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HealthyNCT01490021

Influence of Repetitive Transcranial Magnetic Stimulation (rTMS) Challenge on Cognitive and Functional Magnetic Resonance Imaging Markers in Healthy Subjects

A study testing rTMS/Active TBS in people with Healthy, run by Qualissima at 1 site in Spain.

Terminated

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

Official record
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Trial summary

Episodic and working memory processes are the most affected cognitive domains in Alzheimer's Disease (AD) and its early stage, Mild Cognitive Impairment (MCI). Transcranial Magnetic Stimulation (TMS) is a unique tool to interfere with cognitive processes by inducing "virtual and transient lesions", mimicking those… Read more about this study

Who is it for?
Ages 18 to 40 years, men onlyHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
rTMS/Active TBS
Type of treatment
Surgery or procedure
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
14 participants
Where
1 siteSpain
Study dates
Dec 2011to Dec 2012
Phase
Interventional
Are there results?
None posted in the registry

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 40 years
  • Men only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Demography
  • Healthy male subjects aged between 18 and 40 years-old inclusive.
  • BMI between 18 kg/m2 to 29 kg/m2.
  • Education level: at least secondary.
  • Right-handed (Edinburgh Handedness Inventory).
  • Health status
Show all 16Show fewer
  • The subjects is in good health on the basis of the medical interview (medical history, symptoms) and the physical examination, vital signs.
  • No history of psychiatric or neurological disorders as assessed by Structured Clinical Interview for DSM IV Disorders (SCID).
  • No history of concussion with loss of consciousness more than 20 min.
  • No history of drug or alcohol abuse.
  • Specific to the study
  • The subject can complete the neuropsychological test battery during the training session.
  • Regulations
  • The subject is able to read and understand the Information Form and comply with the protocol instructions and restrictions
  • The subject is covered by a social insurance
  • The subject have provided written informed consent

Who cannot join

  • Medical history and clinical status
  • History or presence of psychiatric illness (Psychiatric interview).
  • History or presence of neurologic illness.
  • General conditions 3. The subject, in the opinion of the investigator, is unlikely to comply with the study protocol or is unsuitable for any other reason.
  • 4. The subject participates in another clinical trial or is still being within a washout period of 1 month since last taking of a previous clinical trial, or subjects who have received more than 4500 Euros in the previous 12 months for participating in clinical trials.
  • Specific to the study 5. Presence of metallic objects within the head. 6. Subjects with pacemaker. 7. Claustrophobia. 8. Individual and familial history of seizure. 9. Any medication listed in the safety guidelines published by the Safety of TMS Consensus Group (Rossi et al., 2009) will be forbidden.

Trial locations and contacts

1 site in 1 country.

Spain1 site
  • IDIBAPS

    Barcelona

Other trials in Spain

About this study

Episodic and working memory processes are the most affected cognitive domains in Alzheimer's Disease (AD) and its early stage, Mild Cognitive Impairment (MCI). Transcranial Magnetic Stimulation (TMS) is a unique tool to interfere with cognitive processes by inducing "virtual and transient lesions", mimicking those observed in MCI. It has proven repeatedly its capacity to interfere with encoding-retrieval memory task. However, to date, only few imaging data exist on the cerebral pathways involved in encoding memory task. Moreover, the stability of TMS effects over time remains to be investigated. If proven to be a stable interfering challenge, TMS could be used to investigate the potential restoring effect of new medication in AD.

The study is the pilot study of a larger clinical trial which aims to prove the utility of rTMS as a potential model for prediction of clinical efficacy using a combination of cognitive and neuroimaging endpoints.

Read the detailed description

Episodic and working memory processes are the most affected cognitive domains in Alzheimer's Disease (AD) and its early stage, Mild Cognitive Impairment (MCI). Transcranial Magnetic Stimulation (TMS) is a unique tool to interfere with cognitive processes by inducing "virtual and transient lesions", mimicking those observed in MCI. It has proven repeatedly its capacity to interfere with encoding-retrieval memory task. However, to date, only few imaging data exist on the cerebral pathways involved in encoding memory task. Moreover, the stability of TMS effects over time remains to be investigated. If proven to be a stable interfering challenge, TMS could be used to investigate the potential restoring effect of new medication in AD.

The study is the pilot study of a larger clinical trial which aims to prove the utility of rTMS as a potential model for prediction of clinical efficacy using a combination of cognitive and neuroimaging endpoints.

This pilot study specifically aims:

  • to determine the cerebral region to stimulate using functional neuronavigation,
  • to evaluate the effects of rTMS on behavioral and functional imaging data (functional Magnetic Resonance Imaging, fMRI)
  • to investigate the stability of the TMS interfering effects by replicating the experimental day up to 4 times.

The study is composed of two parts:

  • Part A: on Day 1, the subjects will perform the episodic memory task in the MRI scanner to determine individual main activations. The mean activation peak obtained by a group analysis will be used as the target coordinates during the part B. Two weeks later, on Day 2, the subjects will repeat the episodic memory task in the MRI scanner. The BOLD signal changes will be compared between Day 1 and Day 2 to investigate the stability of the activations elicited by the memory task.
  • Part B: subjects will randomly be assigned to Group 1 or 2.
  • GROUP 1: The subjects will come on 4 different days. On each day, the subjects will perform the episodic memory task while being actively stimulated using rTMS over L-DLPFC and Vertex (control region) in random order and will undergo an fMRI session on Day 1 and Day 2. Later, they will undergo another set of behavioral tasks from the CANTAB battery and will be stimulated by rTMS using a placebo coil.
  • GROUP 2: The subjects will come on 4 different days. On each day, the subjects will perform the episodic memory task while being actively stimulated using rTMS over L-DLPFC and Vertex (control region) in random order and will undergo an fMRI session on Day 1 and Day 2. Later, they will undergo another set of behavioral tasks from the CANTAB battery and will be stimulated by rTMS using an active coil.

Total expected number of subjects:

34 subjects for the Parts A and B PART A: 10 subjects PART B: 24 subjects (12 per group)

Conditions
Healthy
Being tested
rTMS/Active TBS, rTMS/Placebo TBS
Keywords
Healthy young men

What participants receive

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

  • rTMS/Active TBSProcedure or surgery

    A continuous Theta-Burst Stimulation (TBS) protocol will be applied over the left dorsolateral prefrontal cortex. Three stimuli at 50Hz, 80% of individual Motor Threshold will be repeated every 200ms for 40sec (Galea et al., 2010; Oberman and Pascual-Leone, 2009).

  • rTMS/Placebo TBSProcedure or surgery

    rTMS/Placebo TBS

Study groups in NCT01490021
Study groupRoleWhat they receive
rTMS/Active TBSExperimentalA continuous Theta-Burst Stimulation (TBS) protocol will be applied over the left dorsolateral prefrontal cortex. Three stimuli at 50Hz, 80% of individual Motor Threshold will be repeated every 200ms for 40sec (Galea et al., 2010; Oberman and Pascual-Leone, 2009).
Receives: Procedure: rTMS/Active TBS
rTMS/Placebo TBSPlacebo comparatorrTMS/Placebo TBS
Receives: Procedure: rTMS/Placebo TBS

What is being measured

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

  1. Part A: Location of cerebral activities

    Primary endpoints:

    The location of cerebral activities elicited by the retrieval session of the episodic memory task during fMRI will be the primary endpoint of PART A.

    PART A will assess task-elicited BOLD signal modifications and determine the target location coordinates and verify the stability of the BOLD signal responses over time and the stability of the target location

    Measured: Day 1

  2. Part B: Outputs of the memory task

    Outputs: the number of correct answers during the retrieval blocks (Hit rates)and the number of false recognition of novel pictures (False Alarms rate).

    Measured: Change between Day 2 and Day 1

Secondary outcomes (2)
  1. Part A: The outputs of the memory task

    Memory task. The output of the task will be the number of correct answers during the retrieval blocks (i.e. correctly recognized images presented during the encoding blocks, Hits rate) and the number of false recognition of novel pictures (False Alarms rate).

    Measured: Day 1 and Day 2

  2. Part B: Imaging and CANTAB tasks

    Imaging (functional MRI): Modifications will be highlighted by changes in the Blood-Oxygen-Level Dependence (BOLD) signal patterns.

    CANTAB tasks:

    • CANTAB / Rapid Visual Information Processing (RVP) with outcome measures: latency, probabilities and sensitivity and hits, misses, false alarms and rejections;
    • CANTAB / Spatial Working Memory (SWM) with outcome measures: errors, strategy and latency measures.
    • CANTAB / Paired Associates Learning (PAL) with outcome measures: errors, number of trials required to locate the pattern(s) correctly, memory scores.

    Measured: Day 1, 2, 3 and 4

Timeline

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

  1. First posted12 Dec 2011 (estimated)
  2. Study startDec 2011
  3. Primary completionDec 2012
  4. Study completionDec 2012

Why it stopped: Study stopped for scientific reasons. Another study with a new design is in course of authorization and implementation

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
Basic science
Allocation
Randomised
Intervention model
Crossover
Masking
Single blind
Who is masked
Participant
Enrolment
14 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01490021
Sponsor's protocol ID
WP1P002
Status last verified
May 2013
First submitted
28 Nov 2011
Last updated
15 May 2013
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A study testing rTMS/Active TBS in people with Healthy, run by Qualissima at 1 site in Spain.

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 16 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 15 May 2013. 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 Spain. 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?

The study was stopped early (reason given: Study stopped for scientific reasons. Another study with a new design is in course of authorization and implementation). Results are not available in the source record.

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?

Part A: Location of cerebral activities (time frame: Day 1). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 15 May 2013.

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