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Trial on Endovascular Aneurysm Management (TEAM)

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. Identifier: NCT00537134
Recruitment Status : Terminated (The CIHR Financial support was withdrawn because of insufficient recruitment)
First Posted : September 28, 2007
Last Update Posted : January 31, 2019
Canadian Institutes of Health Research (CIHR)
Information provided by (Responsible Party):
Centre hospitalier de l'Université de Montréal (CHUM)

Brief Summary:
The management of patients with unruptured aneurysms is controversial. Patients with unruptured aneurysms may suffer intracranial hemorrhage, but the incidence of this event is still debated. Endovascular treatment can prevent rupture, but involves immediate risks; furthermore, successful treatment does not eliminate all risks. A randomized trial may be the best way to demonstrate the potential benefits of endovascular over conservative management of unruptured aneurysms.

Condition or disease Intervention/treatment Phase
Brain Aneurysm Device: Embolization, coiling Not Applicable

Detailed Description:

This study is designed as a pragmatic trial. All candidates for endovascular treatment of one or more unruptured intracranial aneurysms will be offered to participate. Unruptured aneurysms may be recently discovered or prevalent. If they accept, subjects will be randomized to one of the two arms of the trial: Conservative management (Observation) or Endovascular treatment.

Both groups will be advised to obtain medical treatment for hypertension if necessary and will receive counselling for behavioural risk factor modelling (smoking or excessive drinking) when indicated. A non-invasive (MRA or CTA) or catheter angiogram and a baseline CT-scan or MRI of the brain are required to enter the study. These studies should demonstrate the unequivocal presence of a saccular aneurysm >=3 mm treatable by endovascular methods. A catheter angiogram is required if there is doubt. Imaging studies will be reviewed centrally. Both treatments will be standardized. Patients will be followed similarly for a minimum of 10 years.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 80 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Safety and Efficacy of Endovascular Treatment of Unruptured Intracranial Aneurysms in the Prevention of Aneurysmal Haemorrhages: A Randomized Comparison With Indefinite Deferral of Treatment in 2002 Patients Followed for 10 Years
Actual Study Start Date : September 2006
Actual Primary Completion Date : December 2018
Actual Study Completion Date : December 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Aneurysms

Arm Intervention/treatment
No Intervention: 1
Conservative management (watchful observation)
Active Comparator: 2
Endovascular treatment
Device: Embolization, coiling
Endovascular embolization with platinum coils
Other Name: Standard and bioactive coils

Primary Outcome Measures :
  1. Primary outcome is disease or treatment-related morbidity and mortality. [ Time Frame: 1 year, 5 year and 10 years after treatment or observation ]

Secondary Outcome Measures :
  1. To better define the natural history of unruptured aneurysms eligible for endovascular treatment. [ Time Frame: At 5 and 10 years ]
  2. To define the rate of hemorrhagic events despite endovascular treatment. [ Time Frame: At 1, 5 and 10 years ]
  3. To determine the Morbidity/Mortality (M/M) related to endovascular treatment of unruptured aneurysms. [ Time Frame: At 1, 5 and 10 years ]
  4. To compare overall M/M of the 2 groups [ Time Frame: At 10 years ]
  5. To compare the quality of life and anxiety levels of surviving patients of the 2 groups. [ Time Frame: At 5 and 10 years ]
  6. To determine the rate of occlusion of aneurysms treated by coiling in an effort to estimate longer-term efficacy. [ Time Frame: At 5 and 10 years ]
  7. To determine the rate of aneurysmal growth in the conservative group in surviving patients. [ Time Frame: At 5 and 10 years ]
  8. To verify cognitive functions using the MoCA in all patients as well as by detailed neuropsychological testing, before and 6 months after treatment in a consecutive sample of 100 patients of both groups. [ Time Frame: Baseline, 1 year, 5 and 10 years ]

Information from the National Library of Medicine

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

Inclusion Criteria:

  • At least one documented subarachnoid aneurysm, never ruptured
  • Patient aged 18 or older
  • Life expectancy more than 10 years

Exclusion Criteria:

  • Patients with recent (less than 3 months) intracranial haemorrhage
  • Lesion characteristics unsuitable for endovascular treatment
  • Patients with a single extradural aneurysm
  • Aneurysms < 3 mm or giant aneurysms (≥ 25 mm)
  • Patients with a poor outcome (Rankin scale ≥ 3) after the rupture, surgical or endovascular treatment of another aneurysm
  • Patients with incompletely treated aneurysms that have previously ruptured
  • Patients with associated arteriovenous malformations
  • Patients with new severe progressive symptoms in relationship with the aneurysm (sudden onset, severe persisting headaches suggestive of impending rupture, third-nerve palsy, mass-effect)
  • Patients with previous intracranial haemorrhage from unknown etiology
  • Patients with multiple unruptured aneurysms in whom surgical clipping of one or many aneurysms is planned in addition to endovascular management
  • Patients with absolute contraindications to anaesthesia, endovascular treatment, or administration of contrast material, including low-osmolarity agents or gadolinium
  • Pregnant patients
  • Patients unable to give informed consent

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 identifier (NCT number): NCT00537134

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United States, Arizona
St Joseph's Hospital & Medical Center
Phoenix, Arizona, United States
United States, Massachusetts
Boston Medical Center
Boston, Massachusetts, United States
United States, New York
SUNY Downstate Medical Center
Brooklyn, New York, United States
St Luke's-Roosevelt Hospital Center
New York, New York, United States
United States, South Carolina
Medical University of South Carolina
Charleston, South Carolina, United States
United States, Texas
The Methodist Hospital
Houston, Texas, United States
Canada, Quebec
CHUM Notre-Dame Hospital / TEAM clinical research unit (Head office)
Montreal, Quebec, Canada, H2L 4M1
TEAM France Coordination Unit - CHU Reims CRICAM
Reims, France
United Kingdom
TEAM European Coordination Centre NVRU- Radcliffe Infirmary
Oxford, United Kingdom
Sponsors and Collaborators
Centre hospitalier de l'Université de Montréal (CHUM)
Canadian Institutes of Health Research (CIHR)
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Principal Investigator: Jean Raymond, MD Centre hospitalier de l'Université de Montréal - Hôpital Notre-Dame
Principal Investigator: Andrew J. Molyneux, MD NRU, Radcliffe Infirmary Oxford University UK
Principal Investigator: Allan J Fox, MD Sunnybrook Health Sciences Centre and University of Toronto
Principal Investigator: Claiborne S. Johnston, MD, PhD University of California, San Francisco, USA
Principal Investigator: Jean-Paul Collet, MD, PhD University of British Columbia, Vancouver, Canada
Principal Investigator: Isabelle Rouleau, PhD CHUM Hôpital Notre-Dame, Montreal, Canada
Additional Information:

Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Centre hospitalier de l'Université de Montréal (CHUM) Identifier: NCT00537134    
Other Study ID Numbers: MCT-80799
First Posted: September 28, 2007    Key Record Dates
Last Update Posted: January 31, 2019
Last Verified: January 2018
Keywords provided by Centre hospitalier de l'Université de Montréal (CHUM):
Additional relevant MeSH terms:
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Intracranial Aneurysm
Vascular Diseases
Cardiovascular Diseases
Intracranial Arterial Diseases
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases