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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT03952117
Other study ID # LAUMCRH.RA3.11/Apr/2019
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date July 19, 2019
Est. completion date October 2021

Study information

Verified date August 2019
Source Lebanese American University
Contact Naji Riachi, MD
Phone 009611200800
Email Naji.riachi@lau.edu.lb
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The current research is aimed at using Transcranial Direct Current Stimulation (tDCS) as complementary therapeutic tool in the treatment of essential tremor. Patients will be randomized into two groups (tDCS-cathode vs. tDCS-sham) according to detailed protocol. Main outcome will be measured by the change in tremor amplitude using an accelerometer pre and post cathodal tDCS of the motor cortex.

A total of 40 patients ought to be enrolled as specified in methodology. Secondary outcomes will assess TRG essential tremor rating assessment scale (TETRAS) as well as clinical monitoring.


Description:

Essential tremor (ET) is a common progressive neurological disorder and is the most common movement disorder. Worldwide , up to 5% of the population suffer from this disorder with an increased incidence with advanced age.

The proposed mechanism that underlies ET, the central oscillating network, is mainly composed of the olivocerebellar system, thalamus and motor cortex. An interruption in this circuit limits the ability of the cortex to reorganize and restore ET. a case of 76 year old female with essential tremor that disappeared following a cortico-subcortical prerolandic stroke despite complete motor recovery highlights the role of the motor cortex in the production and possible therapeutic role of the transcranial direct current stimulation.

Study design A randomized, sham-controlled, double blind and crossover study.

Study procedure:

The first visit is an inclusion visit Prior to starting the first tDCS session, the patient will be asked to fill his/her first TRG essential tremor assessment (TETRAS) scale. The physician will then quantitatively analyze the tremor on the most affected side using an accelerometer. Cathodal tDCS will be administered on the area representing the primary motor cortex and the anode over the contralateral supraorbital area. tDCS stimulation (cathodal and sham) will be done daily for 5 consecutive days during weeks 1 and 5. Each stimulation session will last 30 minutes. tDCS will be performed while the patient is at rest, without any concurrent cognitive or motor task.The two tDCS sessions will be separated by a 23 day washout period.

Patient will be asked to fill out their TETRAS at days 1 and 5 of each tDCS session (cathodal and sham), and days 12 and 19 after each tDCS session (cathodal and sham).

Accelerometer assessment of the tremor will be performed at days 1 and 5 of each tDCS stimulation session (cathodal and sham).


Recruitment information / eligibility

Status Recruiting
Enrollment 40
Est. completion date October 2021
Est. primary completion date June 2021
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Patients who fulfil the 2017 Movement society concusses statement criteria for essential tremor

Exclusion Criteria:

- Isolated focal tremor (voice, head)

- Orthostatic tremor with a frequency of more than 12 Hz

- Task and position specific tremor

- Sudden onset and stepwise deterioration of tremor

- History of substance abuse or dependence in the past

- Co-morbid medical conditions capable of producing or enhancing tremors

- Use of a medication with potential effect on tremor

- History of neurological disorders, brain tumors, brain surgery or abnormal neurological examination

- Epileptic disorders

- Cardiac pacemakers

- Metallic hardware in the head or scalp (surgical clips)

- Eczema or skin abrasion at the intended site of stimulation

- Currently pregnant or plan for pregnancy in the next 6 months

- Patients with prior experience with tDCS

- Major psychosocial problems or medical problems rendering informed consent impossible

Study Design


Related Conditions & MeSH terms


Intervention

Device:
transcranial direct current stimulation
tDCS will be administered through a pair of conductive rubber electrodes covered by saline soaked sponges (35 cm2). The current will be delivered continuously at 2 mA for 30 min through a battery-driven constant-current stimulator (Sooma Oy, Helsinki, Finland).

Locations

Country Name City State
Lebanon LAUMCRH Beirut

Sponsors (1)

Lead Sponsor Collaborator
Lebanese American University

Country where clinical trial is conducted

Lebanon, 

Outcome

Type Measure Description Time frame Safety issue
Primary Tremor amplitude Change in tremor amplitude using an accelerometer pre and post cathodal tDCS of the motor cortex. 5 days
Secondary Functional impact of tremor Assess change from baseline of the functional impact of tremor using the TETRAS scale 19 days
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