Efficacy of Convulsive Therapies During Continuation

Not Applicable

Completed

• Conditions: Unipolar Depression; Depression; Bipolar Depression; Treatment Resistant Depression
• Interventions: Device: RUL-UB ECT; Device: Magnetic Seizure Therapy (MST); Device: Bitemporal ECT

• Registration Number: NCT03711019
• Lead Sponsor: Centre for Addiction and Mental Health

Brief Summary

This trial aims to assess the efficacy and tolerability of Magnetic Seizure Therapy (MST) and two different forms of electroconvulsive therapy (ECT) in sustaining response during and after a course of continuation treatment.

Detailed Description

The study will involve a parallel-group clinical trial with three treatment arms conducted at the Centre for Addiction and Mental Health (CAMH) in Toronto, ON, Ontario Shores Centre for Mental Health Sciences in Whitby, ON and University of British Columbia (UBC) Hospital in Vancouver, BC. It will include participants who are classified as responders or remitters in the CREST-MST (NCT03191058) trial, the CORRECT-BD (NCT03641300) trial and individuals responding to bitemporal ECT after participating in either of the above trials, who qualify for a continuation course of convulsive therapy to prevent relapse of depression. Individuals blinded to their acute course of treatment will continue to receive the convulsive therapy to which they responded in in a blinded fashion. Continuation treatments will be scheduled according to a modified version of the Symptom-Titrated Algorithm-based Longitudinal ECT (STABLE) algorithm. STABLE includes an initial four week period of ECT delivered on a fixed schedule (once or twice per week), and then transitions to a symptom-driven schedule whereby ECT is delivered between zero and two times per week based on the patient's weekly Hamilton Rating Scale for Depression (HRSD-24) outcomes during weeks five to 24.

Further, this trial will also include non-responders to MST or right unilateral ultrabrief pulse ECT (RUL-UB ECT) from CREST-MST or CORRECT-BD, who are switched to bitemporal ECT based on their clinical indication. They will receive bitemporal ECT on an acute basis, i.e. 2 - 3 times per week. If their symptoms respond or remit with bitemporal ECT, they will also be offered a continuation course of bitemporal ECT as part of this trial and will be followed in the same manner as those receiving MST or RUL-UB ECT.

Study Timeline

• Study First Submitted: 2018-10-12
• Study First Submitted QC: 2018-10-17
• Study First Posted: 2018-10-18
• Study Start: 2018-10-22
• Primary Completion: 2024-10-10
• Study Completion: 2024-10-10
• Status Verified: 2024-11
• Last Update Submitted: 2024-11-01
• Last Update Posted: 2024-11-04

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 106

Inclusion Criteria

1. are inpatients or outpatients;
2. are voluntary and competent to consent to treatment and research procedures according to ECT/MST attending psychiatrist;
3. have met diagnostic criteria as assessed by MINI V6.0 in CREST-MST or CORRECT-BD
4. are 18 years of age or older
5. achieve remission defined as HRSD-24 < 10 and a > 60% decrease in scores from baseline on two consecutive ratings OR achieve response on HRSD-24 defined as a 50% reduction in symptoms from baseline;
6. are considered to be appropriate to receive convulsive therapy as assessed by an ECT attending psychiatrist and a consultant anaesthesiologist
7. are agreeable to keeping their current antidepressant treatment constant during the intervention;
8. are likely able to adhere to the intervention schedule;
9. meet the MST safety criteria;
10. If a woman of child-bearing potential: is willing to provide a negative pregnancy test and agrees not to become pregnant during trial participation.

Exclusion Criteria

1. have a concomitant major unstable medical illness;
2. are pregnant or intend to get pregnant during the study;
3. have probable dementia based on study investigator assessment;
4. have any significant neurological disorder or condition likely to be associated with increased intracranial pressure or a space occupying brain lesion, e.g., cerebral aneurysm;
5. present with a medical condition, a medication, or a laboratory abnormality that could cause a major depressive episode or significant cognitive impairment in the opinion of the investigator (e.g., hypothyroidism with low TSH, rheumatoid arthritis requiring high dose prednisone, or Cushing's disease);
6. have an intracranial implant (e.g., aneurysm clips, shunts, stimulators, cochlear implants, or electrodes) or any other metal object within or near the head, excluding the mouth, that cannot be safely removed;
7. require a benzodiazepine with dose greater than lorazepam 2 mg/day or equivalent or any anticonvulsant due to the potential of these medications to limit the efficacy of both MST and ECT;
8. are unable to communicate in English fluently enough to complete the neuropsychological tests;
9. have a non-correctable clinically significant sensory impairment (i.e., cannot hear or see well enough to complete the neuropsychological tests)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
RUL-UB ECT	RUL-UB ECT	ECT treatments will be administered using the MECTA spECTrum 5000Q or MECTA Sigma
Magnetic Seizure Therapy (MST)	Magnetic Seizure Therapy (MST)	MST treatments will be administered using the MagPro MST with Cool TwinCoil.
Bitemporal ECT	Bitemporal ECT	ECT treatments will be administered using the MECTA spECTrum 5000Q or MECTA Sigma

Primary Outcome Measures

Name	Time	Method
Difference in HRSD-24 Scores between MST and RUL-UB at 6 months	6 months	Hamilton Rating Scale for Depression (24-item version): * This scale is used to quantify the severity of symptoms of depression; * Scale range: 0-76 (total score); * Lower scores indicate lower severity of depressive symptoms (i.e., better outcome); * Higher scores indicate higher severity of depressive symptoms (i.e., worse outcome); Non-inferiority trials such as this proposed study specify a non-inferiority margin, with a tolerance of 3.9 points denoting equivalence between the two treatments when the efficacy of MST can be concluded to be not more than 3.9 points on the HRSD-24 at the endpoint of treatment.
Cognitive adverse effects as indexed by the Autobiographical Memory Test (AMT)	6 months	Autobiographical Memory Test: * Interviewer-rated measure with 10 items that indexes autobiographical memory recall and specificity.; * The binary outcome is defined as a worsening of \> 25% on the AMT total score.

Secondary Outcome Measures

Name	Time	Method
Differences in relapse status between MST, RUL-UB ECT and bitemporal ECT	6 months	The secondary exploratory endpoint will investigate the differences between MST, RUL-UB ECT and bitemporal ECT on relapse status among participants during and after a course of continuation convulsive therapy.
Differences in HRSD-24 scores between MST, RUL-UB ECT and bitemporal ECT	6 months	Hamilton Rating Scale for Depression (24-item version): * This scale is used to quantify the severity of symptoms of depression; * Scale range: 0-76 (total score); * Lower scores indicate lower severity of depressive symptoms (i.e., better outcome); * Higher scores indicate higher severity of depressive symptoms (i.e., worse outcome); A further endpoint will explore the difference on HRSD in those that receive MST, RUL-UB ECT and bitemporal ECT.

Trial Locations

Locations (3)

UBC Hospital, University of British Columbia (UBC); 🇨🇦 Vancouver, British Columbia, Canada

Temerty Centre for Therapeutic Brain Intervention, Centre for Addiction and Mental Health; 🇨🇦 Toronto, Ontario, Canada

Ontario Shores Centre for Mental Health Sciences; 🇨🇦 Whitby, Ontario, Canada