- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00956514
Neurophysiologic Predictors of Outcome With rTMS Treatment of Major Depressive Disorder
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
A critical challenge in the management of major depressive disorder (MDD) is the selection of treatment for each individual patient. Although treatments with depression can restore people's lives, with any treatment modality there are some individuals who do not achieve complete remission of symptoms, whether the intervention is pharmacological, psychological, or somatic. While predictors for some treatments have been proposed for groups of patients, the translation of these predictors to individualized patient care has remained elusive. In an analysis of data from the NCT 00104611 multi-site, randomized, sham-controlled trial of TMS, it was found that a larger number of prior treatment failures, longer duration of the current episode, and the presence of comorbid anxiety were individual patient characteristics associated with poorer acute outcomes with TMS treatment in the randomized period (Lisanby et al., in press). This publication did not report standard predictor metrics (e.g., sensitivity, specificity, positive- or negative-predictive accuracy, ROC curves), so it is difficult to assess the value of these clinical factors in treatment planning for individual patients. A predictor that could distinguish between individuals likely to remit with TMS versus those likely to need a different intervention would be of great use to clinicians and patients in making treatment decisions.
Our prior work (Cook et al., 2001, 2002, 2005; Leuchter et al. 2002) has studied a new physiologic biomarker of response to SSRI and mixed-action antidepressants. The EEG-based cordance biomarker can detect the physiologic effects of successful antidepressant treatment at 48 hours, 1 week, and 2 weeks of treatment; in contrast, symptom differences between responders and non-responders did not separate until 4 weeks of treatment in our placebo-controlled trials. Additionally, the magnitude of early physiologic change was associated with the completeness of clinical response. Our biomarker has been independently studied and our findings replicated (Kopecek et al., 2006; Bareš et al., 2007, 2008). The cordance biomarker can be considered as a leading indicator or predictor of treatment outcome. As a non-invasive probe of brain physiology, it may detect early neurophysiologic changes associated with accelerated clinical response from TMS.
More recent work with a related EEG-based measure, the Antidepressant Treatment Response Index (ATR) has led to a simplified monitoring system; a physician can record clinically-useful data from a 15-minute in-office procedure with electrodes located on the forehead and ears (Leuchter et al., in submission). The ATR uses physiologic data collected prior to treatment and after one week of exposure, and was shown to be predictive of outcome with antidepressant medication. We are able to assess both cordance and ATR measures with EEG measurements made prior to treatment and after 5 treatment sessions with TMS to evaluate the predictive properties of both metrics.
On a related issue, some of the variation in outcome may be related to treatment factors. Quantitative models and direct in vivo measurements (Wagner et al, 2004, 2008) indicate that the electrical currents induced by TMS are predominantly confined to a brain region directly under the treatment coil. The procedure for positioning the coil over the cortical target is described in the NeuroStar TMS System User Manual (volume 2, sections 6 and 7) and involves first determining a location where stimulation leads to a contraction of the abductor policis brevis muscle (visualized with a thumb twitch on the right hand) and then positioning the coil 5.5 cm anterior to that position along the left Superior Oblique Angle line. While this target can be located with good reproducibility and was associated with therapeutic outcome in the NCT trial, it is not clear that this positions the coil over the best target within the DLPFC for all patients. Indeed, individual differences in gyral anatomy and in gross brain size both add variability to the specific neuroanatomic region being stimulated, and this may impact treatment efficiency.
Exposure to even a brief train of TMS pulses can elicit an acute physiologic change (cf Siebner and Rothwell, 2003), and so a test procedure can be performed that will assess the distance from the standard treatment position to the point eliciting a maximal acute physiologic response. We propose a 9-locus mapping procedure, involving the assessment of changes in brain activity from stimulation at locations including and around the standard treatment target. The nine locations will be the usual treatment location and 8 other points, 1.5 and 3.0 cm anterior, posterior, rostral, and caudal of the primary target. Test stimulation will be for 15 seconds (=150 pulses @ 10 Hz) at each location, followed by 5 minutes of continuous EEG recording to examine acute changes in regional brain activity in response to a brief stimulation exposure. All therapeutic stimulations will take place in the standard location, and we will be able to evaluate what proportion of variance in clinical outcome is explained by distance from the location of maximal acute physiologic response.
Based on these previous studies, we propose to assess patients during treatment with TMS, using clinical symptom ratings and brain physiology with EEG.
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
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California
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Los Angeles, California, United States, 90024-1759
- UCLA Depression Research and Clinic Program
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Outpatients with non-psychotic, unipolar Major Depressive Disorder (MDD) assessed via the MINI structured interview
- A score of ≥ 20 on the HAM-D17 with Item 1 (depressed mood) ≥ 2
- A history of treatment failure with at least one adequate trial of an antidepressant and not more than 2 trials, in the current episode, assessed by the ATHF
- Age range: 18-64.
- Patients with suicidal ideation are eligible only if the thoughts of death or of life not being worth living are not accompanied by a plan or intention for self-harm.
Exclusion Criteria:
- Patient is mentally or legally incapacitated, unable to give informed consent.
- Patients with psychosis (psychotic depression, schizophrenia, or schizoaffective diagnoses (lifetime)); bipolar disorder (lifetime); dementia (lifetime); current MMSE ≤ 24; delirium or substance abuse within the past 6 months; eating disorder within the past year; obsessive-compulsive disorder (lifetime); post-traumatic stress disorder within the past year; acute risk for suicide or self-injurious behavior. Patients with diagnostic uncertainty or ambiguity (e.g. rule-out pseudodementia of depression) will be excluded.
- Patients with exposure to ECT within the past 6 months, previous TMS treatment for any condition, or VNS treatment (lifetime).
- Patients who have met diagnostic criteria for any current substance abuse disorder at any time in the 6 months prior to enrollment.
- Past history of skull fracture; cranial surgery entering the calvarium; space occupying intracranial lesion; stroke, CVA, or TIAs; cerebral aneurysm; Parkinson's or Huntington's disease; or Multiple Sclerosis.
- Any history of intracranial implant; implanted cardiac pacemaker, defibrillator, vagus nerve stimulator, deep brain stimulator; or other implanted devices or objects contraindicated by product labeling.
- current pregnancy, breast feeding, or not using a medically accepted means of contraception.
- Other medical contraindications to any of the study procedures
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Non-Randomized
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Transcranial Magenetic Stimulation
All subjects will be assigned to active, open-label treatment with the NeuroStar TMS System for 6 weeks (30 treatment sessions).
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Neurophysiologic Predictors of Outcome with rTMS Treatment of Major Depressive Disorder
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change in HAM-D17 scale score
Time Frame: baseline, week one, end of week 6
|
baseline, week one, end of week 6
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Change in MADRS scale score
Time Frame: Baseline, week 1, end of week 6
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Baseline, week 1, end of week 6
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Change in IDS-SR30 scale score
Time Frame: baseline, week one, end of week 6
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baseline, week one, end of week 6
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Collaborators and Investigators
Investigators
- Principal Investigator: Ian A Cook, MD, UCLA Depression Research and Clinic Program
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 09-02-045
- IRB# 09-02-045 (Other Identifier: UCLA Medical IRB)
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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