Evaluating Neuroprotection in Aneurysm Coiling Therapy (ENACT)

This study has been completed.
Sponsor:
Collaborator:
Arbor Vita Corporation
Information provided by (Responsible Party):
NoNO Inc.
ClinicalTrials.gov Identifier:
NCT00728182
First received: August 1, 2008
Last updated: August 9, 2013
Last verified: August 2013
Results First Received: May 8, 2013  
Study Type: Interventional
Study Design: Allocation: Randomized;   Endpoint Classification: Safety/Efficacy Study;   Intervention Model: Parallel Assignment;   Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor);   Primary Purpose: Treatment
Condition: Stroke
Interventions: Drug: NA-1
Drug: Placebo

  Participant Flow
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Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
Between September 16, 2008 and March 30, 2011, subjects were recruited to 10 hospitals in Canada and 3 in the United States.

Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
12 subjects were randomized into study but did not receive drug:5 due to do endovascular aneurysm repair, 3 due to inability to obtain a pre-procedure MRI,2 due to pre-procedure ECG showing a QTc interval > 450 ms, 1 due to a fatal aneurysm rupture before drug, and 1 due to refusal by anesthesiologist to give drug to a subject with severe COPD.

Reporting Groups
  Description
1 NA-1

20 amino acid peptide that consists of a 9 amino acid domain that inhibits PSD-95 and a 11 amino acid domain than enables the peptide to cross the blood-brain barrier.

NA-1 : single intravenous dose of 2.6 mg/kg of NA-1 administered as a 10-minute infusion

2 Placebo Placebo : single intravenous dose of 2.6 mg/kg of placebo administered as a 10-minute infusion

Participant Flow:   Overall Study
    1 NA-1     2 Placebo  
STARTED     92     93  
COMPLETED     89     90  
NOT COMPLETED     3     3  
Adverse Event                 1                 0  
Lost to Follow-up                 2                 0  
Death                 0                 2  
Protocol Noncompliance                 0                 1  



  Baseline Characteristics
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Population Description
Explanation of how the number of participants for analysis was determined. Includes whether analysis was per protocol, intention to treat, or another method. Also provides relevant details such as imputation technique, as appropriate.
No text entered.

Reporting Groups
  Description
1 NA-1

20 amino acid peptide that consists of a 9 amino acid domain that inhibits PSD-95 and a 11 amino acid domain than enables the peptide to cross the blood-brain barrier.

NA-1 : single intravenous dose of 2.6 mg/kg of NA-1 administered as a 10-minute infusion

2 Placebo Placebo : single intravenous dose of 2.6 mg/kg of placebo administered as a 10-minute infusion
Total Total of all reporting groups

Baseline Measures
    1 NA-1     2 Placebo     Total  
Number of Participants  
[units: participants]
  92     93     185  
Age  
[units: participants]
     
<=18 years     0     0     0  
Between 18 and 65 years     70     78     148  
>=65 years     22     15     37  
Age  
[units: years]
Mean ± Standard Deviation
  57.72  ± 10.6     56.05  ± 10.3     56.88  ± 10.5  
Gender  
[units: participants]
     
Female     64     68     132  
Male     28     25     53  
Region of Enrollment  
[units: participants]
     
United States     12     15     27  
Canada     80     78     158  



  Outcome Measures
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1.  Primary:   Volume of New FLAIR Lesions(MRI)   [ Time Frame: Enrolment, Days 2-4 ]

2.  Secondary:   Number of New DWI Lesions (MRI)   [ Time Frame: Enrolment, Day 2-4 ]

3.  Secondary:   Number of New FLAIR Lesions (MRI)   [ Time Frame: Enrolment, Days 2-4 ]

4.  Secondary:   Volume of New DWI Lesions (MRI)   [ Time Frame: Enrolment, Days 2-4 ]

5.  Secondary:   National Institutes of Health Stroke Scale (NIHSS).   [ Time Frame: Enrolment, Day 30 ]

6.  Secondary:   Modified Rankin Scale (mRS).   [ Time Frame: Enrolment, Day 30 ]

7.  Other Pre-specified:   Volume of New FLAIR Lesions (MRI) - Ruptured Aneurysm Subjects   [ Time Frame: Enrolment, Days 2-4 ]

8.  Other Pre-specified:   Number of New DWI Lesions (MRI) - Ruptured Aneuryms Subjects   [ Time Frame: Enrolment, Day 2-4 ]

9.  Other Pre-specified:   Number of New FLAIR Lesions (MRI) - Ruptured Aneurysm Subjects   [ Time Frame: Enrolment, Day 2-4 ]
  Hide Outcome Measure 9

Measure Type Other Pre-specified
Measure Title Number of New FLAIR Lesions (MRI) - Ruptured Aneurysm Subjects
Measure Description Number of new ischemic lesions as defined by FLAIR MRI at 12-95 hours postdose(pre-specified subgroup analysis)
Time Frame Enrolment, Day 2-4  
Safety Issue No  

Population Description
Explanation of how the number of participants for analysis was determined. Includes whether analysis was per protocol, intention to treat, or another method. Also provides relevant details such as imputation technique, as appropriate.
All subjects who entered the study with a ruptured aneurysm, who received study drug and an analyzable MRI at 12-95 hours postdose.

Reporting Groups
  Description
1 NA-1 - Subjects With Ruptured Aneurysms

20 amino acid peptide that consists of a 9 amino acid domain that inhibits PSD-95 and a 11 amino acid domain than enables the peptide to cross the blood-brain barrier.

NA-1 : single intravenous dose of 2.6 mg/kg of NA-1 administered as a 10-minute infusion

2 Placebo - Subjects With Ruptured Aneurysms Placebo : single intravenous dose of 2.6 mg/kg of placebo administered as a 10-minute infusion

Measured Values
    1 NA-1 - Subjects With Ruptured Aneurysms     2 Placebo - Subjects With Ruptured Aneurysms  
Number of Participants Analyzed  
[units: participants]
  18     19  
Number of New FLAIR Lesions (MRI) - Ruptured Aneurysm Subjects  
[units: Lesions]
Mean ± Standard Deviation
  2.4  ± 4.7     6.58  ± 7.5  


Statistical Analysis 1 for Number of New FLAIR Lesions (MRI) - Ruptured Aneurysm Subjects
Groups [1] All groups
Method [2] Generalized linear model
P Value [3] 0.046
Adjusted Incidence Rate Ratio [4] 0.36
95% Confidence Interval ( 0.17 to 0.75 )
[1] Additional details about the analysis, such as null hypothesis and power calculation:
  No text entered.
[2] Other relevant method information, such as adjustments or degrees of freedom:
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[3] Additional information, such as whether or not the p-value is adjusted for multiple comparisons and the a priori threshold for statistical significance:
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[4] Other relevant estimation information:
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10.  Other Pre-specified:   Volume of New DWI Lesions (MRI) - Ruptured Aneurysm Subjects   [ Time Frame: Enrolment, Day 2-4 ]

11.  Other Pre-specified:   National Institutes of Health Stroke Scale (NIHSS) - Ruptured Aneurysm Subjects   [ Time Frame: Enrolment, Day 30 ]

12.  Other Pre-specified:   Modified Rankin Scale (mRS)- Ruptured Aneurysm Subjects   [ Time Frame: Enrolment, Day 30 ]


  Serious Adverse Events


  Other Adverse Events


  Limitations and Caveats
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Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
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