Confirmatory Efficacy and Safety Trial of Magnetic Seizure Therapy for Depression (CREST-MST)
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ClinicalTrials.gov Identifier: NCT03191058 |
Recruitment Status :
Recruiting
First Posted : June 19, 2017
Last Update Posted : August 31, 2022
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Condition or disease | Intervention/treatment | Phase |
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Depression Unipolar Depression Treatment Resistant Depression | Device: Magnetic Seizure Therapy Device: Electroconvulsive Therapy | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 260 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | The study is a randomized, double blind, parallel--group clinical trial with two treatment arms conducted both at the University of Texas Southwestern in Dallas, Texas and at the Temerty Centre for Therapeutic Brain Intervention based at CAMH in Toronto, Canada. Both sites aim to recruit 130 participants each. |
Masking: | Triple (Participant, Care Provider, Outcomes Assessor) |
Masking Description: | Participants will be randomized into the study using a permuted block method with a random number generator. The study statistician will prepare the randomization scheme. The block size will be varying and study personnel will be blinded to the randomization block size. |
Primary Purpose: | Treatment |
Official Title: | Confirmatory Efficacy and Safety Trial of Magnetic Seizure Therapy for Depression (CREST - MST) |
Actual Study Start Date : | June 26, 2018 |
Estimated Primary Completion Date : | July 2024 |
Estimated Study Completion Date : | July 2024 |

Arm | Intervention/treatment |
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Experimental: Magnetic Seizure Therapy (MST)
MST treatments will be administered using the MagPro MST with Cool TwinCoil.
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Device: Magnetic Seizure Therapy
MST treatment will be administered using the MagPro MST with a Cool TwinCoil over the frontal cortex in the midline position using 100 Hz stimulation. The MST determination of seizure threshold will be done using 100% machine output applied at 100 Hz at progressively escalating train durations, commencing at 2 seconds and increasing by 2 seconds with each subsequent stimulation until an adequate seizure is produced. During subsequent sessions, one stimulation will be delivered using a train duration that is 4 seconds longer than the train duration at threshold (with a maximum train duration of 10 seconds). This will be performed under the effect of anesthesia. The treatment procedure is approximately 10 minutes, followed by a recovery period of approximately 30 minutes. Other Name: MST |
Active Comparator: Electroconvulsive Therapy (ECT)
ECT treatments will be administered using the MECTA spECTrum 5000Q or the MECTA Sigma devices.
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Device: Electroconvulsive Therapy
In the ECT arm treatment, the MECTA spectrum 5000Q or the MECTA Sigma devices will be used, which are FDA approved devices used for providing standard-of-care clinical ECT treatments. The ECT determination of seizure threshold and the adjustment of energy at subsequent sessions will be based on a standard published protocol. All participants will receive RUL-UB ECT at six times the seizure threshold under the effect of anesthesia. The treatment procedure is approximately 10 minutes, followed by a recovery period of approximately 30 minutes
Other Name: ECT |
- Improvement in symptom severity of depression as measured by the Hamilton Rating Scale for Depression - 24 (HRSD-24) [ Time Frame: 7 weeks ]
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)
- Cognitive adverse effects as indexed by the Autobiographical Memory Test (AMT) [ Time Frame: 7 weeks ]
Autobiographical Memory Test:
-Interviewer-rated measure with 10 items that indexes autobiographical memory recall and specificity.
- Improvement in symptom severity of Suicidal Ideation as measured by the Scale for Suicidal Ideation (SSI) [ Time Frame: 7 weeks ]
Scale for Suicidal Ideation:
- This scale is used to assess the presence or absence of suicidal ideation and the degree of severity of suicidal ideas
- Scale range: 0 - 38 (total score)
- Lower scores indicate lower severity of suicidal ideation (i.e., better outcome)
- Higher scores indicate higher severity of suicidal ideation (i.e., worse outcome)

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria
Patients will be included if they:
- are inpatients or outpatients;
- are voluntary and competent to consent to treatment and research procedures according to ECT/MST attending psychiatrist;
- have a MINI International Neuropsychiatric Interview diagnosis, Version 6 (MINI-6.0) diagnosis of non-psychotic MDD
- are 18 years of age or older
- have a baseline HRSD-24 score > or = 21;
- are considered to be appropriate to receive convulsive therapy as assessed by an ECT attending psychiatrist and a consultant anaesthesiologist
- are agreeable to keeping their current antidepressant treatment constant during the intervention;
- are likely able to adhere to the intervention schedule;
- meet the MST safety criteria [75];
- 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
Patients will be excluded if they:
- have a history of MINI diagnosis of substance dependence or abuse within the past three months;
- have a concomitant major unstable medical illness;
- are pregnant or intend to get pregnant during the study;
- have a MINI diagnosis of any primary psychotic disorder
- have a MINI diagnosis of obsessive compulsive disorder, or post-traumatic stress disorder deemed to be primary and causing more functional impairment than the depressive disorder
- have probable dementia based on study investigator assessment;
- 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;
- 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);
- 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;
- require a benzodiazepine with a dose > 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;
- are unable to communicate in English fluently enough to complete the neuropsychological tests;
- have a non-correctable clinically significant sensory impairment (i.e., cannot hear or see well enough to complete the neuropsychological tests).

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03191058
Contact: Daniel Blumberger, MD | 416-535-8501 ext 33662 | Daniel.Blumberger@camh.ca | |
Contact: Hannah Taalman, MSc | 416-535-8501 ext 30990 | Hannah.taalman@camh.ca |
United States, California | |
University of California San Diego | Not yet recruiting |
San Diego, California, United States, 92127 | |
Contact: Z. Jeff Daskalakis, MD PhD 858-207-0938 IPtrials@health.ucsd.edu | |
Contact: Danielle Mitgang 858 207 0938 IPtrials@health.ucsd.edu | |
Principal Investigator: Z. Jeff Daskalakis, MD PhD | |
United States, Texas | |
University of Texas Southwestern Medical Center | Recruiting |
Dallas, Texas, United States, 75390-9127 | |
Contact: Carol A Tamminga, MD 214-648-2806 Carol.Tamminga@UTSouthwestern.edu | |
Contact: Hila Abush Segev, PhD 214-648-0401 Hila.Abushsegev@UTSouthwestern.edu | |
Principal Investigator: Carol A Tamminga, MD | |
Canada, Ontario | |
Temerty Centre for Therapeutic Brain Intervention, Centre for Addiction and Mental Health | Recruiting |
Toronto, Ontario, Canada, M6J 1H4 | |
Contact: Daniel Blumberger, MD (416) 535-8501 ext 33662 Daniel.Blumberger@camh.ca | |
Contact: Dov Millstone, MPH (416) 535-8501 ext 36434 Dov.Millstone@camh.ca | |
Principal Investigator: Daniel Blumberger, MD |
Principal Investigator: | Daniel Blumberger, MD | Centre for Addiction and Mental Health |
Responsible Party: | Carol A. Tamminga, Professor and Chairperson, Department of Psychiatry, University of Texas Southwestern Medical Center |
ClinicalTrials.gov Identifier: | NCT03191058 |
Other Study ID Numbers: |
CREST-MST 1R01MH112815-01 ( U.S. NIH Grant/Contract ) |
First Posted: | June 19, 2017 Key Record Dates |
Last Update Posted: | August 31, 2022 |
Last Verified: | August 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | Yes |
Device Product Not Approved or Cleared by U.S. FDA: | Yes |
Depression Unipolar Depression Treatment Resistant Depression |
Magnetic Seizure Therapy Suicidal Ideation Electroconvulsive Therapy |
Seizures Depression Depressive Disorder Depressive Disorder, Treatment-Resistant Behavioral Symptoms |
Mood Disorders Mental Disorders Neurologic Manifestations Nervous System Diseases |