Linear Asymmetric rTMS in Adolescent Treatment-Resistant Depression: Tolerability of Treatment Durations Ranging From Ten Days to One Day

Overview

This is a pilot interventional study to investigate the acceptability, tolerability, and side effect profile for varying numbers of treatment sessions/day of a new rTMS treatment in adolescents with treatment-resistant depression (TRD). Conventional rTMS has been limited to sinusoidal biphasic electromagnetic pulses. In contrast, the First Dawn rTMS system by NeuroQore can sustain a repetitive linear asymmetric pulse. In addition, identification of rTMS treatment sites in adolescents with TRD most often relies on anatomic landmarks, but the First Dawn rTMS system utilizes personal fMRI data in a novel algorithm to determine where to apply the rTMS in each patient. Based on adult data in healthy volunteers and patients with TRD, the investigators propose that the First Dawn rTMS system will be acceptable and well-tolerated by adolescents and will have minimal side effects. Please see https://clinicaltrials.gov/ct2/show/NCT02667041 for details on the completed pilot study in adults. The investigators aim to investigate acceptability, tolerability, and side effects in groups of patients receiving treatment in numbers of sessions/day that are gradually accelerated over the course of the study. Results will be used to inform the development of a randomized controlled trial.

The 18 patients will be placed into 6 sub-groups sequentially as they are enrolled. All patients will receive a maximum of 30,000 pulses in their treatment course, as tolerated. The first group will receive daily sessions, similar to standard rTMS treatment. Each of the remaining groups will be set to receive more frequent sessions/day in decreasing numbers of days on a graduated schedule while holding the total number of pulses for each patient's treatment course at 30,000 pulses. in addition, the investigators will recruit one healthy volunteer to test fMRI server data transfer and analysis. This healthy volunteer will not receive rTMS. Primary Objectives The primary objectives of this study are to assess: 1) the feasibility of enrollment (number of patients who enroll divided by the number of patients approached), 2) study retention (number of patients completing the study divided by the number enrolled), and 3) AE/SE profile of the treatment at each protocol level and 4) patient experience in the study across the sample and within the sub-groups. Secondary Objectives The secondary objectives of this study are to: 1) evaluate daily changes in symptoms of depression and mental status; 2) evaluate fMRI changes in the LDLPFC after treatment; 3) evaluate post-treatment and 3-month changes in depression symptoms, global function, mental status, verbal memory.