NCT03875404

Brief Summary

Researchers are investigating improved methods of targeting deep brain stimulators for treatment of essential tremor relying on brain connectivity measures derived from MRI.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
9

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Mar 2019

Typical duration 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

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 8, 2019

Completed
6 days until next milestone

First Posted

Study publicly available on registry

March 14, 2019

Completed
6 days until next milestone

Study Start

First participant enrolled

March 20, 2019

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2020

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

February 12, 2021

Completed
Last Updated

September 17, 2021

Status Verified

September 1, 2021

Enrollment Period

1.8 years

First QC Date

March 8, 2019

Last Update Submit

September 13, 2021

Conditions

Keywords

Deep Brain Stimulation

Outcome Measures

Primary Outcomes (1)

  • Change in tremor rating score

    Fahn, Tolosa, Marin Tremor Rating Scale 1-9 Tremor (rate tremor) 0 = None 1. = Slight. 2. = Moderate amplitude. 3. = Marked amplitude 4. = Severe amplitude 0 = Normal 1. = Mildly abnormal. 2. = Moderately abnormal. 3. = Marked abnormal. 4. = Severely abnormal.

    One year

Study Arms (1)

Deep Brain Stimulation subjects

EXPERIMENTAL
Diagnostic Test: Functional MRI

Interventions

Functional MRIDIAGNOSTIC_TEST

A special type of MRI measuring the metabolic changes that occur within the brain. It may be used to examine the brain's anatomy and determine which parts of the brain are handling critical functions. It helps identify important language and movement control areas in the brain.

Deep Brain Stimulation subjects

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Diagnosis of refractory essential tremor scheduled for unilateral thalamic deep brain stimulator placement
  • Age ≥ 18 years

You may not qualify if:

  • Prior deep brain stimulator, stereotactic radiosurgery, or focused ultrasound procedure for treatment of tremor
  • Presence of concomitant movement disorder (e.g. Parkinson's disease, dystonia, etc.)
  • Known pre-existing structural brain abnormality (e.g, infarction, tumor, prior brain surgery, etc.)
  • Contraindication to 3 Tesla brain MRI (e.g. incompatible implanted device)
  • Pregnant

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Mayo Clinic in Florida

Jacksonville, Florida, 32224, United States

Location

Related Links

MeSH Terms

Conditions

Essential Tremor

Interventions

Magnetic Resonance Imaging

Condition Hierarchy (Ancestors)

Movement DisordersCentral Nervous System DiseasesNervous System Diseases

Intervention Hierarchy (Ancestors)

TomographyDiagnostic ImagingDiagnostic Techniques and ProceduresDiagnosis

Study Officials

  • Erik H Middlebrooks

    Mayo Clinic

    PRINCIPAL INVESTIGATOR

Study Design

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

Study Record Dates

First Submitted

March 8, 2019

First Posted

March 14, 2019

Study Start

March 20, 2019

Primary Completion

December 31, 2020

Study Completion

February 12, 2021

Last Updated

September 17, 2021

Record last verified: 2021-09

Data Sharing

IPD Sharing
Will not share

Locations