NCT02470377

Brief Summary

The goal of this study is to determine whether external neuromodulation using repetitive transcranial magnetic stimulation (rTMS) can reduce the perception of self-motion that is experienced by individuals with mal de debarquement syndrome (MdDS). Mal de debarquement is translated as the "sickness of disembarkment," and refers to the chronic feeling of rocking dizziness that occurs after exposure to passive motion. Treatment for MdDS is limited and morbidity is high. The goal of the study is to determine whether rTMS can suppress the rocking dizziness of MdDS.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
24

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Aug 2015

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

June 9, 2015

Completed
3 days until next milestone

First Posted

Study publicly available on registry

June 12, 2015

Completed
2 months until next milestone

Study Start

First participant enrolled

August 1, 2015

Completed
1.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2017

Completed
5.2 years until next milestone

Results Posted

Study results publicly available

August 31, 2022

Completed
Last Updated

August 31, 2022

Status Verified

August 1, 2022

Enrollment Period

1.9 years

First QC Date

June 9, 2015

Results QC Date

March 3, 2022

Last Update Submit

August 9, 2022

Conditions

Keywords

MdDSTMSfMRIEEG

Outcome Measures

Primary Outcomes (1)

  • Dizziness Handicap Inventory

    The Dizziness Handicap Inventory is a widely used measure of subjective dizziness in which 25 questions of dizziness inducing events are rated on a scale of 0-2-4. The maximum number of points is 100 points which are divided into the following levels: 16-34 Points (mild handicap), 36-52 Points (moderate handicap), 54+ Points (severe handicap).

    10 weeks (4 pre stimulation + 6 post stimulation)

Secondary Outcomes (2)

  • Mal de Debarquement Balance Rating Scale

    10 weeks (4 pre stimulation + 6 post stimulation)

  • Hospital Anxiety and Depression Scale

    10 weeks (4 pre stimulation + 6 post stimulation)

Study Arms (3)

Target 1: Occipital Cortex

EXPERIMENTAL

After determination of the motor threshold, the TMS coil will be positioned over the midline occipital cortex using MRI guidance and a frameless stereotaxy system. A train of stimulation pulses in continuous theta burst mode will be delivered.

Device: Transcranial Magnetic Stimulation

Target 2: Cerebellar Vermis

EXPERIMENTAL

After determination of the motor threshold, the TMS coil will be positioned over the midline cerebellar vermis using MRI guidance and a frameless stereotaxy system. A train of stimulation pulses in continuous theta burst mode will be delivered.

Device: Transcranial Magnetic Stimulation

Target 3: Cerebellar Hemisphere

ACTIVE COMPARATOR

After determination of the motor threshold, the TMS coil will be positioned over the lateral cerebellar hemisphere using MRI guidance and a frameless stereotaxy system. A train of stimulation pulses in continuous theta burst mode will be delivered.

Device: Transcranial Magnetic Stimulation

Interventions

A form of external neuromodulation using pulsatile magnetic fields on the surface of the head.

Target 1: Occipital CortexTarget 2: Cerebellar VermisTarget 3: Cerebellar Hemisphere

Eligibility Criteria

Age18 Years - 70 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age ≥18 years old
  • Willing and capable of interacting with the informed consent process
  • Primary disorder being a persistent rocking dizziness triggered by passive motion such as from water, land, or air travel and with no other central nervous system or peripheral vestibular disorder determined after appropriate evaluation.

You may not qualify if:

  • Subjects who cannot comply with study conditions.
  • Active psychiatric condition such as mania or psychosis
  • Unstable medical condition
  • Implanted metal anywhere in the body (infusion pumps, pacemakers, metal or shrapnel in the body, deep brain stimulators, aneurysm clips, metal prostheses, joints, rods or plates). Dental fillings are acceptable.
  • Personal history of seizures or a first-degree relative with epilepsy
  • Medications known to lower seizure threshold such as: typical (high-potency) neuroleptics and tricyclic antidepressants: Subjects who take one or a combination of the following drugs will be excluded: imipramine, amitriptyline, doxepin, nortriptyline, maprotiline, chlorpromazine. clozapine, foscarnet, ganciclovir, ritonavir, amphetamines, cocaine (including MDMA, ecstasy), phencyclidine (PCP, angel's dust), ketamine, gamma-hydroxybutyrate (GHB), theophylline, haloperidol, fluphenazine, bupropion.
  • Pregnancy or planning to become pregnant during study enrollment.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Minnesota

Minneapolis, Minnesota, 55414, United States

Location

Related Publications (3)

  • Cha YH, Ding L, Yuan H. Neuroimaging Markers of Mal de Debarquement Syndrome. Front Neurol. 2021 Mar 4;12:636224. doi: 10.3389/fneur.2021.636224. eCollection 2021.

  • Cha YH, Gleghorn D, Doudican B. Occipital and Cerebellar Theta Burst Stimulation for Mal De Debarquement Syndrome. Otol Neurotol. 2019 Oct;40(9):e928-e937. doi: 10.1097/MAO.0000000000002341.

  • Chen Y, Cha YH, Gleghorn D, Doudican BC, Shou G, Ding L, Yuan H. Brain network effects by continuous theta burst stimulation in mal de debarquement syndrome: simultaneous EEG and fMRI study. J Neural Eng. 2021 Nov 30;18(6):10.1088/1741-2552/ac314b. doi: 10.1088/1741-2552/ac314b.

MeSH Terms

Conditions

Mal de debarquement

Interventions

Transcranial Magnetic Stimulation

Intervention Hierarchy (Ancestors)

Magnetic Field TherapyTherapeutics

Results Point of Contact

Title
Yoon-Hee Cha
Organization
University of Minnesota

Study Officials

  • Yoon-Hee Cha

    University of Minnesota

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: This was an N-of-1 pilot study in which all participants received one session of each of 3 targets and chose which of the 3 led to the most acute reduction in intensity of rocking. The participants were treated with the target that they chose and then completed post stimulation diaries.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Yoon-Hee Cha, MD

Study Record Dates

First Submitted

June 9, 2015

First Posted

June 12, 2015

Study Start

August 1, 2015

Primary Completion

July 1, 2017

Study Completion

July 1, 2017

Last Updated

August 31, 2022

Results First Posted

August 31, 2022

Record last verified: 2022-08

Data Sharing

IPD Sharing
Will not share

Anonymized data may be shared with other researchers when there is sufficient recruitment to assure that no individual may be identified based on demographic or clinical characteristics.

Locations