A Double-blind, Placebo-Controlled, Randomized, 4-Week, Multiple-Dose, Proof-of-Mechanism Study in Subjects With Prodromal Alzheimer's Disease Investigating the Effects of JNJ-54861911 on Aβ Processing in CSF and Plasma
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 45
- 主要终点
- Maximum observed plasma concentration (Cmax) of JNJ-54861911
研究概览
简要总结
The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics, and pharmacodynamics of JNJ-54861911 in patients with prodromal Alzheimer's disease (pAD).
详细描述
This will be a multicenter, double-blind (neither investigator nor patient knows which treatment the patient receives), placebo-controlled (placebo is an inactive substance that is compared with a drug to test whether the drug has a real effect in a clinical trial), randomized (patients are assigned different treatments based on chance), multiple-dose, proof-of-mechanism (POM) study in pAD. Approximately 24 outpatients (n=8/treatment group) diagnosed with pAD, according to the inclusion and exclusion criteria, will participate in this 4-week treatment study. For all enrolled patients, this study will consist of an 8-week eligibility screening period, a 4-week double-blind treatment period, and a follow-up examination (7-14 days after the last dose). Patients will be assigned randomly to 1 of 3 treatment groups: placebo, JNJ-54861911 10 mg once daily, or JNJ-54861911 50 mg once daily. Safety assessments will be performed throughout the study. The maximal study duration for a patient will be 14 weeks.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Double (Participant, Investigator)
入排标准
- 年龄范围
- 50 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients must have had sufficient education or work experience to exclude mental retardation
- •Patients must have an abnormal cognitive performance consistent with mild cognitive impairment based on the computerized neuropsychological test battery (CANTAB Elect) that can effectively screen patients and identify cognitive deficits consistent with mild cognitive impairment
- •Patients must have evidence of amyloid deposition by means of either 1) low cerebrospinal fluid amyloid beta 1-42 (CSF amyloid beta 1-42) levels and elevated CSF p-Tau and/or total tau levels at screening (cut off values for CSF amyloid beta 1-42 and CSF p-tau and/or total tau will be based on the values established by the Clinical Neurochemistry Lab, Sahlgrenska University Hospital, Mölndal, Sweden and specified in a separate lab manual) or 2) a positive 18F-flutematol amyloid positron emission tomography (PET) amyloid scan at screening (optional depending on the site's PET capability) or both
- •Patients must have a body mass index (BMI=weight/height²) between 18 and 35 kg/m2, inclusive, at screening
- •Women must be postmenopausal, permanently sterilized or otherwise be incapable of pregnancy
- •Must adhere to required contraception during and for 3 months after study
- •Patients must be otherwise healthy for their age group or medically stable with or without medication
- •Patients must be able to be compliant with self-administration of medication
- •Patients must be able to swallow drug as a whole
排除标准
- •Patient has evidence of brain disease, other than Alzheimer's Disease (AD), or any other abnormality (e.g. folic acid/Vitamin B12 deficiency) that could explain the cognitive deficit (including, but not limited to vascular encephalopathy or strokes, as imaged by cerebral MRI and Major Depression, as defined by DSM-IV criteria)
- •Patient has been diagnosed with dementia due to AD, due to other diseases, or with AD and contribution of other disorders (mixed dementia)
- •Patient has evidence of familial autosomal dominant AD
- •Patient has a history of substance or alcohol abuse
- •Relevant history of lower back pain or scoliosis and/or major (lumbar) back surgery
- •Patient is allergic to local anesthetics and/or iodine or chlorhexidine
- •Patient has taken aspirin (even low dose) within 5 days prior to lumbar puncture (screening or Day 1)
- •Patient has taken Low Molecular Weight Heparin (LMWH) within 12 hours prior to lumbar puncture (screening or Day 1)
- •Patient has taken any anticoagulant treatment (e.g. warfarin; besides LMWH described above) within 1 week prior to lumbar puncture (screening or Day 1)
研究组 & 干预措施
JNJ-54861911 50 mg
干预措施: JNJ-54861911 50 mg (Drug)
JNJ-54861911 10 mg
From Day 1 to Day 28 inclusive, patients will self-administer once daily study drug (JNJ-54861911 or placebo) with a glass of non-carbonated water (approximately 200 mL).
干预措施: JNJ-54861911 10 mg (Drug)
Placebo
Patients will receive matching placebo.
干预措施: Placebo (Drug)
结局指标
主要结局
Maximum observed plasma concentration (Cmax) of JNJ-54861911
时间窗: Up to 4 weeks
Cmax is the observed maximum plasma concentration of study drug, taken directly from the plasma concentration-time profile
Area under the plasma concentration time curve (AUC) from 0 to t hours of JNJ-54861911
时间窗: Up to 4 weeks
Area under the plasma concentration-time curve from 0 to t hours post dosing (time t is the dosing interval)
Levels of amyloid beta 1-40 in cerebrospinal (CSF) after treatment at the intended target dose range
时间窗: Up to 4 weeks
Levels of amyloid beta 1-40 in plasma after treatment at the intended target dose range
时间窗: Up to 4 weeks
Cerebrospinal fluid exposure of JNJ-54861911
时间窗: Up to 4 weeks
The number of volunteers who experience adverse events as a measure of safety and tolerability of JNJ-54861911 after multiple-dose administration in the anticipated target dose range
时间窗: Up to 4 weeks
Time to reach maximum observed plasma concentration of JNJ-54861911
时间窗: Up to 4 weeks
Time when Cmax is observed, taken directly from the plasma concentration-time profile
Half-life of JNJ-54861911
时间窗: Up to 4 weeks
Elimination half-life associated with the terminal slope of the semi-logarithmic drug concentration-time curve, calculated as 0.693/terminal slope
次要结局
- Levels of amyloid beta fragments (amyloid beta 1-37, 1-38, and 1-42) in cerebrospinal fluid after treatment at the intended target dose range(Up to 4 weeks)
- Levels of amyloid precursor protein (APP) fragments (soluble amyloid precursor protein α [sAPPalpha], sAPPbeta, totalAPP) in CSF after treatment at the intended target dose range(Up to 4 weeks)
- Levels of amyloid beta fragments (amyloid beta 1-37, 1-38, and 1-42) in plasma after treatment at the intended target dose range(Up to 4 weeks)
- Compare the relationship of amyloid beta 1-40 levels in plasma and cerebrospinal fluid after treatment at the intended target dose range(Up to 4 weeks)