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Brain AneurysmSCENTNCT01716117

Safety and Effectiveness of an Intracranial Aneurysm Embolization System for Treating Large or Giant Wide Neck Aneurysms

A study testing Surpass Flow Diverter in people with Brain Aneurysm, run by Stryker Neurovascular at 26 sites in 2 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This clinical research study is designed to determine safety and effectiveness of the Surpass Flow Diverter (Surpass System), an investigational device developed to treat wide-neck, large or giant intracranial aneurysms. An intracranial aneurysm is a bulge in the wall of a blood vessel in the brain. Read more about this study

Who is it for?
Ages 19 to 80 years
Conditions the study is for
Brain Aneurysm
What is being tested?
Surpass Flow Diverter
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
213 participants
Where
26 sitesin 2 countries
Study dates
25 Oct 2012to 7 Jul 2022
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 19 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age 19 to 80 years
  • Subject or legal representative is willing and able to give informed consent
  • Subject has a single targeted intracranial aneurysm
  • Subject agrees to return to the treating Investigator for all scheduled follow up visits and is capable of returning to the hospital for follow up

Who cannot join

  • Known allergy or contraindication to aspirin, clopidogrel/Plavix, heparin, local or general anesthesia
  • Known history of life threatening allergy to contrast dye
  • Known allergy to nickel, chromium cobalt, tungsten or platinum
  • Subject has documented resistance to clopidogrel/Plavix
  • Major surgery within previous 30 days or planned in the next 120 days after enrollment date
  • Previous intracranial implant associated with the symptomatic distribution within the past 12 weeks prior to treatment date
Show all 32Show fewer
  • Stenting, angioplasty, or endarterectomy of an extracranial (carotid or vertebral artery) or intracranial artery within 30 days prior to treatment date
  • Any previous stenting of parent artery at or proximal to the aneurysm where it would interfere with the placement and proper apposition of the device
  • Any previous coiling where it would interfere with the placement and proper apposition of the device
  • Platelet count less than 100,000 cells/mm3 or known platelet dysfunction
  • More than one intracranial aneurysm (IA) that requires treatment within 12 months
  • Asymptomatic extradural aneurysms requiring treatment
  • Contraindication to CT scan or MRI
  • Severe neurological deficit that renders the subject incapable of living independently
  • Unstable neurological deficit (i.e., worsening of clinical condition in the last 30 days)
  • Evidence of active infection at the time of treatment
  • Dementia or psychiatric problem that prevents the patient from completing required follow up
  • Co-morbid conditions that may limit survival to less than 24 months
  • Serum creatinine greater or equal to 2.5 mg/dL
  • Female subjects who are pregnant or planning to become pregnant within the study period
  • Subject with anatomy not appropriate for endovascular treatment due to severe intracranial vessel tortuosity or stenosis
  • Extra-cranial stenosis or parent vessel with stenosis greater than 50% in the area proximal to the aneurysm
  • Other known serious concurrent medical conditions
  • History of intracranial vasospasm not responsive to medical therapy
  • Subject with an intracranial mass, or is undergoing radiation therapy for carcinoma or sarcoma of the head or neck region
  • Subject has a history of bleeding diathesis or coagulopathy, international normalized ratio (INR) greater than 1.5, or will refuse blood transfusions
  • Subject had a subarachnoid hemorrhage within 30 days prior to the enrollment date
  • Subject has a non-treated arteriovenous malformation (AVM) in the territory of the target aneurysm
  • Inability to understand the study or a history of non-compliance with medical advice
  • Current use of illicit substance
  • Enrollment in another trial involving an investigational product
  • Subject has a need for long-term use of anticoagulants (i.e., Warfarin, Dabigatran)

Trial locations and contacts

26 sites in 2 countries.

26 sites in 2 countries

United States25 sites
  • Johns Hopkins University

    Baltimore, Maryland, 21287

  • University at Buffalo

    Buffalo, New York, 14203

  • Medical University of South Carolina

    Charleston, South Carolina, 29425

  • University of Virginia

    Charlottesville, Virginia, 22908

  • Rush University Medical Center

    Chicago, Illinois, 60612

  • Cleveland Clinic

    Cleveland, Ohio, 44195

  • University of Texas - Southwestern

    Dallas, Texas, 75390

  • University of Florida

    Gainesville, Florida, 32611

  • Baylor College of Medicine

    Houston, Texas, 77030

  • University of California

    Irvine, California, 92697

  • Lyerly Neurosurgery/Baptist Health System

    Jacksonville, Florida, 32207

  • Mayo Clinic - Florida

    Jacksonville, Florida, 32224

  • The University of Kansas Medical Center

    Kansas City, Kansas, 66160

  • Fort Sanders Medical Center

    Knoxville, Tennessee, 37916

  • Baptist Hospital of Miami

    Miami, Florida, 33176

  • The Medical College of Wisconsin

    Milwaukee, Wisconsin, 53226

  • Vanderbilt University Medical Center

    Nashville, Tennessee, 37232

  • Columbia University

    New York, New York, 10032

  • Thomas Jefferson University

    Philadelphia, Pennsylvania, 19107

  • Oregon Health and Science University

    Portland, Oregon, 97239

  • Mayo Clinic - Minnesota

    Rochester, Minnesota, 55902

  • University of Utah

    Salt Lake City, Utah, 84132

  • Santa Barbara Cottage Hospital

    Santa Barbara, California, 93105

  • Tampa General Hospital

    Tampa, Florida, 33606

  • University of Massachusetts Medical School

    Worcester, Massachusetts, 01655

Other trials in United States

Netherlands1 site
  • UMC St Radboud

    Nijmegen

Other trials in Netherlands

About this study

Official title: The Surpass Intracranial Aneurysm Embolization System Pivotal Trial to Treat Large or Giant Wide Neck Aneurysms (SCENT Trial)

This clinical research study is designed to determine safety and effectiveness of the Surpass Flow Diverter (Surpass System), an investigational device developed to treat wide-neck, large or giant intracranial aneurysms. An intracranial aneurysm is a bulge in the wall of a blood vessel in the brain. The bulge is caused by a weakening of the vessel wall. If left untreated, the bulge may continue to grow larger and ultimately the vessel may break open (rupture), resulting in serious bleeding into or around the brain. The information collected from this study will be used to evaluate how well patients do when treated with the Surpass System both immediately after treatment of an aneurysm and over a long period of time (5 years).

Read the detailed description

The objective of this study is to determine safety and effectiveness of the Surpass Flow Diverter (Surpass System) in the endovascular treatment of large or giant wide-necked intracranial aneurysms in the internal carotid artery up to the terminus. The Surpass Flow Diverter is an intracranial implant designed to be placed in a parent artery so as to divert blood flow away from an aneurysm. Use of the Surpass System may be associated with a decrease in neurological death or ipsilateral stroke in patients with large or giant wide-neck aneurysms. In a given patient, the Surpass System will be deemed effective if treatment results in complete occlusion of their aneurysm without clinically significant stenosis of the parent artery, or requires retreatment of the aneurysm through 12 months.

Conditions
Brain Aneurysm
Being tested
Surpass Flow Diverter
Keywords
Large aneurysm, Giant aneurysm, Wide neck aneurysm
Medical subject headings
Intracranial Aneurysm

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Surpass Flow DiverterDevice

    Also called Flow diverter, Endovascular aneurysm treatment

    Treatment of an intracranial aneurysm involves the placement of a specially designed metallic mesh tube in a vessel in the brain where an aneurysm is located. The device looks like a fishnet sock with both ends open. Each device is delivered through a small catheter (a long, flexible tube). The catheter containing the device is inserted and advanced into a vessel in the brain. The device is then placed in the brain vessel by releasing it from the catheter. Once the device is placed inside the brain vessel, it is intended to reinforce the area of the vessel that is weakened and bulging (the aneurysm), and to cause blood to flow down the vessel and away from the aneurysm while allowing blood in the aneurysm to clot. This procedure is called an endovascular aneurysm treatment because the device is delivered through the blood vessels.

Study groups in NCT01716117
Study groupRoleWhat they receive
Surpass Flow DiverterExperimentalThe objective of this study is to determine the safety and effectiveness of the Surpass Flow Diverter (Surpass System) in the endovascular treatment of large or giant wide-necked intracranial aneurysms in the internal carotid artery up to the terminus.
Receives: Device: Surpass Flow Diverter

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. mITT Primary Effectiveness Endpoint. Based on Subjects With 100% Occlusion of the Aneurysm Without Clinically Significant Stenosis of the Parent Artery, and Without Any Subsequent Treatment of the Target Aneurysm at the 12 Month Follow up Visit.

    Percent of subjects with 100% occlusion of the aneurysm without clinically significant stenosis (defined as less than or equal to 50% stenosis) of the parent artery based on core lab evaluation of the 12 month follow up angiogram and without any subsequent treatment of the target aneurysm at the 12 month follow up visit.

    Measured: 12 months

  2. mITT Primary Safety Endpoint. Based on Subjects Experiencing Neurologic Death or Major Ipsilateral Stroke Through 12 Month Follow-up.

    Subjects experiencing neurologic death or major ipsilateral stroke through 12 months.

    Measured: 12 months

Secondary outcomes (1)
  1. Raymond-Roy Score Per Core Lab Assessment Based on Device Apposition at 12 Months Post-Procedure

    The Raymond-Roy intracranial aneurysm occlusion classification was used to assess the rate of aneurysm occlusion at the time of primary endpoint assessment (12 months). Occlusion rates were reported as Class I: complete obliteration (best); Class II: residual neck; Class III: residual aneurysm (worse).

    Measured: 12 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted29 Oct 2012 (estimated)
  2. Study start25 Oct 2012
  3. Primary completion11 Dec 2016
  4. Study completion7 Jul 2022

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Model description
The SCENT Trial is a multi-center, prospective, non-randomized trial.
Masking
None (open label)
Enrolment
213 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01716117
Sponsor's protocol ID
SP-04
Acronym
SCENT
Status last verified
Dec 2022
First submitted
24 Oct 2012
Last updated
19 Dec 2022
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
Individual data sharing
No: There is no plan to make IPD information available to other researchers. Blinded study data by mITT and Roll-in cohorts may be made available to SCENT researchers post publication of the primary study results.

Publications

  • Wakhloo AK, Jenkins P, Meyers PM, Coon AL, Kan PT, Puri AS, de Vries J, Lanzino G, Bain MD, Ebersole KC, Welch BG, Dogan A, Jabbour PM, Mocco J, Siddiqui AH, Turk AS, Taussky P, Hanel RA. Patient's Age Impact on Stroke Risk and Intracranial Aneurysm Occlusion: SCENT Flow Diverter Study-A Nonrandomized Clinical Trial on Large and Giant Aneurysms. Neurosurg Pract. 2026 Apr 17;7(2):e000222. doi: 10.1227/neuprac.0000000000000222. eCollection 2026 Jun.

    PubMed 42007246
  • Meyers PM, Coon AL, Kan P, Dogan A, Bain M, Welch BG, Ebersole K, De Vries J, Wakhloo AK, Taussky P, Jenkins P, Hanel RA; SCENT Investigators. Five-year results of the SCENT trial with Surpass flow diverters to treat large or giant wide-neck aneurysms. J Neurointerv Surg. 2025 Sep 12;17(10):1078-1082. doi: 10.1136/jnis-2024-022977.

    PubMed 40335285
  • Hanel RA, Cortez GM, Coon AL, Kan P, Taussky P, Wakhloo AK, Welch BG, Dogan A, Bain M, De Vries J, Ebersole K, Meyers PM; SCENT Investigator Group. Surpass Intracranial Aneurysm Embolization System Pivotal Trial to Treat Large or Giant Wide-Neck Aneurysms - SCENT: 3-year outcomes. J Neurointerv Surg. 2023 Nov;15(11):1084-1089. doi: 10.1136/jnis-2022-019512. Epub 2022 Nov 14.

    PubMed 36375835
  • Kan P, Mohanty A, Meyers PM, Coon AL, Wakhloo AK, Marosfoi M, Bain M, de Vries J, Ebersole K, Lanzino G, Taussky P, Hanel RA. Treatment of large and giant posterior communicating artery aneurysms with the Surpass streamline flow diverter: results from the SCENT trial. J Neurointerv Surg. 2023 Jul;15(7):679-683. doi: 10.1136/neurintsurg-2021-018189. Epub 2022 May 12.

    PubMed 35551072
  • Meyers PM, Coon AL, Kan PT, Wakhloo AK, Hanel RA. SCENT Trial. Stroke. 2019 Jun;50(6):1473-1479. doi: 10.1161/STROKEAHA.118.024135. Epub 2019 May 14.

    PubMed 31084335
  • Colby GP, Lin LM, Caplan JM, Jiang B, Michniewicz B, Huang J, Tamargo RJ, Coon AL. Flow diversion of large internal carotid artery aneurysms with the surpass device: impressions and technical nuance from the initial North American experience. J Neurointerv Surg. 2016 Mar;8(3):279-86. doi: 10.1136/neurintsurg-2015-011769. Epub 2015 May 18.

    PubMed 25987590

Questions about this trial

What is this clinical trial studying?

A study testing Surpass Flow Diverter in people with Brain Aneurysm, run by Stryker Neurovascular at 26 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 32 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 19 Dec 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 26 sites in United States, Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 23 Jul 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

mITT Primary Effectiveness Endpoint. Based on Subjects With 100% Occlusion of the Aneurysm Without Clinically Significant Stenosis of the Parent Artery, and Without Any Subsequent Treatment of the Target Aneurysm at the 12 Month Follow up Visit. (time frame: 12 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01716117, which also lists 6 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Dec 2022.

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