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临床试验/NCT04256473
NCT04256473已完成2 期

Dual Thrombolytic Therapy With Mutant Pro-urokinase (M-pro-urokinase, HisproUK) and Low Dose Alteplase for Ischemic Stroke

Erasmus Medical Center1 个研究点 分布在 1 个国家目标入组 200 人开始时间: 2019年8月10日最近更新:
适应症
干预措施
相关药物

试验速览

阶段
2 期
状态
已完成
入组人数
200
试验地点
1
主要终点
Any intracranial hemorrhage according to the Heidelberg Bleeding Classification on MRI

研究概览

简要总结

Randomized controlled phase II trial to test the safety and preliminary efficacy of a dual thrombolytic treatment consisting of a small intravenous (IV) bolus of alteplase followed by IV infusion of mutant pro-urokinase against usual treatment with IV alteplase in patients presenting with ischemic stroke.

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
Single (Outcomes Assessor)

入排标准

年龄范围
18 Years 至 —(Adult, Older Adult)
性别
All
接受健康志愿者

入选标准

  • A clinical diagnosis of ischemic stroke;
  • A score of at least 1 on the NIH Stroke Scale;
  • CT ruling out intracranial hemorrhage;
  • Treatment possible within 4.5 hours from symptom onset or last seen well;
  • Meet the criteria for standard treatment for IV alteplase according to national guidelines27;
  • Age of 18 years or older;
  • Written informed consent (deferred).

排除标准

  • Candidate for endovascular thrombectomy (i.e., a proximal intracranial large artery occlusion on CTA);
  • Contra-indication for treatment with IV alteplase according to national guidelines27:
  • Arterial blood pressure exceeding 185/110 mmHg and not responding to treatment
  • Blood glucose less than 2.7 or over 22.2 mmol/L
  • Cerebral infarction in the previous 6 weeks with residual neurological deficit or signs of recent infarction on neuro-imaging
  • Head trauma in the previous 4 weeks
  • Major surgery or serious trauma in the previous 2 weeks
  • Gastrointestinal or urinary tract hemorrhage in the previous 2 weeks
  • Previous intracerebral hemorrhage
  • Use of anticoagulant with INR exceeding 1.7 or APTT exceeding 50 seconds
  • Known thrombocyte count less than 90 x 109 /L
  • Treatment with direct thrombin or factor X inhibitors, unless specific antidotum has been given, i.e. idarucizumab in case of dabigatran use.
  • Pre-stroke disability which interferes with the assessment of functional outcome at 90 days, i.e. mRS > 2;
  • Known pregnancy or if pregnancy cannot be excluded, i.e. did not have intercourse for > 6 months and no clinical signs of pregnancy, adequate use of any contraceptive method (e.g. intrauterine devices) or sterilization of the subject herself.
  • Contra-indication for an MRI scan, i.e.:
  • an MRI incompatible pacemaker, ICD, pacing wires and loop records
  • metallic foreign bodies (e.g. intra-ocular)
  • prosthetic heart valves
  • blood vessel clips, coils or stents
  • an implanted electronic and/or magnetic implant or pump (e.g. neurostimulator)
  • cochlear implants
  • mechanical implants (implanted less than 6 weeks ago)
  • a copper intrauterine device
  • Current Participation in any medical or surgical therapeutic trial other than DUMAS.

研究组 & 干预措施

Intervention

Experimental

Bolus of IV alteplase (5 mg) followed by continuous infusion of HisproUK 40 mg/hr during 60 minutes.

Depending on results of interim analyses, the alternate dose may be revised to a lower dose (30mg/hr during 60 minutes) or a higher dose (50mg/hr during 60 minutes).

干预措施: mutant pro-urokinase (Drug)

Control

Active Comparator

Usual care with alteplase 0.9 mg/kg in 60 minutes

干预措施: Alteplase (Drug)

结局指标

主要结局

Any intracranial hemorrhage according to the Heidelberg Bleeding Classification on MRI

时间窗: 24-48 hours post-treatment

次要结局

  • Death from any cause(Within 30 days)
  • Infarct volume on MRI(at 24-48 hours)
  • Score on the National Institutes of Health Stroke Scale (NIHSS)(at 24 hours and 5-7 days post-treatment)
  • Score on the modified Rankin Scale (mRS)(at 30 days)
  • Symptomatic intracranial hemorrhage (sICH) according to the Heidelberg Bleeding Classification(within 30 days)
  • Change (pre-treatment vs. post-treatment) in abnormal perfusion volume based on TTP/MTT maps measured with CT perfusion at baseline and MRI(at 24-48 hours post treatment.)
  • Secondary blood biomarkers of thrombolysis: d-dimer levels and fibrinogen levels.(1 hour post-treatment, after 3 hours, and after 24 hours post-treatment,)
  • Major extracranial hemorrhage according to the ISTH criteria(within 24 hours of study drug administration)

研究者

申办方类型
Other
责任方
Principal Investigator
主要研究者

Nadinda van der Ende

PI: Prof. Dr. DWJ Dippel and A. van der Lugt

Erasmus Medical Center

研究点 (1)

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