Reclaim Deep Brain Stimulation Clinical Study for Treatment-Resistant Depression
Medtronic, Inc. sponsored an investigational study of the Reclaim™ Deep Brain Stimulation (DBS) System in people that have treatment-resistant depression. Depression is a mood disorder and a serious medical condition that affects millions of Americans. Depressive symptoms may include loss of interest in things typically enjoyed; decreased energy levels; difficulty concentrating or making decisions; restlessness; and feelings of pessimism, hopelessness, and worthlessness. Treatment-resistant depression is a chronic and severe form of depression characterized by failure to respond to traditional forms of treatment, such as antidepressant medications and electroconvulsive therapy. Treatment-resistant depression significantly impacts quality of life, productivity, and is a major contributor of disability world-wide.
This randomized, double-blind, sham stimulation-controlled, multi-center, prospective, parallel design study used deep brain stimulation technology to test whether active bilateral stimulation can safely and effectively improve depressive symptoms in patients with treatment-resistant depression compared to sham stimulation.
Participants meeting criteria for the study were implanted with the Reclaim DBS System. Participants in the active group, who received active stimulation, were compared to the control group, who received sham stimulation, during the 16-week blinded-treatment phase. All participants were monitored for changes in depressive symptoms. After the blinded-treatment phase, all participants received active stimulation.
Candidates for the trial were adults who had major depressive disorder and had not responded to several treatments for depression. Participants in the study continued to receive their current antidepressant medications while participating in the trial.
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||Reclaim Deep Brain Stimulation Clinical Study for Treatment-Resistant Depression|
- Responders [ Time Frame: Baseline to 16 weeks ]Montgomery-Åsberg Depression Rating Scale (MADRS); total score can range from 0 (no symptoms) to 60 (severe depression). Response is defined as at least a 50% improvement (decline) in MADRS score. Responder rate is the proportion of participants who experience response.
- Depression Change [ Time Frame: Baseline to 16 weeks ]Montgomery-Åsberg Depression Rating Scale (MADRS); total score can range from 0 (no symptoms) to 60 (severe depression). Improvement is measured by the groups' mean percent change in MADRS score. An improvement is represented by a decline in MADRS (a negative percent change).
- Quality of Life Change [ Time Frame: Baseline to 16 weeks ]Quality of Life Enjoyment and Satisfaction Questionnaire Short Form (Q-LES-Q-SF); total score can range from 0 to 100 with higher scores indicating a better quality of life. Improvement is measured by the groups' mean change in Q-LES-Q-SF score. An improvement is represented by an increase in Q-LES-Q-SF (a positive change).
- Long-term Open-label Responders [ Time Frame: at the 24-month visit ]This measure is for long-term, open-label stimulation. Response is defined as at least a 50% improvement (decline) in MADRS score. Responder rate is the proportion of participants who experience response. All enrolled participants are included in the analysis, even if they withdrew early. Participants that withdrew early are counted as non-responders.
- Therapy-related Adverse Events [ Time Frame: from enrollment to study closure (average follow-up of 36 months) ]Adverse events related to the device, implant procedure, and/or stimulation are reported. Events with a prevalence of greater than 5% of subjects are reported. This measure describes the experience of all study participants (both Active and Control Groups combined), and includes the operative, blinded-treatment,and the long-term open-label follow-up phases combined. Active Group participants began therapy after randomization, while Control Group participants began therapy after 16 weeks of sham stimulation.
|Study Start Date:||February 2009|
|Study Completion Date:||April 2013|
|Primary Completion Date:||December 2010 (Final data collection date for primary outcome measure)|
Active Comparator: Active Group - Active Stimulation
Receive active stimulation with Reclaim™ DBS System
|Device: Reclaim™ DBS System|
Sham Comparator: Control Group - Sham Stimulation
Receive sham stimulation with Reclaim™ DBS System
|Device: Reclaim™ DBS System|
Please refer to this study by its ClinicalTrials.gov identifier: NCT00837486
|United States, Massachusetts|
|Massachusetts General Hospital|
|Charlestown, Massachusetts, United States, 02129|
|United States, Ohio|
|Cleveland Clinic Foundation|
|Cleveland, Ohio, United States, 44195|
|United States, Pennsylvania|
|University of Pennsylvania|
|Philadelphia, Pennsylvania, United States, 19104|
|University of Pittsburgh Medical Center|
|Pittsburgh, Pennsylvania, United States, 15213|
|United States, Rhode Island|
|Providence, Rhode Island, United States, 02906|