Brain Stimulation Treatment for Chorea in Huntington's Disease

Study Overview
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Brief Summary
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Evaluating therapeutic effects of globus pallidus internus (GPi) deep brain stimulation (DBS) on Huntington's disease (HD) patients with chorea； Explore the relationship between brain network conditions and DBS efficacy in HD patients Explore the effect of different programmed parameters on the treatment of patients with DBS

Detailed Description
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1. Evaluating therapeutic effects of GPi-DBS on HD patients with chorea: Clinical data of patients at different treatment time points will be collected, using different clinical assessments. The clinical case report form for HD-DBS is consistent with Enroll HD project and the case report form is attached in the appendix. The main purpose is to determine the efficiency of DBS treatment for HD with chorea by comparing the patients' status before and after surgery. Primary endpoints: Changes in chorea score of UHDRS, changes in total motor score (UHDRS). Secondary endpoints: changes in cognition will be assessed by stroop interference test, stroop word reading test, stroop colour naming test, trail making test, symbol digit modality test and mini-mental state examination(MMSE); changes in anxiety assessed by Hamilton Anxiety Scale(HAMA); changes in depression assessed by Hamilton depression scale(HAMD) and Beck Depression Inventory (BDI); changes in the frequency and severity of neuropsychiatric symptoms assessed by the Problem Behaviours Assessment for HD and changes in quality-of-life assessed by UHDRS functional assessment and UHDRS total functional capacity assessment. 2 Explore the relationship between brain network conditions and DBS efficacy in HD patients The electrophysiological signals during the operation of HD patients will be collected and analyzed, and compared with the postoperative disease conditions, to determine the relationship between the patient's EEG activity and the mechanism of disease development, disease progression, and treatment effect. 3. Explore the effect of different programmed parameters on the treatment of patients with DBS After the HD patient is turned on, the patient is programmed to adjust the program control parameters of different patients during adjustment, and the effects of different program control parameters on the patient, tolerance, and related side effects are clarified.

Official Title
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Deep Brain Stimulation Treatment for Chorea in Huntington's Disease

Conditions
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Huntington Disease, Deep Brain Stimulation

Intervention / Treatment
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* Device: Deep brain stimulation


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Huntington's Disease disgnosis by gene Predominant chorea UHDRS score ≥30 Mini-Mental State Examination (MMSE) score meets the education level No plan to change medication within 12 months after randomization Agree to enroll into the clinical trial Exclusion Criteria: Chorea caused by other diseases Concurrently or previously had other neurological disorders Severe psychiatric disease Unstable condition or severe heart, lung, liver, kidney, or hematopoietic diseases Have a history of cancer unless it has been cured or does not require treatment for the next 5 years Contraindications to an MRI scan Acute psychiatric symptomatology in the last 2 months including suicide ideation, angry or aggressive behaviour, and hallucinations

Ages Eligible for Study
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Minimum Age: 30 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Crossover Assignment
Interventional Model Description: Patients will be randomized into two groups, of which the first group will be routinely activated after surgery and then stimulated for 6 months. The second group of patients will be re-launched 3 months after surgery, continued stimulation for 3 months, and then entered the open study. Patient data will be collected before surgery, 3 months after surgery, and 6 months after surgery.
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: HD-DBS<br>This group will be routinely activated after surgery and then stimulated for 6 months. | Device: Deep brain stimulation<br>* the HD-DBS arm will be routinely activated after surgery and then stimulated for 6 months(6 months stimulation). The HD-shamDBS arm will be re-launched 3 months after surgery, continued stimulation for 3 months(3 months stimulation), and then entered the open study.<br>|
| Sham Comparator: HD-sham-DBS<br>This group of patients will be re-launched 3 months after surgery, continued stimulation for 3 months | Device: Deep brain stimulation<br>* the HD-DBS arm will be routinely activated after surgery and then stimulated for 6 months(6 months stimulation). The HD-shamDBS arm will be re-launched 3 months after surgery, continued stimulation for 3 months(3 months stimulation), and then entered the open study.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Unified Huntington's Disease Rating Scale（UHDRS）-total score difference | Difference between groups in the UHDRS total score at 3 months postoperative；from 0 to 124 points; the higher scores mean a worse outcome | 3 months postoperatively compared between groups | 
| Unified Huntington's Disease Rating Scale（UHDRS）-total score difference | Difference in the UHDRS total score at 6 months postoperative compared with baseline | 6 months postoperatively compared with baseline | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| UHDRS-Chorea subscore difference | Difference in the UHDRS chorea subscore at 6 months postoperative compared with baseline | 6 months postoperatively compared with baseline | 
| Mental Behavior Rating Scale difference | the total score of MMSE at 6 months postoperative compared with baseline | 6 months postoperatively compared with baseline | 
| Mental Behavior Rating Scale difference | the total score of BDI at 6 months postoperative compared with baseline | 6 months postoperatively compared with baseline | 
| EuroQol five dimensions questionnaire (EQ-5D) difference | the total score of EQ-5D at 6 months postoperative compared with baseline | 6 months postoperatively compared with baseline | 
| Neuroimage | MRI | preoperative, 3 months and 6 months postoperative | 
| electrophysiology | EEG and Local field potential (LFP) of GPi and GPe in patients with Huntington's Disease | 3 to 5 days postoperative | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Deep brain stimulation, Chorea, Huntington Disease