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EpilepsyNCT03154307

Repeated TMS at Low Frequencies to Reduce Seizure Occurrence

A study testing Low frequency repeated TMS (LF-rTMS) in people with Epilepsy and Status Epilepticus, run by Baptist Health South Florida at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

Perform non-invasive neuro-navigated repeated Transcranial Magnetic Stimulation (rTMS) at low frequencies (LF) with the intent to reduce the occurrence of seizures over time (long-term protocol). Read more about this study

Who is it for?
Ages 18 to 80 years
What is being tested?
Low frequency repeated TMS (LF-rTMS)
Type of treatment
Medical device
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
2 participants
Where
1 siteUnited States
Study dates
19 Feb 2016to 23 Aug 2019
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Experience ≥ 3 seizures/month in the month prior to starting study (any type of seizure will count)
  • No status epilepticus in the last 12 months
  • No change in medication in last 30 days
  • Epilepsia partialis continua or status epilepticus
  • At least 2 medications failed
  • At least 24 hours of acute phase

Who cannot join

  • Presence of implanted electronic devices (e.g., pacemaker, medication pump, brain or vagus nerve stimulator, cochlear implant)
  • Presence of intracranial metal (e.g., aneurysm clip)
  • Unable to cooperate with non-sedated, navigated TMS testing
  • Short-term protocol:
  • Presence of implanted electronic devices (e.g., pacemaker, medication pump, brain or vagus nerve stimulator, cochlear implant)
  • Presence of intracranial metal (e.g., aneurysm clip)

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Baptist Hospital of Miami

    Miami, Florida, 33176

Other trials in United States

About this study

Perform non-invasive neuro-navigated repeated Transcranial Magnetic Stimulation (rTMS) at low frequencies (LF) with the intent to reduce the occurrence of seizures over time (long-term protocol). Seizure reduction and improvements in the quality of life in patients with epilepsy will be associated with increased cortical inhibition resulting from the LF-rTMS sessions over time. This procedure using rTMS at low frequencies (LF-rTMS) between 0.5 and 1 Hz is a safe and painless method for noninvasive focal cortical brain stimulation, which will be evaluated in its efficacy at reducing/suppressing seizures. Accordingly, we propose a clinical trial in patients with epilepsy to test whether LF-rTMS can improve seizure suppression. The location of the presumed 3D source in the brain will be stimulated for few minutes (10 to 15 min.). With the same rTMS modality, we will also perform motor threshold mapping in conjunction with its fully integrated and compatible electroencephalography (EEG) module. Up to 100 individuals 18 to 80 years with epilepsy will be enrolled.

In addition, a short-term protocol has been added to test whether LF-rTMS can reduce or suppress status epilepticus in medically refractory participants.

Read the detailed description

Long term protocol: Perform non-invasive neuro-navigated repeated Transcranial Magnetic Stimulation (rTMS) at low frequencies (LF) with to reduce the occurrence of seizures over time. Seizure reduction and improvements in the quality of life in patients with epilepsy will be associated with increased cortical inhibition resulting from the LF-rTMS sessions over time. This procedure using rTMS at low frequencies (LF-rTMS) between 0.5 and 1 Hz is a safe and painless method for noninvasive focal cortical brain stimulation, which will be evaluated in its efficacy at reducing/suppressing seizures. Accordingly, we propose a clinical trial in patients with epilepsy to test whether LF-rTMS can improve seizure suppression. The location of the presumed 3D source in the brain will be stimulated for few minutes (10 to 15 min.). Using a double-blinded, sham-controlled design, we will enroll up to 100 participants aged 18-80 with focal and generalized retractable epilepsy. Baseline data will include a detailed seizure diary over 4 weeks, psychometric testing/neuropsychology evaluation, and 20-minute EEG recordings. Each patient will then begin treatment with 14 minute sessions of 1 Hz rTMS or sham rTMS, 120%MT, and 800 stimuli on the position of the calculated 3D source using EEG, MRI, and digitized electrode locations. The protocol will be divided in 3 groups (Groups 1, 2 and 3) as follows:

  • Groups 1, 2, and 3: LF-rTMS for 2 weeks (5 days per week for total of 10 days).
  • Group 1: protocol total duration: 1 year: LF-rTMS 1 session/week for 1 month (4 days), and LF-rTMS 1 session/month for 11 months
  • Group 2: protocol total duration: 1 year: LF-rTMS 1 session/month for 12 months
  • Group 3 (placebo protocol, total duration: 1 year): LF-rTMS 1 session/week for 1 month (4 days); and LF-rTMS 1session/month.

During each session EEG may be recorded. Also, we will obtain the number, frequency, and duration of seizure events from an ongoing seizure diary. Psychometric testing will be performed at the beginning of study, 3 months, and at the end of the study. Thus, each patient will have rTMS testing, psychometrics, and EEG recordings. With the same rTMS modality, we will also perform motor threshold mapping in conjunction with its fully integrated and compatible electroencephalography (EEG) module.

Short-term protocol: Use LF-rTMS protocol as described but for up to 5 days in 10 participants with medically refractory status epilepticus. During each session EEG will be recorded.

Being tested
Low frequency repeated TMS (LF-rTMS)
Medical subject headings
Epilepsy, Status Epilepticus, Epilepsia Partialis Continua

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Low frequency repeated TMS (LF-rTMS)Device

    Each patient will then begin treatment with 14 minute sessions of 1 Hz rTMS or sham rTMS, 120% minimum threshold (MT), and 800 stimuli on the position of the calculated 3D source using EEG, MRI, and digitized electrode locations. Two different timelines of delivering the rTMS will be compared against a sham/delayed treatment group.

Study groups in NCT03154307
Study groupRoleWhat they receive
Group 1: Weekly TMSExperimentalLF-rTMS intervention for 2 weeks (5 days per week for total of 10 days) , LF-rTMS 1 session/week for 1 month (4 days), and LF-rTMS 1 session/month for 11 months
Receives: Device: Low frequency repeated TMS (LF-rTMS)
Group 2: Monthly TMSExperimentalLF-rTMS intervention for 2 weeks (5 days per week for total of 10 days), LF-rTMS 1 session/month for 12 months
Receives: Device: Low frequency repeated TMS (LF-rTMS)
Group 3: Sham TMSSham comparatorSham LF-rTMS for 2 weeks (5 days per week for a total of 10 days), sham LF-rTMS 1 session/week for 1 month (4 days), and sham LF-rTMS 1 session/month for 1 month. After the sham stimulation real LF-rTMS intervention sessions will be delivered as follows: 50% of placebo group will follow group 1 protocol and the other 50% will follow group 2 protocol
Receives: Device: Low frequency repeated TMS (LF-rTMS)
Short-term protocolExperimentalLF-rTMS intervention daily for up to 5 days in medically refractory status epilepticus participants only
Receives: Device: Low frequency repeated TMS (LF-rTMS)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Average Weekly Seizure Frequency

    Seizure frequency was recorded by the caregiver in a journal at weeks 6 and 7 post rTMS treatment.

    Measured: 6 and 7 weeks post rTMS treatment

  2. Scalp EEG: Number of Interictal Epileptiform Discharges

    Interictal discharges are common in those with epilepsy and tends to decrease with treatment.

    Measured: From start of intervention through 5 days of treatment

  3. Seizure Duration Proxy for Seizure Severity

    Care provider journaled the seizure duration over the coure of a 2-week period beginning on week 6 post rTMS treatment.

    Measured: 6-7-weeks post rTMS treatment

Secondary outcomes (5)
  1. Interhemispheric EEG Asymmetry Ratio for Alpha Power

    Expresses the ratio of laterality for the corresponding electrode pairs between the left and right hemispheres, where the left hemisphere electrodes are divided by the right hemisphere electrodes.

    Measured: 8-weeks Post rTMS Treatment

  2. Scalp EEG Functional Connectivity for Alpha Hz

    Standardized functional scalp EEG connection per of region (anterior, posterior, right, and left). Calculations required EEG electrode activity of 80% for a minimum of 20 epochs to be included. All area electrode counts were then divided by the threshold providing a normalized value per brain region. Scalp EEG connectivity was collected 8-weeks post rTMS treatment.

    Measured: 8-weeks Post rTMS Treatment

  3. Abductor Pollicis Brevis (APB)-Evoked Response Threshold

    The motor evoked potential (MEP) will be calculated using the Nexstim system's 6-channel EMG module (SR=1450 Hz, cut-off frequency of 350 Hz for the low pass filter) as the APB is stimulated to find the threshold for each individual. Listed values represent the percentage of the maximum Tesla output of the Nexstim system.

    Measured: 8-weeks Post rTMS treatment

  4. Treatment Response Rate

    Count of subjects whose seizure frequency decreased by 50% after rTMS treatment

    Measured: 8-weeks post rTMS treatment

  5. Intrahemispheric EEG Asymmetry Ratio for Alpha Power

    Expresses the asymmetry power ratio for the corresponding electrode pairs between the posterior and anterior brain regions, where the left posterior electrodes are divided by the anterior electrodes.

    Measured: 8-weeks Post rTMS Treatment

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted16 May 2017
  2. Study start19 Feb 2016
  3. Primary completion23 Aug 2019
  4. Study completion23 Aug 2019

Why it stopped: Low Recruitment

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Outcomes assessor
Enrolment
2 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03154307
Sponsor's protocol ID
15-135
Status last verified
May 2023
First submitted
10 May 2017
Last updated
23 Jun 2023
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes

Publications

  • Kobayashi M, Pascual-Leone A. Transcranial magnetic stimulation in neurology. Lancet Neurol. 2003 Mar;2(3):145-56. doi: 10.1016/s1474-4422(03)00321-1.

    PubMed 12849236
  • Hallett M. Transcranial magnetic stimulation and the human brain. Nature. 2000 Jul 13;406(6792):147-50. doi: 10.1038/35018000.

    PubMed 10910346
  • Rossini PM, Rossi S. Transcranial magnetic stimulation: diagnostic, therapeutic, and research potential. Neurology. 2007 Feb 13;68(7):484-8. doi: 10.1212/01.wnl.0000250268.13789.b2.

    PubMed 17296913
  • Siebner HR, Hartwigsen G, Kassuba T, Rothwell JC. How does transcranial magnetic stimulation modify neuronal activity in the brain? Implications for studies of cognition. Cortex. 2009 Oct;45(9):1035-42. doi: 10.1016/j.cortex.2009.02.007. Epub 2009 Mar 3.

    PubMed 19371866
  • Udupa K, Sathyaprabha TN, Thirthalli J, Kishore KR, Raju TR, Gangadhar BN. Modulation of cardiac autonomic functions in patients with major depression treated with repetitive transcranial magnetic stimulation. J Affect Disord. 2007 Dec;104(1-3):231-6. doi: 10.1016/j.jad.2007.04.002. Epub 2007 May 8.

    PubMed 17490754
  • Fox MD, Liu H, Pascual-Leone A. Identification of reproducible individualized targets for treatment of depression with TMS based on intrinsic connectivity. Neuroimage. 2013 Feb 1;66:151-60. doi: 10.1016/j.neuroimage.2012.10.082. Epub 2012 Nov 7.

    PubMed 23142067
  • Plewnia C, Pasqualetti P, Grosse S, Schlipf S, Wasserka B, Zwissler B, Fallgatter A. Treatment of major depression with bilateral theta burst stimulation: a randomized controlled pilot trial. J Affect Disord. 2014 Mar;156:219-23. doi: 10.1016/j.jad.2013.12.025. Epub 2013 Dec 28.

    PubMed 24411682

Questions about this trial

What is this clinical trial studying?

A study testing Low frequency repeated TMS (LF-rTMS) in people with Epilepsy and Status Epilepticus, run by Baptist Health South Florida at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 23 Jun 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 23 Jun 2023). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Average Weekly Seizure Frequency (time frame: 6 and 7 weeks post rTMS treatment). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03154307, which also lists 7 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Jun 2023; AzTrials last refreshed its copy on 6 Nov 2026.

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