NCT01563341

Brief Summary

Does dual hemispheric stimulation of the subthalamic nucleus (STN) and fornix/hypothalamus potentially improve cognitive function in patients with Parkinsons disease.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
5

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Apr 2012

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 20, 2012

Completed
6 days until next milestone

First Posted

Study publicly available on registry

March 26, 2012

Completed
6 days until next milestone

Study Start

First participant enrolled

April 1, 2012

Completed
11.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 18, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 18, 2023

Completed
1.2 years until next milestone

Results Posted

Study results publicly available

December 27, 2024

Completed
Last Updated

December 27, 2024

Status Verified

December 1, 2024

Enrollment Period

11.6 years

First QC Date

March 20, 2012

Results QC Date

September 6, 2024

Last Update Submit

December 19, 2024

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change in Memory Testing From Presurgical Baseline to 12 Months

    Memory will be assessed with the Hopkins Verbal Learning Test. The test consists of a set of six forms. Each test includes a list of 12 nouns; the examiner reads the list to the examinee, who repeats as many words as remembered. This process is repeated three times; 20-25 minutes later, examinees are asked again to recall as many words as possible; for the final task, the examiner reads a list of 24 words (including the 12 words from the list) and asks the examinee after each whether the word was on the list. For interpreting findings, in each metric listed on a scale from 0 to 12 with zero being worse and 12 being best (total recall, delayed recall, retention), higher scores reflect better learning efficiency (total recall) and memory (delayed recall, retention). Since this is a longitudinal study, follow-up scores will be compared to baseline. A positive direction of change would be interpreted as "improved" and a negative direction of change would be interpreted as "declined".

    baseline, 12 months

Study Arms (1)

Deep Brain Stimulation

EXPERIMENTAL

Parkinson's disease patients who would otherwise be undergoing subthalamic nucleus (STN) deep brain stimulation (DBS) will have dual hemispheric stimulation of the STN and globus pallidus interna (GPi).

Device: Deep brain stimulation

Interventions

Study will be utilizing multiple brain electrodes simultaneously. The study will require at least two electrodes to be placed in one cerebral hemisphere (one for motor improvement and one for potential cognitive implications).

Deep Brain Stimulation

Eligibility Criteria

Age40 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • All patients will be enrolled from the practice of the primary investigator.
  • Parkinson's Disease (PD) patients in whom optimal medical therapy has failed.
  • All patients will have responsivity to levodopa.
  • Individuals with normal or mild cognitive impairment.

You may not qualify if:

  • Clinically significant dementia
  • Other significant neurological or psychiatric disease
  • Previous brain surgery including pallidotomy or thalamotomy
  • Previous placement of other implantable devices

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Mayo Clinic in Florida

Jacksonville, Florida, 32224, United States

Location

MeSH Terms

Conditions

Parkinson Disease

Interventions

Deep Brain Stimulation

Condition Hierarchy (Ancestors)

Parkinsonian DisordersBasal Ganglia DiseasesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesMovement DisordersSynucleinopathiesNeurodegenerative Diseases

Intervention Hierarchy (Ancestors)

Electric Stimulation TherapyTherapeuticsSurgical Procedures, Operative

Results Point of Contact

Title
Ryan J. Uitti, MD
Organization
Mayo Clinic

Study Officials

  • Ryan Uitti, M.D.

    Mayo Clinic

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

March 20, 2012

First Posted

March 26, 2012

Study Start

April 1, 2012

Primary Completion

October 18, 2023

Study Completion

October 18, 2023

Last Updated

December 27, 2024

Results First Posted

December 27, 2024

Record last verified: 2024-12

Locations