Efficacy and Safety Study of Desmoteplase to Treat Acute Ischemic Stroke (DIAS-4)
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
|Official Title:||A Randomised, Double-Blind, Parallel-Group Placebo-Controlled Phase III Study to Evaluate the Efficacy and Safety of Desmoteplase in Subjects With Acute Ischemic Stroke|
- Modified Rankin Scale Score (mRS) (Percentage of Participants With mRS Scores 0-2) [ Time Frame: Day 90 ]The mRS is a clinician-rated scale designed to provide a global assessment of the patients dependency after stroke. The scale consists of a single item measuring the patient's function based on the ability to perform daily activities. The patient is rated on a 7-point scale from 0 to 6, where a score of 5 corresponds to severe disability, and 6 to death. Assessment of a pre-stroke mRS score is based on an interview addressing the status of the patient prior to the stroke
- National Institutes of Health Stroke Scale (NIHSS) Score. (Percentage of Participants With NIHSS Scores <=1 or NIHSS Decrease >=8) [ Time Frame: 90 days ]The NIHSS is a clinician-rated, 15-item scale designed to assess the severity of stroke-related neurological deficits: level of consciousness, eye movements, visual fields, facial symmetry, motor strength (arm and leg), coordination, sensation, language (aphasia and dysarthria), and neglect. Each item is rated on a 3-, 4-, or 5-point scale ranging from 0 (normal) to the maximum score (extremely severe symptoms). The total score of the 15 items ranges from 0 to 42, where lower scores indicate less impairment.
- Composite of mRS & NIHSS Response (Percentage of Participants With mRS Scores 0-2 and (NIHSS <= 1 or NIHSS Decrease >= 8) [ Time Frame: Day 90 ]Please see outcomes measure one and two for detailed description of the scales
- Modified Ranking Scale Score (Using the Ordinal Scale) [ Time Frame: Day 90 ]Please see outcomes measure one for detailed description of the mRS scale
|Study Start Date:||April 2009|
|Primary Completion Date:||October 2014 (Final data collection date for primary outcome measure)|
90 μg/kg bodyweight, IV, single bolus over 1 to 2 minutes on 1st day
|Placebo Comparator: Placebo||
IV, single bolus over 1 to 2 minutes on 1st day
Acute stroke is a major cause of mortality and long-term disability in the developed world. The only currently approved thrombolytic intervention for acute ischemic stroke, which constitutes the majority of strokes, is alteplase (recombinant tissue plasminogen activator; rtPA). The use of alteplase is limited as it is approved for use within 3 hours after symptom onset and by the risk of inducing intracerebral haemorrhage; consequently fewer than 3% of acute stroke subjects are treated. The thrombolytic agent desmoteplase (recombinant Desmodus Salivary Plasminogen Activator alpha-1; rDSPAalpha-1) produced by recombinant biotechnology has its naturally occurring counterpart in the saliva of the vampire bat Desmodus rotundus. Compared to alteplase, desmoteplase has a more favourable profile in terms of high fibrin specificity and non neurotoxicity.
The study aims to confirm efficacy and safety of desmoteplase for thrombolytic therapy of patients with acute ischaemic stroke in the extended time window of 3 to 9 hours after onset of stroke symptoms.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00856661
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|Study Director:||Email contact via H. Lundbeck A/S||LundbeckClinicalTrials@lundbeck.com|