Actively Recruiting

Phase Not Applicable
Age: 8Years - 22Years
All Genders
NCT06036199

Focused Ultrasound Pallidotomy for Dyskinetic Cerebral Palsy in Pediatric and Young Adult Subjects

Led by Children's National Research Institute · Updated on 2025-02-11

10

Participants Needed

1

Research Sites

79 weeks

Total Duration

On this page

AI-Summary

What this Trial Is About

The primary objective of the proposed study is to evaluate the safety of ExAblate Transcranial MRgFUS as a tool for creating bilateral or unilateral lesions in the globus pallidus (GPi) in patients with treatment-refractory secondary dystonia due to dyskinetic cerebral palsy

CONDITIONS

Official Title

Focused Ultrasound Pallidotomy for Dyskinetic Cerebral Palsy in Pediatric and Young Adult Subjects

Who Can Participate

Age: 8Years - 22Years
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • The treating physician has chosen GPi-DBS or pallidotomy for the treatment of the secondary dystonia caused by cerebral palsy in this patient
  • Patient and/or legal representative, if the patient is underaged or not capable to give consent himself, have chosen pallidotomy as treatment
  • The consent to participate in the trial of the underaged patient, if he is capable to understand the study requirements, is required
  • Age at enrolment 8-22 years
  • Diagnosis of secondary dystonia due to cerebral palsy caused by perinatal hypoxic injury
  • Anti-dystonic pharmacotherapy insufficient
  • Stable anti-dystonic medication over the last 30 days
  • Globus pallidus internus (pars posterior) and thalamus (motor part) intact on MRI (not older than 2 years - if possible)
  • No fixed severe skeletal deformations with loss of function, which need immediate orthopaedic surgical intervention
  • Sufficient compliance of the patient or the legal representative if the patient is underaged or not capable to give consent himself to take part in the study
  • Informed consent to take part in the study from patient and/or legal representative if the patient is underaged or not capable to give consent himself
  • Patient and/or legal representative if the patient is underaged or not capable to give consent himself, understands the study requirements and the treatment procedures and provides written informed consent before any study-specific tests or procedures are performed
Not Eligible

You will not qualify if you...

  • Patients with known primary (e.g. DYT1) or idiopathic dystonia
  • Severe axial hypotonia with total loss of head control (e.g. absence of control at "upper thoracic level" in the SATCo score) (medication effect excluded)
  • Fixed hemi-dystonia
  • Severe spasticity in knee- and elbow-flexors and -extensors (Modified Ashworth Scale >3)
  • Fixed severe skeletal contractions with loss of function which require immediate orthopaedic surgical intervention
  • Patients with other severe concurrent neurological disease (e. g. brain tumor, neurodegenerative diseases, trauma etc.)
  • Condition likely to require use of MRI in the future
  • Any intracranial abnormality or medical condition that would contraindicate DBS surgery
  • Any findings in neuropsychological screening assessments that would contraindicate DBS surgery
  • Any current drug and / or alcohol abuse
  • Any history of frequent grand-mal seizures without response to anticonvulsive treatment
  • Any other active implanted device (e.g. Cochlear implant, pacemaker), whether turned on or off, would be allowed provided that they do not interfere with functioning of the device.
  • The presence of DBS leads due the risks of these ferromagnetic devices in the MRI environment.
  • A history of neurostimulation intolerance in any area of the body.
  • Currently on any anticoagulant medications that cannot be discontinued during perioperative period.
  • Any significant medical condition that is likely to interfere with study procedures or likely to confound evaluation of study endpoints, including any terminal illness with survival <24 months.
  • Participation in another drug, device, or biologics trial concurrently or within the preceding 30 days; any other trial participation should be approved by the Principal Investigator.
  • A female that is breastfeeding or of childbearing potential with a positive urine pregnancy test or - if a person is sexually active - not using sufficient contraception with a Pearl Index of less than 1% including all forms of hormonal contraception ("antibaby-pill", hormonal plaster, NuvaRing®, Implanon®, hormonal depot injections, contraceptive coil), the tubal ligature (female sterilization). Alternatively, the female of child bearing potential is sexually abstinent.
  • Subjects who have contraindications to anesthesia, in the judgment of the attending anesthesiologist
  • Subjects who are unwilling or unable to undergo general anesthesia
  • Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the subject or the quality of the data.
  • Minimum head circumference < 49cm
  • Skull Density Ratio (SDR) <0.40.

AI-Screening

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Trial Site Locations

Total: 1 location

1

Children's National Hospital

Washington D.C., District of Columbia, United States, 20010

Actively Recruiting

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Research Team

C

Chima Oluigbo, MD

CONTACT

S

Saige Teti

CONTACT

How is the study designed?

Study Type

INTERVENTIONAL

Masking

NONE

Allocation

NA

Model

SINGLE_GROUP

Primary Purpose

TREATMENT

Number of Arms

1

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