A Double Blind, Randomized, Placebo-controlled, Parallel Group, Multicenter Phase 3 Pivotal Study to Assess the Safety and Efficacy of 1mg/kg/Day Intravenous DP-b99 Over 4 Consecutive Days Versus Placebo When Initiated Within Nine Hours of Acute Ischemic Stroke Onset
试验速览
- 阶段
- 3 期
- 状态
- 终止
- 发起方
- 入组人数
- 446
- 试验地点
- 153
- 主要终点
- Modified Rankin Scale (mRS) categorical analysis ("shift")
研究概览
简要总结
The purpose of this trial is to determine if intravenous administration of the metal ion trapping agent DP-b99 up to 9 hours following acute ischemic stroke onset, and then for 3 additional days (4 consecutive days in total) is effective in improving long term outcome. Patients will be followed up for 3 months after the stroke.
详细描述
This will be a randomized, double-blind, placebo-controlled, multicenter, multi-national, parallel-arm, pivotal study comparing a placebo group to a DP-b99 group treated with intravenous 1.0 mg/kg/d for 4 consecutive days, in acute ischemic stroke patients with an entry National Institutes of Health Stroke Scale (NIHSS) score of 10-16 and a clinical syndrome that includes at least 1 of the following: language dysfunction, visual field defect or Extinction and Inattention (formerly Neglect) (as reflected by at least 1 point on any of the corresponding items of the NIHSS: 9, 3 or 11). An interim analysis for futility will be performed after Day 90 (or last available observation) primary endpoint data have been collected on about 45% of subjects planned to be enrolled. Clinical trial material (CTM) will be administered within 9 hours after the onset of acute ischemic stroke symptoms. Subjects will be randomized at a ratio of 1:1 to receive either DP-b99 or placebo. A data and safety monitoring board (DSMB) will assess the accumulating safety data periodically and will oversee the interim futility analysis.
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
- Triple (Participant, Care Provider, Investigator)
入排标准
- 年龄范围
- 18 Years 至 85 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- 未提供
排除标准
- •An intracerebral or subarachnoid hemorrhage per screening/baseline computerized tomography scan or susceptibility-weighted magnetic resonance imaging
- •A candidate for either:
- •thrombolytic therapy, or have been treated with thrombolytic therapy for the current stroke
- •mechanical thromboembolectomy, or have been treated with mechanical thromboembolectomy for the current stroke
- •Delirious, comatose or stuporous or demented, or having a mental impairment that in the investigator's opinion renders the subject incapable to participate in the study
- •Have seizure(s) anytime from stroke onset to screening/baseline NIHSS evaluation
- •Neurological or non-neurological comorbidities that in the investigator's opinion may lead, independent of the current stroke, to further deterioration in the subject's neurological status during the trial period, or may render the study's neurological assessments inconclusive for the purpose of evaluating solely the stroke's effects
- •Likely to undergo a procedure involving cardiopulmonary bypass during the study period
- •Suffered a myocardial infarction in the last 90 days
- •Any medical condition that in the investigator's opinion may threaten the subject's ability to complete the study (e.g., concurrent significant or life-threatening diseases, such as malignancies or end stage organ failure)
- •Rapid spontaneous improvement of neurological signs during screening/baseline assessments
- •Premorbid neurological deficits and functional limitations assessed by a pre-stroke Modified Rankin Scale score of > 1
- •Suffered a stroke within 90 days of the screening/baseline assessments that is either diagnostically confirmed or assumed to be in the same cerebral territory as is the current acute stroke
- •Either severe hypertension or hypotension, as measured by at least 2 consecutive supine measurements taken 10 minutes apart prior to randomization.
- •Significant current renal or hepatic disease(s): a serum creatinine concentration of >2.5 mg/dL; alanine aminotransferase, aspartate aminotransferase, or gamma-glutamyl transferase values that are three times greater than the upper limit of normal.
- •Have a platelet count of <100,000/mm3 or, for patients on oral anticoagulants at study entry, INR of >4
- •Female of childbearing potential who is not willing to use adequate and effective birth control measures for the duration of the trial. Effective birth control measures include hormonal contraception, a barrier method such as a diaphragm, intrauterine device and/or condom with spermicide
- •Positive urine pregnancy test at screening/baseline or be a lactating female
- •Currently dependent on, or abusing, alcohol or one or more of the following: sympathomimetic amines, cannabis, cocaine, hallucinogens, inhalants, opioids, phencyclidine, sedatives and hypnotics
- •Received an investigational drug or product or participated in an investigational drug study within a period of 30 days prior to receiving study medication or have previously participated in a clinical trial involving DP-b99
- •Severe anemia as measured by a hemoglobin value of < 7 g/dl.
- •In a dependent relationship with the physician or the study sponsor.
- •Known hypersensitivity to any component of the investigational product.
研究组 & 干预措施
DP-b99
干预措施: DP-b99 (Drug)
Mannitol
干预措施: Placebo (Drug)
结局指标
主要结局
Modified Rankin Scale (mRS) categorical analysis ("shift")
时间窗: 90 days
次要结局
- Safety and tolerability(throughout study - baseline until day 90)
- Recovery, defined as a score of ≤ 1 on modified Rankin Score(90 days)
- recovery as assessed by an NIHSS of not more than 1(90 days)
- 'home time'(90 days)