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Early Versus Late Application of STN DBS to PD Patients With Motor Complications

Early Versus Late Application of Subthalamic Deep Brain Stimulation to Parkinson's Disease Patients With Motor Complications: a Multicentre, Prospective and Observational Study

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT01922388
Acronym
ELASS
Enrollment
200
Registered
2013-08-14
Start date
2013-08-31
Completion date
2022-12-31
Last updated
2023-09-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Parkinson Disease

Keywords

Parkinson disease, deep brain stimulation, subthalamic nucleus, motor complication, quality of life

Brief summary

Although deep brain stimulation of the subthalamic nucleus(STN DBS) has become the surgical treatment of choice for Parkinson's disease(PD), a consensus on the timing of surgery is lacking. This study is intended to demonstrate that early, compared with delayed, introduction of STN DBS is more beneficial for PD patients who have developed motor complications.

Detailed description

In this prospective study, 200 PD patients will be recruited for STN DBS over three years, including 133 with motor complications existing for more than three years (late complication group) and 67 less than three years (early complication group). To make a comparison of therapeutic efficacy between the two groups, motor and non-motor symptoms will be assessed using specific rating scales and questionnaires.

Interventions

DEVICEBilateral deep brain stimulation of the subthalamic nucleus

Sponsors

Prince of Wales Hospital, Shatin, Hong Kong
CollaboratorOTHER
Shenzhen Second People's Hospital
CollaboratorOTHER
Chen Ling
Lead SponsorOTHER

Study design

Observational model
CASE_ONLY
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Idiopathic Parkinson's Disease with good response to levodopa(i.e. more than 30% improvement in the MDS-UPDRS Part III score after an acute levodopa challenge) * Presence of fluctuations and/or dyskinesias * Age ranging from 18 to 75 years old * Normal brain MRI * Absence of dementia (Mini Mental State Examination ≥ 26) * Absence of severe psychiatric diseases * Written informed consent

Exclusion criteria

* Presence of severe metabolic diseases * Severe cardiac/respiratory/renal/hepatic diseases * Secondary parkinsonism or multiple system atrophy * Illiteracy or insufficient language skills to complete the questionnaires * Poor compliance and unreasonable expectation * Women who are pregnant or breast feeding * Simultaneous participation in another clinical trial

Design outcomes

Primary

MeasureTime frameDescription
Changes in 39-item Parkinson's disease questionnaire (PDQ-39) scoresFrom baseline to 4 yearsQuality of life

Secondary

MeasureTime frameDescription
Changes in Movement Disorder Society-sponsored revision of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS) Part III scoresFrom baseline to 4 yearsMotor function
Changes in time spent in the on state without troubling dyskinesia based on Parkinson's disease home diaryFrom baseline to 4 yearsGood on time
Changes in MDS-UPDRS patient questionnaire (Part I B and Part II) scoresFrom baseline to 4 yearsMotor and non-motor experiences of daily living
Severe adverse effectsFrom baseline to 4 yearsSafety profile

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 25, 2026