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Cervical DystoniaNCT01859247

Identification of Optimal Stimulation Site for Cervical Dystonia Symptoms: An Exploratory Study

A study testing rTMS in people with Cervical Dystonia and Spasmodic Torticollis, run by University of New Mexico at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The overall objective of this application is to therapeutically target the dysfunctional premotor-motor interaction in dystonia-and to provide a focused treatment of specific anatomical networks in order to reduce side effects and to improve symptom control over conventional therapies. Read more about this study

Who is it for?
Ages 18 to 100 years
Conditions the study is for
Cervical Dystonia, Spasmodic Torticollis
What is being tested?
rTMS
Type of treatment
Medical device
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
8 participants
Where
1 siteUnited States
Study dates
Mar 2013to Jun 2014
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 100 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Clinical diagnosis of idiopathic cervical dystonia
  • Age 18 years or older
  • Normal findings in the medical history, physical and neurological examination, except for dystonia
  • Last treatment with botulinum toxin more than two months ago

Who cannot join

  • History of seizure disorder
  • Pregnancy- a pregnancy test will be performed for women of childbearing potential
  • History of any other neurological disorders or conditions requiring the use of anti-depressants that are known to increase seizure threshold, neuroleptic medication, anticholinergic drugs and muscle relaxants
  • History of neuroleptic medications/ prior use of neuroleptics

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of New Mexico

    Albuquerque, New Mexico, 87131

Other trials in United States

About this study

The overall objective of this application is to therapeutically target the dysfunctional premotor-motor interaction in dystonia-and to provide a focused treatment of specific anatomical networks in order to reduce side effects and to improve symptom control over conventional therapies.

Read the detailed description

We propose using repetitive transcranial magnetic stimulation (rTMS) over distinct premotor areas in patients with cervical dystonia (CD) with the goal of improving symptoms and reducing unwanted side effects. The knowledge gained in this proposed research will identify a specific premotor area to be targeted with rTMS that is expected to result in a novel intervention that could enhance or replace current treatments for CD. rTMS could be included as an adjunct treatment to botulinum toxin that could sustain treatment effect and decrease the frequency of re-injection, potentially resulting in cost savings without a decrease in symptom control. In addition to medical cost reduction, improved quality of life could be expected with the successful development of therapies that extend dystonia symptom control. rTMs has been FDA-approved for the treatment of depression and our proposal uses an even lower stimulation rate, suggesting continued use within clearly safe parameters. Successful completion of this research could lead to rapid adoption of this therapeutic modality.

We will test the hypothesis that rTMS of a distinct premotor site will provide more effective treatment of CD than non-specific activation of the entire premotor region. This will be done by performing a randomized, observer-blinded exploratory pilot study to determine the optimal site of rTMS over various sites of the premotor and motor cortex to improve the symptoms of cervical dystonia. Completion of this aim should lead to development of targeted TMS therapy for CD.

Being tested
rTMS
Keywords
cervical dystonia, torticollis, rTMS
Medical subject headings
Torticollis

What participants receive

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

Study groups in NCT01859247
Study groupRoleWhat they receive
Dorsal Premotor rTMSActive comparator0.2 Hz rTMS for 15 minutes
Receives: Device: rTMS
Primary motor cortex rTMSActive comparator0.2 Hz rTMS for 15 minutes
Receives: Device: rTMS
Supplemental Motor Area rTMSActive comparator0.2 Hz rTMS for 15 minutes
Receives: Device: rTMS
Anterior Cingulate rTMSActive comparator0.2 Hz rTMS for 15 minutes
Receives: Device: rTMS
Sham rTMSSham comparator0.2 Hz rTMS for 15 minutes
Receives: Device: rTMS

What is being measured

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

  1. Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS)

    Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) was used to assess severity of disease. The score for this section ranges from 0 (absence of severity) to 35 (maximum severity).

    Measured: Change from baseline pre-intervention TWSTRS score to post-intervention within 1 hour of treatment

Secondary outcomes (2)
  1. Dorsal Premotor-motor Inhibition (dPMI)

    Measured: Change from baseline dPMI to post-intervention within 1 hour of treatment

  2. Composite Measure of Patient Rating of Symptoms and Tolerability

    This measure will confirm the intervention tolerability by the patient. He/she scored the tolerability from 0-10, 0 being "completely tolerable" and 10 "completely intolerable."

    Measured: Assessment completed immediately after rTMS treatment session

Timeline

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

  1. First posted21 May 2013 (estimated)
  2. Study startMar 2013
  3. Primary completionJun 2014
  4. Study completionJun 2014

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
Crossover
Masking
Double blind
Who is masked
Participant, Outcomes assessor
Enrolment
8 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01859247
Sponsor's protocol ID
UNM 657
Other IDs
U54NS065701
Status last verified
Jun 2016
First submitted
9 May 2013
Last updated
28 Jul 2016
Data monitoring committee
No

Publications

  • Beck S, Houdayer E, Richardson SP, Hallett M. The role of inhibition from the left dorsal premotor cortex in right-sided focal hand dystonia. Brain Stimul. 2009 Oct;2(4):208-14. doi: 10.1016/j.brs.2009.03.004. Epub 2009 May 3.

    PubMed 20633420
  • Breakefield XO, Blood AJ, Li Y, Hallett M, Hanson PI, Standaert DG. The pathophysiological basis of dystonias. Nat Rev Neurosci. 2008 Mar;9(3):222-34. doi: 10.1038/nrn2337.

    PubMed 18285800
  • Lefaucheur JP, Fenelon G, Menard-Lefaucheur I, Wendling S, Nguyen JP. Low-frequency repetitive TMS of premotor cortex can reduce painful axial spasms in generalized secondary dystonia: a pilot study of three patients. Neurophysiol Clin. 2004 Oct;34(3-4):141-5. doi: 10.1016/j.neucli.2004.07.003.

    PubMed 15501683
  • Murase N, Rothwell JC, Kaji R, Urushihara R, Nakamura K, Murayama N, Igasaki T, Sakata-Igasaki M, Mima T, Ikeda A, Shibasaki H. Subthreshold low-frequency repetitive transcranial magnetic stimulation over the premotor cortex modulates writer's cramp. Brain. 2005 Jan;128(Pt 1):104-15. doi: 10.1093/brain/awh315. Epub 2004 Oct 13.

    PubMed 15483042
  • Pirio Richardson S, Tinaz S, Chen R. Repetitive transcranial magnetic stimulation in cervical dystonia: effect of site and repetition in a randomized pilot trial. PLoS One. 2015 Apr 29;10(4):e0124937. doi: 10.1371/journal.pone.0124937. eCollection 2015.

    PubMed 25923718

Questions about this trial

What is this clinical trial studying?

A study testing rTMS in people with Cervical Dystonia and Spasmodic Torticollis, run by University of New Mexico 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 4 inclusion and 4 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: finished, as of the sponsor's last update on 28 Jul 2016. 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 28 Jul 2016). 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?

Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) (time frame: Change from baseline pre-intervention TWSTRS score to post-intervention within 1 hour of treatment). 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 NCT01859247, which also lists 5 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 28 Jul 2016.

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