CClinicalTrials.gg
RecruitingNCT04991831Updated Mar 20, 2026

A Post-Approval Registry for Exablate 4000 Type 1.0 and Type 1.1 for Unilateral Thalamotomy for the Treatment of Medication-Refractory Tremor Dominant Idiopathic Parkinson's Disease

An observational study in Tremor Associated With Tremor Dominant Parkinson's Disease, sponsored by InSightec. Recruiting at 8 sites in 2 countries. Open to participants aged 30 Years to 99 Years. Per ClinicalTrials.gov, last updated 2026-03-20.

Sponsored by InSightec · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
50
Ages
30 Years to 99 Years
Sex
All
01

Study summary

The objectives of this study are to collect the long-term safety and effectiveness data of performing thalamotomy for tremor dominant Parkinson's Disease (TDPD) using the Exablate Neuro system.

Read the detailed description

This is a post-approval registry which is required by of the approval under PMA P150038/S006 for the Exablate® Model 4000 (Exablate Neuro) Type 1.0 and Type 1.1 for unilateral thalamotomy in the treatment of medication refractory Tremor Dominant Parkinson's Disease (TDPD). Subjects participating in this registry will have received a unilateral thalamotomy (ventralis medius) prior to enrollment using the commercially available Exablate Neuro for the treatment of Essential tremor and TDPD.

The following assessments will be collected at Baseline,1, 3, 6, and 12 months post Exablate procedure and annually thereafter for 5 years:

  • Adverse Events (AEs) (does not apply to Baseline Visit)
  • Medication usage
  • Clinical Rating Scale for Tremor (CRST) ON medication
  • Unified Parkinson's Disease Rating Scale Part III ON medication
  • EQ-5D-5L
  • WPAI-GH
02

Conditions studied

  • Tremor Associated With Tremor Dominant Parkinson's Disease
03

Who can participate

Ages eligible
30 Years to 99 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

The patient population enrolled in this registry will be comprised of male and female patients that plan to be treated for TDPD using the Exablate Neuro system.

Inclusion criteria

  1. Men and women, age 30 years and older
  2. Subject undergoing an Exablate procedure for their planned TDPD treatment; per local institution standard of care.
  3. Subject is willing to cooperate with the Registry requirements including compliance with the regimen and completion of all study visits
  4. Subject has signed and received a copy of the approved informed consent form

Exclusion criteria

Exclusion Criteria:

Subject does not agree to participate or is unlikely to participate for the entirety of the study.

04

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
50 participants (estimated)
Patient registry
No

Groups and cohorts

  • Post Exablate Neuro Thalamotomy for Tremor Associated with Tremor Dominant Parkinson's Disease

    This is a post Exablate Neuro Thalamotomy registry. No intervention is performed under this registry protocol.

    Device: Unilateral thalamotomy

Interventions

  • DeviceUnilateral thalamotomy

    Unilateral thalamotomy using focused ultrasound for the treatment of medication-refractory tremor dominant idiopathic Parkinson's Disease.

05

What researchers measure

Primary outcomes

  1. Long-term adverse events.

    This registry will collect the long-term safety data after performing thalamotomy for TDPD using the Exablate Neuro system.

    Time frame: Five years.

Secondary outcomes

  1. Tremor/motor intensity and impact on disability

    Long term tremor motor scores and the impact of tremor on disability will be monitored using components of the Clinical Rating Scale for Tremor (CRST)

    Time frame: Five years.

06

Study locations

8 of 8 sites recruiting
  • Miami Neuroscience Institute Baptist Health
    Miami, Florida 33176, United States
    Recruiting
  • Rush University
    Chicago, Illinois 60612, United States
    Recruiting
  • Brigham and Women's Hospital
    Boston, Massachusetts 02115, United States
    Recruiting
  • Weill Cornell Medicine
    New York, New York 10065, United States
    Recruiting
  • Novant Health Brain & Spine Surgery
    Huntsville, North Carolina 28708, United States
    Recruiting
  • Cleveland Clinic Foundation
    Cleveland, Ohio 44195, United States
    • Courtney Cannon · Contact · CANNONC2@ccf.org · 216-444-1057
    • Sean Nagel, MD · Principal investigator
    Recruiting
  • Miami Valley Hospital
    Fairborn, Ohio 45324, United States
    Recruiting
  • University of Dundee
    Dundee, Scotland DD1 9SY, United Kingdom
    Recruiting
07

Registry details

Key details

Study ID
NCT04991831
Lead sponsor
InSightec
Responsible party
Sponsor
First posted
Aug 5, 2021
Start date
Apr 28, 2022
Primary completion
Dec 2027 (estimated)
Completion
Dec 2027 (estimated)
Last update
Mar 20, 2026

Study contacts

Matt Hibert
Contact
clinicalresearchquestions@insightec.com
214-630-2000

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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