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Parkinson DiseaseNCT02885194

Impact of Subthalamic Nucleus Deep Brain Stimulation on Pain in Parkinson Disease

A study testing Laser-Evoked potential in people with Parkinson Disease, run by Hospices Civils de Lyon at 1 site in France.

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

Pain is a common symptom of Parkinson's disease (PD) but the physiology remains poorly understood. Recent work suggests that subthalamic nucleus deep brain stimulation (STN-DBS) could make a profit on the pain in PD. The investigator would drive a study with a follow up of PD patients before and after STN-DBS. Read more about this study

Who is it for?
Ages 30 to 70 yearsHealthy volunteers can take part
Conditions the study is for
Parkinson Disease
What is being tested?
Laser-Evoked potential
Could I receive a placebo?
No, everyone receives an active treatment
How many people
26 participants
Where
1 siteFrance
Study dates
Jan 2015to May 2016
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 30 to 70 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • A patient with idiopathic Parkinson's disease
  • Age between 30 and 70 inclusive.
  • No cognitive decline (MMS greater than or equal to 24)
  • Normal brain MRI
  • Informed consent signed
  • With or without pain sensation

Who cannot join

  • Presence of other neurological pathology that could explain the pain.
  • MMS less than 24
  • Pregnant or breastfeeding women

Trial locations and contacts

1 site in 1 country.

France1 site
  • Service de Neurologie C, Hôpital Neurologique, HCL

    Bron, 69500

Other trials in France

About this study

Official title: Impact of Subthalamic Nucleus Deep Brain Stimulation on Pain in Parkinson Disease : Clinical and Neurophysiological Study

Pain is a common symptom of Parkinson's disease (PD) but the physiology remains poorly understood. Recent work suggests that subthalamic nucleus deep brain stimulation (STN-DBS) could make a profit on the pain in PD.

The investigator would drive a study with a follow up of PD patients before and after STN-DBS. The pain will be clinically explored by targeted questionnaires and electrophysiological through laser evoked potentials.

The questionnaires are designed to quantify and characterize the pain in these patients. Laser evoked potentials will, through repetitive stimulation, study both the functional status of the afferent nociceptive pathways, their habituation to repetitive nociceptive stimuli, and so better understand any abnormalities of the central processing of nociceptive information.

Being tested
Laser-Evoked potential
Keywords
Parkinson Disease, Pain, Deep Brain Stimulation, Laser-Evoked Potentials
Medical subject headings
Parkinson Disease, Pain

What participants receive

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

  • Laser-Evoked potentialOther

    Laser-Evoked potential can document lesions of spinothalamic tract and lateral brainstem and of thalamo-cortical projections conducting nociceptive signals. The rapid heating of skin by infrared laser pulses stimulate small fibers sensory pathways. The main cortical laser evoked potential is a complex of components N2-P2. Evaluation of the registered potentials includes shape, latency and amplitude.

Study groups in NCT02885194
Study groupRoleWhat they receive
Patients who underwent Deep Brain Stimulation (DBS)OtherPatients who underwent Subthalamic Nucleus (STN)-DBS at Lyon
Receives: Other: Laser-Evoked potential

What is being measured

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

  1. Modification of habituation in percentage, between tests performed before and after DBS

    The habituation is the change of amplitude between the first and the second response of the double stimulation during the laser evoked potential. We calculated a percentage

    Measured: After the second laser evoked potential which occurred around 3 months after STN-DBS

Secondary outcomes (2)
  1. Change in latency of laser evoked potential responses before and after DBS

    latency is calculated in millisecond

    Measured: After the second laser evoked potential which occurred around 3 months after STN-DBS

  2. Change in amplitude of laser evoked potential responses before and after DBS

    amplitude is calculated in microvolts

    Measured: After the second laser evoked potential which occurred around 3 months after STN-DBS

Timeline

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

  1. First posted31 Aug 2016 (estimated)
  2. Study startJan 2015
  3. Primary completionMay 2016
  4. Study completionMay 2016

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
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
26 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02885194
Sponsor's protocol ID
2014.866
Status last verified
Oct 2016
First submitted
26 Aug 2016
Last updated
13 Oct 2016
Results posted
No
Data monitoring committee
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A study testing Laser-Evoked potential in people with Parkinson Disease, run by Hospices Civils de Lyon at 1 site in France.

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 3 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 13 Oct 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 France. 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. 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 is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Modification of habituation in percentage, between tests performed before and after DBS (time frame: After the second laser evoked potential which occurred around 3 months after STN-DBS). 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 13 Oct 2016.

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