A Feasibility Trial of Theta Burst Stimulation in Binge Eating Disorder
试验速览
- 阶段
- 不适用
- 状态
- 撤回
- 试验地点
- 2
- 主要终点
- Binge Eating Disorder Visual Analogue Scale Measure of Symptom Severity
研究概览
简要总结
Binge eating disorder (BED) is a common and disabling eating disorder (ED) which presents a substantial disease burden. Individuals seeking treatment for binge eating difficulties typically receive talking therapy treatment however, treatment response is inadequate. As such, it is imperative that novel treatment options be identified.
Repetitive transcranial magnetic stimulation (rTMS) techniques are well established for the treatment of depression and preliminary findings indicate that similarly therapeutic effects may occur in populations with eating difficulties. Intermittent theta burst stimulation (iTBS) is a novel variant of excitatory rTMS which is emerging as an attractive alternative to standard stimulation. This trial aims to assess the feasibility of conducting a large scale randomised controlled trial (RCT) investigating theta burst in individuals with binge eating disorder, and to examine whether theta burst stimulation may improve symptoms in this population.
详细描述
Binge eating is a common and disabling problem which is often associated with obesity. Binge eating causes significant distress and compromises quality of life in affected individuals. To date current treatments do not support full recovery in a considerable number of adults and adolescents. As such, it is important that we explore new options for treatment.
Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive procedure that is emerging as a potentially effective treatment for a range of psychiatric disorders. In rTMS, an electric current is passed through a coil placed on the scalp. This current creates a magnetic field which changes the activity in the brain area immediately below the coil. rTMS is a well-established treatment for depression and has been approved by the National Institute for Care and Excellence (NICE; 2015). The NICE-approved rTMS treatment for depression involves 20-30 sessions, each requiring 37.5 minutes of stimulation. A novel variant of rTMS, intermittent theta burst stimulation (iTBS), is an attractive alternative to standard stimulation; TBS, which is delivered using a very similar procedure as standard rTMS, may produce effects comparable to standard rTMS in as little as 3 minutes.
In depression, the therapeutic applications for rTMS have been widely studied. By comparison, research examining the potential applications of rTMS for the treatment of eating disorders and obesity are preliminary. Nevertheless, studies in eating disorders and obesity to date have reported promising results. For example, a case study involving a patient with refractory BED and comorbid depression reported clinical improvement following 20 sessions of high frequency (excitatory) rTMS targeting the left DLPFC (Baczynski et al, 2014). Similarly, two recent studies of obese adults have reported a reduction in food intake, reduced craving, and significant weight loss following 20 sessions of high frequency rTMS targeting the left DLPFC (Alvarado-Reynoso & Ambriz-Tututi, 2019; Kim et al, 2018). Finally, studies in healthy participants reporting strong cravings and clinical participants with bulimia nervosa have also reported a reduction in craving and food-intake following high frequency rTMS (for example, Dunlop et al, 2015; Van den Eynde, 2010, and Uher et al, 2010). No study to date has used iTBS in eating disorders.
The primary objective for this trial is to assess whether iTBS may benefit people with binge eating difficulties. As such, we are conducting two inter-related studies: (1) a proof-of-concept randomised double-blind sham-controlled trial involving a single-session of either real or sham iTBS, and (2) a therapeutic case series involving 20 sessions of real iTBS delivered week-daily over four consecutive weeks.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 13 Years 至 60 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Right handed
- •Meets DSM-5 criteria for full-syndrome BED
- •Overweight or obese according to World Health Organisation (WHO) criteria (BMI>25 kg/m2 for adults, and a weight-for-height greater than 2 standard deviations above the median for adolescents).
排除标准
- •All known contraindications to MRI and TBS (assessed using TMS and MRI safety screening questionnaires)
- •Pregnancy (or suspected pregnancy)
- •History of neurological disease and/or seizure
- •Having any metallic implants anywhere in the head or body
- •History of head or eye injury; significant health problems in the previous six months;
- •Lifetime diagnosis of substance dependence, psychosis, bipolar disorder, borderline personality disorder
- •Other primary psychiatric disorder requiring treatment in its own right
- •Taking psychotropic medication other than a stable dosage of selective serotonin reuptake inhibitors (SSRI) for at least 14 days prior to study enrollment
- •Alcohol consumption exceeding 14 units per week
- •Cigarette consumption or nicotine replacement exceeding >15 cigarettes daily or equivalent.
结局指标
主要结局
Binge Eating Disorder Visual Analogue Scale Measure of Symptom Severity
时间窗: Baseline, within 1 hour after receiving active or sham stimulation, and 24-hour follow-up
An index of BED symptoms will be computed by summing the scores on four 10cm visual analogue scales (VAS) assessing levels of current hunger, craving for food, urge to eat and urge to binge eat. Participants will indicate along the line the extent to which they are experiencing the symptom described, with a mark at 0cm indicating "None" and 10cm indicating "Extreme". Higher scores indicate higher BED severity.
次要结局
- Visual Analogue Scale Measure of General Psychopathology(Baseline, within 1 hour after receiving active or sham stimulation, and 24-hour follow-up)
- Delay Discounting Task(Baseline, within 1 hour after receiving active or sham stimulation, and 24-hour follow-up)
- Emotion Regulation Task(Baseline, within 1 hour after receiving active or sham stimulation, and 24-hour follow-up)