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Solitaire™ With the Intention For Thrombectomy as PRIMary Endovascular Treatment (SWIFT PRIME) Trial (SWIFT PRIME)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT01657461
Recruitment Status : Completed
First Posted : August 6, 2012
Results First Posted : May 18, 2017
Last Update Posted : May 18, 2017
Information provided by (Responsible Party):
Medtronic Neurovascular Clinical Affairs

Brief Summary:
The primary study objective is to determine if subjects experiencing an acute ischemic stroke due to large vessel occlusion, treated with combined IV t-PA and Solitaire Revascularization Device within 6 hours of symptom onset have less stroke-related neurological disability (mRS) than those subjects treated with IV t-PA alone

Condition or disease Intervention/treatment Phase
Acute Ischemic Stroke Drug: Intravenous (IV) recombinant human tissue plasminogen activator (rtPA) Device: Solitaire revascularization device Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 196 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Solitaire™ FR With the Intention For Thrombectomy as Primary Endovascular Treatment for Acute Ischemic Stroke (SWIFT PRIME) Clinical Trial
Study Start Date : December 2012
Actual Primary Completion Date : January 2015
Actual Study Completion Date : January 2015

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Ischemic Stroke

Arm Intervention/treatment
Experimental: IV t-PA with Solitaire™ revascularization device
Dual IV tPA therapy and adjunctive treatment with the Solitaire revascularization device
Device: Solitaire revascularization device
Clot retrieval with the Solitaire revascularization device after patients have received standard therapy with intravenous tissue plasminogen activator

Active Comparator: IV t-PA
Infusion of intravenous tissue plasminogen activator (IV t-PA)
Drug: Intravenous (IV) recombinant human tissue plasminogen activator (rtPA)
Standard therapy with Intravenous (IV) recombinant human tissue plasminogen activator (rtPA)

Primary Outcome Measures :
  1. 90-day Global Disability Assessed Via the Blinded Evaluation of Modified Rankin Score (mRS). [ Time Frame: 90 days ]

    mRS is a scale for measuring the degree of disability or dependence in the daily activities of people who have suffered a stroke. 0 No symptoms at all

    1. No significant disability despite symptoms; able to carry out all usual duties and activities
    2. Slight disability; unable to carry out all previous activities, but able to look after own affairs without assistance
    3. Moderate disability; requiring some help, but able to walk without assistance
    4. Moderately severe disability; unable to walk without assistance and unable to attend to own bodily needs without assistance
    5. Severe disability; bedridden, incontinent and requiring constant nursing care and attention
    6. Dead

Secondary Outcome Measures :
  1. Death Due to Any Cause at 90 Days [ Time Frame: 90 days ]
  2. Functional Independence as Defined by Modified Rankin Scale (mRS) Score ≤2 at 90 Days [ Time Frame: 90 days ]
  3. Change in NIH Stroke Scale Score at 27 ± 6 Hrs Post Randomization [ Time Frame: Baseline to 27±6 hours post randomization ]
    The NIHSS is a 15-item neurologic examination stroke scale used to evaluate the effect of acute cerebral infarction on the levels of consciousness, language, neglect, visual-field loss, extraocular movement, motor strength, ataxia, dysarthria, and sensory loss. NIHSS scores range from 0 - 42. A score of 0 indicates no stroke symptoms. Higher scores indicate incremental levels of neurological impairment.

  4. Volume of Cerebral Infarction as Measured by a CT or MRI Scan at 27±6 Hours Post Randomization [ Time Frame: 27±6 hours post randomization ]
  5. Reperfusion Measured by Reperfusion Ratio on CT or MRI Scan 27±6 Hours Post Randomization [ Time Frame: 27±6 hours post randomization ]
  6. Arterial Revascularization Measured by TICI 2b or 3 Following Device Use [ Time Frame: Post procedure ]
  7. Correlation of RAPID-assessed Core Infarct Volume With 27±6 Hours Post Randomization Stroke Infarction in Subjects Who Achieved TICI 2b-3 Reperfusion Without Intracranial Hemorrhage [ Time Frame: 27±6 hours post randomization ]

Other Outcome Measures:
  1. Incidence of All Serious Adverse Events (SAEs) [ Time Frame: Through 90 days ]
  2. Incidence of sICH at 27±6 Hours Post Randomization [ Time Frame: 27±6 hours post randomization ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Age 18 - 80
  2. Clinical signs consistent with acute ischemic stroke
  3. Prestroke Modified Rankin Score ≤ 1
  4. NIHSS ≥ 8 and < 30 at the time of randomization
  5. Initiation of IV t-PA within 4.5 hours of onset of stroke symptoms (onset time is defined as the last time when the patient was witnessed to be at baseline), with investigator verification that the subject has received / is receiving the correct IV t-PA dose for the estimated weight prior to randomization.
  6. Thrombolysis in Cerebral Infarction (TICI) 0-1 flow in the intracranial internal carotid artery, M1 segment of the MCA, or carotid terminus confirmed by CT or MR angiography that is accessible to the Solitaire™ FR Device.
  7. Subject is able to be treated within 6 hours of onset of stroke symptoms and within 1.5 hours (90 minutes) from CTA or MRA to groin puncture.
  8. Subject is willing to conduct protocol-required follow-up visits.
  9. An appropriate signed and dated Informed Consent Form (as allowed according to country regulations and approved by ethics committee and/or IRB) has been obtained
  10. Subject is affiliated with a social security system (if required by individual country regulations).
  11. Subject meets national regulatory criteria for clinical trial participation.

Exclusion Criteria:

  1. Subject who is contraindicated to IV t-PA as per local national guidelines.
  2. Female who is pregnant or lactating or has a positive pregnancy test at time of admission.
  3. As applicable by French law, subject who is a protected individual such as an incompetent adult or incarcerated person.
  4. Rapid neurological improvement prior to study randomization suggesting resolution of signs/symptoms of stroke.
  5. Known serious sensitivity to radiographic contrast agents.
  6. Known sensitivity to Nickel, Titanium metals or their alloys.
  7. Current participation in another investigational drug or device treatment study.
  8. Known hereditary or acquired hemorrhagic diathesis, coagulation factor deficiency. (A subject without history or suspicion of coagulopathy does not require INR or prothrombin time lab results to be available prior to enrollment.)
  9. Renal Failure as defined by a serum creatinine > 2.0 mg/dl (or 176.8 μmol/l) or Glomerular Filtration Rate [GFR] < 30Warfarin therapy with INR greater than 1.7.
  10. Subject who requires hemodialysis or peritoneal dialysis, or who have a contraindication to an angiogram for whatever reason
  11. Life expectancy of less than 90 days.
  12. Clinical presentation suggests a subarachnoid hemorrhage, even if initial CT or MRI scan is normal.
  13. Suspicion of aortic dissection.
  14. Subject with a co-morbid disease or condition that would confound the neurological and functional evaluations or compromise survival or ability to complete follow-up assessments.
  15. Subject currently uses or has a recent history of illicit drug(s) or abuses alcohol (defined as regular or daily consumption of more than 4 alcoholic drinks per day).
  16. Known history of arterial tortuosity, pre-existing stent, and/or other arterial disease which would prevent the device from reaching the target vessel and/or preclude safe recovery of the device.

Imaging Exclusion Criteria:

  1. Computed tomography (CT) or Magnetic Resonance Imaging (MRI) evidence of hemorrhage on presentation.
  2. CT or MRI evidence of mass effect or intra-cranial tumor (except small meningioma).
  3. CT or MRI evidence of cerebral vasculitis.
  4. CT showing hypodensity or MRI showing hyperintensity involving greater than 1/3 of the middle cerebral artery (MCA) territory (or in other territories, >100 cc of tissue) on presentation.
  5. Baseline non-contrast CT or DWI MRI evidence of a moderate/large core defined as extensive early ischemic changes of Alberta Stroke Program Early CT score (ASPECTS) < 6.
  6. CT or MRI evidence of a basilar artery (BA) occlusion or posterior cerebral artery (PCA) occlusion.
  7. CTA or MRA evidence of carotid dissection or complete cervical carotid occlusion requiring stenting at the time of the index procedure (i.e., mechanical thrombectomy)
  8. Imaging evidence that suggests, in the opinion of the investigator, the subject is not appropriate for mechanical thrombectomy intervention (e.g., inability to navigate to target lesion, moderate/large infarct with poor collateral circulation, etc).

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01657461

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United States, New York
Kaleida Health/Buffalo General
Buffalo, New York, United States, 14203
Sponsors and Collaborators
Medtronic Neurovascular Clinical Affairs
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Principal Investigator: Jeffrey Saver, MD University of California, Los Angeles
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

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Responsible Party: Medtronic Neurovascular Clinical Affairs
ClinicalTrials.gov Identifier: NCT01657461    
Other Study ID Numbers: NV-SFR004
First Posted: August 6, 2012    Key Record Dates
Results First Posted: May 18, 2017
Last Update Posted: May 18, 2017
Last Verified: April 2017
Additional relevant MeSH terms:
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Ischemic Stroke
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases
Tissue Plasminogen Activator
Fibrinolytic Agents
Fibrin Modulating Agents
Molecular Mechanisms of Pharmacological Action