At a glance
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Confirmatory Efficacy and Safety Trial of Magnetic Seizure Therapy for Depression (CREST - MST)
In Brief
A clinical study evaluating Magnetic Seizure Therapy and Electroconvulsive Therapy for Depression and 2 related conditions. Completed, enrolled 239 participants across 3 sites in 2 countries.
Detailed Summary
This trial aims to assess the efficacy and tolerability of Magnetic Seizure Therapy (MST) as an alternative to electroconvulsive therapy (ECT) for depression. Even with multiple medication trials, 30 - 40% of patients will experience a pharmacologically resistant form of illness. The ineffectiveness of current treatments for major depressive disorder (MDD) coupled with the economic burden associated with the disorder engenders a need for novel therapeutic interventions that can provide greater response and remission rates.
Study Details
Timeline
Interventions
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.
In the ECT arm treatment, the MECTA spectrum 5000Q or the Sigmastim 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