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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01095263
Other study ID # BSG-10-4711DBS
Secondary ID
Status Completed
Phase Phase 1
First received
Last updated
Start date April 2011
Est. completion date January 2013

Study information

Verified date August 2018
Source University Hospital, Bonn
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The investigators will investigate in a sham controlled design antidepressant effects and safety of DBS to the superolateral branch of the main medial forebrain bundle (slMFB).


Description:

The target point for DBS in major depression disorder is located lateral to the ventral tegmental area (VTA) in the midbrain at the branching point of the superolateral branch (slMFB) from the main medial forebrain bundle (MFB).

The exact stimulation coordinates are:

MNI152 coordinates:

left: x(lat.)=-5, y(ap)=-14, z(vert.)=-8 right: x(lat.)=5, y(ap)=-14, z(vert.)=-9

MCP coordinates:

eft: x(lat.)=-6, y(ap)=-1, z(vert.)=-6 right: x(lat.)=4, y(ap)=-1, z(vert.)=-7

All coordinates refer to the MNI152 brain. Legend: slMFB = superolateral branch of medial forebrain bundle, MNI152=Montreal Neurologic Institute brain 152 coordinates, MCP = mid-commissural point coordinates, lat. = lateral, ap= antero-posterior, vert. = vertical.

More information can be found at: http://goo.gl/n9sWV

In addition to the described intervention, we will record EEG activity within the implanted regions during cognitive paradigms (Fell and Axmacher, Nat Rev Neurosci 2011). Specifically, we will investigate the neural mechanisms underlying classification learning, working memory and exploration of rewarded spatial locations and explore oscillatory responses following stimulation of the target regions. These experimental paradigms will be conducted on the first day after electrode implantation.


Recruitment information / eligibility

Status Completed
Enrollment 7
Est. completion date January 2013
Est. primary completion date August 2012
Accepts healthy volunteers No
Gender All
Age group 20 Years to 70 Years
Eligibility Inclusion Criteria:

- Major depression (MD), severe, unipolar type

- German mother tongue

- Hamilton Depression Rating Scale (HDRS24) score of > 20

- Global Assessment of Function (GAF) score of < 45

- At least 4 episodes of MD or chronic episode > 2 years

- > 5 years after first episode of MD

- Failure to respond to

- adequate trials (>5 weeks at the maximum recommended or tolerated dose) of primary antidepressants from at least 3 different classes;

- adequate trials (>3 weeks at the usually recommended or maximum tolerated dose) of augmentation/combination of a primary antidepressant using at least 2 different augmenting/combination agents (lithium, T3, stimulants, neuroleptics, anticonvulsants, buspirone, or a second primary antidepressant);

- an adequate trial of electroconvulsive therapy [ECT] (>6 bilateral treatments) and;

- an adequate trial of individual psychotherapy (>20 sessions with an experienced psychotherapist).

- Able to give written informed consent

- No medical comorbidity

- Drug free or on stable drug regimen at least 6 weeks before study entry

Exclusion Criteria:

- Current or past nonaffective psychotic disorder

- Any current clinically significant neurological disorder or medical illness affecting brain function, other than motor tics or Gilles de la Tourette syndrome

- Any clinically significant abnormality on preoperative magnetic resonance imaging (MRI)

- Any surgical contraindications to undergoing DBS

- Current or unstably remitted substance abuse (aside from nicotine)

- Pregnancy and women of childbearing age not using effective contraception

- History of severe personality disorder

Study Design


Intervention

Device:
DBS
130Hz, 90us pulsewidth, 4V Amplitude
No Stimulation (Sham)
130Hz, 90us pulsewidth, 0V Amplitude

Locations

Country Name City State
Germany University Hospital Bonn Bonn

Sponsors (1)

Lead Sponsor Collaborator
University Hospital, Bonn

Country where clinical trial is conducted

Germany, 

References & Publications (4)

Coenen VA, Mädler B, Schlaepfer TE. Reply to: medial forebrain bundle stimulation-speed access to an old or entry into a new depression neurocircuit? Biol Psychiatry. 2013 Dec 15;74(12):e45-6. doi: 10.1016/j.biopsych.2013.06.017. Epub 2013 Aug 2. — View Citation

Coenen VA, Schlaepfer TE, Allert N, Mädler B. Diffusion tensor imaging and neuromodulation: DTI as key technology for deep brain stimulation. Int Rev Neurobiol. 2012;107:207-34. doi: 10.1016/B978-0-12-404706-8.00011-5. Review. — View Citation

Coenen VA, Schlaepfer TE, Maedler B, Panksepp J. Cross-species affective functions of the medial forebrain bundle-implications for the treatment of affective pain and depression in humans. Neurosci Biobehav Rev. 2011 Oct;35(9):1971-81. doi: 10.1016/j.neubiorev.2010.12.009. Epub 2010 Dec 22. Review. — View Citation

Schlaepfer TE, Bewernick BH, Kayser S, Mädler B, Coenen VA. Rapid effects of deep brain stimulation for treatment-resistant major depression. Biol Psychiatry. 2013 Jun 15;73(12):1204-12. doi: 10.1016/j.biopsych.2013.01.034. Epub 2013 Apr 3. Review. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Depression Severity assessed with Montgomery Asberg Depression Scale (MADRS) Change in MADRS after 12 months as compared to mean baseline score. MADRS is a ten-item diagnostic questionnaire which psychiatrists use to measure the severity of depressive episodes in patients with mood disorders. It is used as an adjunct to the Hamilton Rating Scale for Depression (HAMD) and more sensitive to the changes in depression than the Hamilton Scale is.
MADRS will be rated 3 times for baseline assessment, weekly during parameter optimization and monthly during follow-up. Reduction compared to baseline will be assessed after 12 months of DBS.
12 month after DBS stimulation onset
Secondary Depression Severity rated with Hamilton Depression Rating Scale (HDRS24) The Hamilton Rating Scale for Depression (HRSD), also known as the Hamilton Depression Rating Scale (HDRS) or abbreviated to HAM-D, is a multiple choice questionnaire that clinicians may use to rate the severity of a patient's major depression. The questionnaire rates the severity of symptoms observed in depression such as low mood, insomnia, agitation, anxiety and weight loss. The questionnaire is presently one of the most commonly used scales for rating depression in medical research.
Measures will be taken at same time points as primary outcome measure.
12 month after DBS stimulation onset
Secondary Adverse Event Schedule Adverse events will be recorded during the study using a structured questionnaire. All possible AEs are assessed in severity, duration and actions taken. 12 months after stimulation onset results will be compiled and rated as being due to the surgical procedure, device, or stimulation. SAEs will be discussed individually if a modification of study protocol is required. 12 month after DBS stimulation onset
Secondary Comprehensive neuropsychological test battery 12 month after DBS stimulation onset
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