Multi-Modal Imaging of Psychostimulant Effects on Executive Function Post-RRSO
试验速览
- 阶段
- 4 期
- 状态
- 已完成
- 入组人数
- 69
- 试验地点
- 1
- 主要终点
- Brown Attention Deficit Disorder Scale (BADDS) Change Score (End of Trial Minus Baseline).
研究概览
简要总结
This is a double-blind, placebo-controlled, crossover study testing whether Vyvanse (lisdexamfetamine; LDX) improves executive functioning (EF) in 100 postmenopausal women who report onset of EF difficulties after oophorectomy. This study involves magnetic resonance imaging (MRI) to see how LDX affects brain chemistry while undergoing two 6-week trials of the study drug and placebo capsules.
UPDATE: We have recently updated this protocol (09/2020) to offer a remote version of the study that can be completed entirely from the participant's home. This alternate version of the study eliminates travel, the MRI, and blood draws.
详细描述
Following a medically induced menopause, many women report difficulty in remembering things, focusing and concentrating. The purpose of this study is to examine the effects of a stimulant medication called Vyvanse® (lisdexamfetamine; LDX) on executive functioning, such as attention, processing, organization, and memory, in women who are experiencing executive functioning difficulties after having undergone a risk-reducing bilateral salpingo-oophorectomy (RRSO). This study involves magnetic resonance imaging (MRI) to see how LDX affects brain chemistry while undergoing two 6-week trials of the study drug and placebo capsules.
Individuals wishing to participate in this study are medically healthy women between the ages of 35-58 years old who have undergone a risk-reducing bilateral salpingo-oophorectomy (RRSO) within the previous 15 years. Participants must have been premenopausal before undergoing RRSO (meaning they were having regular periods). They also must not have undergone radiation or chemotherapy in the past year.
Furthermore, participants must not suffer from a mental illness, including Attention Deficit Hyperactivity Disorder (ADHD), and must not have a recent history of drug abuse. Additionally, participants must not suffer from a fear of small, enclosed spaces (claustrophobia), and not have any implanted medical devices such as a pacemaker, orthodontic braces, or shrapnel. They must not have a history of seizures, uncontrolled hypertension or known renal impairment.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 35 Years 至 58 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Age 35-58;
- •Have undergone risk-reducing bilateral salpingo-oophorectomy (RRSO) within the previous 15 years AND were premenopausal at the time of RRSO;
- •Score of ≥ 20 on the Brown Attention Deficit Disorder Scale (BADDS);
- •Onset of executive function difficulties occurred post RRSO;
- •Clean urine drug screen (nicotine and marijuana are permissible);
- •Are fluent in written and spoken English;
- •Are able to give written informed consent (obtained at screening visit);
- •Have a high school diploma or equivalent degree (i.e., GED), as per subject report;
- •If using aromatase inhibitors or tamoxifen: Must have been on a stable dose for at least 6 months;
- •If completing visits remotely: Must have access to a telecommunications application (i.e., Skype), email, scanner/fax machine, and a private area that enables the protection of participant confidentiality.
- •Exclusion criteria:
- •Current, untreated psychiatric disorder;
- •Substance use disorder within the previous 3 years;
- •Lifetime history of ADHD or psychotic disorder including bipolar disorder, schizoaffective disorder, and schizophrenia;
- •Lifetime history of stimulant abuse or dependence;
- •Regular use of psychotropic medications except selective serotonin reuptake inhibitors (SSRI), serotonin noradrenergic reuptake inhibitors (SNRI), bupropion, zolpidem, gabapentin, or buspirone;
- •Chemotherapy within the past year;
- •Previous history of sensitivity or adverse reaction to lisdexamfetamine (LDX);
- •History of seizures or unstable medical condition;
- •Known heart disease or clinically significant abnormal electrocardiogram during screening as determined by the study MD;
- •Uncontrolled hypertension;
- •Presence of a metallic implant contraindicative to scanning at the 7T level;
- •Claustrophobia.
- •Consistent systolic blood pressure of >145mm Hg or diastolic blood pressure >90 mm Hg after three readings at time of screening;
- •Known renal impairment and End Stage Renal Disease (ESRD).
排除标准
- 未提供
研究组 & 干预措施
Lisdexamfetamine, then Placebo
Participants will have a 50% chance of first receiving the active study medication. They will begin at 20 mg/d and will increase up to 60 mg/d after 4 weeks, if well tolerated. Total time on the study drug is up to 6 weeks. After a washout period of 2 weeks they will begin with 1 sugar pill and will increase up to 3 pills after 4 weeks. Maximum time for taking the placebo is 6 weeks.
干预措施: Lisdexamfetamine (Drug)
Lisdexamfetamine, then Placebo
Participants will have a 50% chance of first receiving the active study medication. They will begin at 20 mg/d and will increase up to 60 mg/d after 4 weeks, if well tolerated. Total time on the study drug is up to 6 weeks. After a washout period of 2 weeks they will begin with 1 sugar pill and will increase up to 3 pills after 4 weeks. Maximum time for taking the placebo is 6 weeks.
干预措施: Placebo oral capsule (Drug)
Placebo, then Lisdexamfetamine
Participants will have a 50% chance of first receiving the placebo, beginning with 1 sugar pill and increasing up to 3 pills after 4 weeks. Maximum time for taking the placebo is 6 weeks. After a washout period of 2 weeks, they will begin active study medication at 20 mg/d and will increase up to 60 mg/d after 4 weeks, if well tolerated. Total time on the study drug is up to 6 weeks.
干预措施: Lisdexamfetamine (Drug)
Placebo, then Lisdexamfetamine
Participants will have a 50% chance of first receiving the placebo, beginning with 1 sugar pill and increasing up to 3 pills after 4 weeks. Maximum time for taking the placebo is 6 weeks. After a washout period of 2 weeks, they will begin active study medication at 20 mg/d and will increase up to 60 mg/d after 4 weeks, if well tolerated. Total time on the study drug is up to 6 weeks.
干预措施: Placebo oral capsule (Drug)
结局指标
主要结局
Brown Attention Deficit Disorder Scale (BADDS) Change Score (End of Trial Minus Baseline).
时间窗: Outcome measure change score represents end of trial (6 weeks) minus baseline.
The Brown Attention Deficit Disorder Scale (BADDS) (Brown, 1996) is a 40-item questionnaire that assesses five subscales of executive functioning. For each item in the questionnaire, participants reported the extent to which it had been a problem over the last six months (0 = never, 1 = once a week or less, 2 = twice a week, or 3 = almost daily). Total BADDS scores can range from 0-120, with higher scores indicating more self-reported difficulties with executive functioning. Outcome measures are reported as change scores for end of trial (6 weeks) minus baseline.
次要结局
- Brain Activation (Glutamate Contrast)(6 weeks)
- Brain Activation (BOLD Percent Signal Change)(6 weeks)