The Efficacy and Prediction of Deep Brain Stimulation for Treatment-resistant Depression

  • STATUS
    Recruiting
  • End date
    Dec 30, 2024
  • participants needed
    34
  • sponsor
    Ruijin Hospital
Updated on 3 June 2022
depression
depressive episode
lithium
selective serotonin reuptake inhibitors
major depressive disorder
brain stimulation

Summary

Several open-label trials have shown the therapeutic promise of deep brain stimulation (DBS) targeted to striatal and surrounding capsular areas in treatment-resistant depression (TRD). However, the results of placebo-controlled trials have been mixed, with one showing a large difference between active and sham DBS and another finding no difference.

Main aim of this study is establishing whether active DBS results in more treatment responders than sham DBS. Secondary aims are establishing an adverse events profile, establishing effects on quality of life,neuropsychological and neuroimaging measures, and finding predictors of response.

Description

Major Depressive Disorder (MDD) is a highly prevalent psychiatric disorder, with an estimated lifetime prevalence of 14.6% across high-income countries.Effective therapeutic options for MDD include psychotherapy, different classes of antidepressants, and electroconvulsive therapy (ECT). Nevertheless, up to 30% of patients do not respond to four consecutive antidepressant strategies and 52% of pharmacotherapy resistant patients do not respond to ECT.Such patients are designated an advanced stage of Treatment Resistant Depression (TRD), which is associated with more hospitalizations, more suicide attempts, and higher costs than non-TRD patients.

Deep Brain Stimulation (DBS) is a promising therapeutic option for TRD patients. DBS consists of implanting electrodes in specific brain areas and then optimizing stimulation parameters (e.g. voltage, frequency, pulse width) to modulate brain activity of the targeted area. Since 2005, several open label trials have reported promising effects of DBS in TRD, targeting different brain structures involved in the neurobiology of MDD: the Subcallosal Cingulate Gyrus (SCG),Medial Forebrain Bundle (MFB),Ventral Capsule/Ventral Striatum (VC/VS), and Nucleus Accumbens (NAc). Response rates, defined as a symptom decrease of at least 50%, range from 30% to 90% with most studies finding a response rate around 50%.

However, results of the first two randomized trials are mixed. The first randomized, controlled trial (RCT) of VC/VS DBS in TRD did not find differences in response rates following active (3 of 14 patients) or sham stimulation (2 of 15 patients) after four months of stimulation. In contrast, our group found a strong antidepressant effect in 16 patients with TRD following active ventral Anterior Limb of the Internal Capsule (vALIC) DBS compared to sham stimulation in a randomized crossover phase.

Therefore, this trial aims to establishing whether active DBS results in more treatment responders than sham DBS. Secondary aims are establishing an adverse events profile, establishing effects on quality of life,neuropsychological and neuroimaging measures, and finding predictors of response.

Details
Condition Major Depressive Disorder, Deep Brain Stimulation
Treatment Deep brain stimulation(Active), Deep brain stimulation(sham)
Clinical Study IdentifierNCT04530942
SponsorRuijin Hospital
Last Modified on3 June 2022

Eligibility

Yes No Not Sure

Inclusion Criteria

Primary diagnosis: Major Depressive Disorder according to the ICD-10 criteria based on a psychiatric interview
Age: 18-65 years old
HAMD-17 total ≥17
Chronic illness with current episode ≥ 24 months duration and/or Illness with at least a total of 4 lifetime episodes (including current episode≥ 12 months) and a minimum of 5 years since the onset of the first depressive episode
Treatment refractory defined as failure of: at least 3 adequate treatments from at least two distinctly different classes (SSRI, SNRI, NaSSA, TCA +, lithium-addition) for a period of 6-8 weeks or more weeks. Adequate psychotherapy. At least 1 session of ECT, for which the series of ECT was terminated either due to adverse effects or insufficient response (including at least 6 sessions of bilateral ECT); unavailable, rejective or intolerable to ECT
remain stable with the current anti-depressive medicine for the last month
Able and willing to give written informed consent
Able to fully understand the consequences of the procedure

Exclusion Criteria

Schizophrenia /history of psychosis unrelated to MDD
Severe personality disorder (assessed by SCID-II)
Abnormal brain MRI
Neurological disease (e.g., Parkinson's disease)
Previous sterosurgery
Any medical contraindication to surgery
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