AtherosclerosisCRESTNCT00004732
Carotid Revascularization Endarterectomy Versus Stenting Trial
A study testing Carotid Endarterectomy (CEA) and Carotid Artery Stenting (CAS) in people with Atherosclerosis and Stroke, run by Rutgers, The State University of New Jersey at 115 sites in 2 countries.
Trial summary
The purpose of the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST) is to compare the relatively new procedure of stent-assisted carotid angioplasty (CAS) to the traditional and accepted surgical approach of carotid endarterectomy (CEA) for the treatment of carotid artery stenosis to prevent… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Atherosclerosis, Stroke, Carotid Stenosis
- What is being tested?
- Carotid Endarterectomy (CEA) and Carotid Artery Stenting (CAS)
- Type of treatment
- Medical device, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 2,502 participants
- Where
- 115 sitesin 2 countries
- Study dates
- Dec 2000to Dec 2016
- 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 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Symptomatic patients with recent neurological events (TIA or non-disabling stroke) with an associated carotid stenosis greater than or equal to 50% by angiography or greater than or equal to 70% by ultrasound or greater than or equal to 70% by Computed Tomography Angiography (CTA) or Magnetic Resonance Angiography (MRA) are eligible for randomization.
- Asymptomatic patients with no recent (in the last 6 months) neurological events referable to the study with artery and carotid stenosis (patients with symptoms beyond 180 days are considered asymptomatic) greater than or equal to 60% by angiography or greater than or equal to 70% by ultrasound or greater than or equal to 80% by CTA or MRA are eligible for randomization.
Who cannot join
- Conditions that: (1) interfere with the evaluation of endpoints, (2) are known to interfere with the completion of CEA or CAS, or (3) affect the likelihood of survival for the study period (4 years). Chronic atrial fibrillation and/or anti-coagulation or episodic atrial fibrillation within the last 6 months.
Trial locations and contacts
115 sites in 2 countries.
115 sites in 2 countries
United States106 sites
Center for Vascular Awareness, Inc.
Albany, New York, 12208
Lehigh Valley Hospital
Allentown, Pennsylvania, 18105
University of Michigan
Ann Arbor, Michigan, 48109
Anne Arundel Health System Research Institute
Annapolis, Maryland, 21401
Piedmont Hospital/Fuqua Heart Center
Atlanta, Georgia, 30309
Emory University
Atlanta, Georgia, 30322
St. Joseph's of Atlanta
Atlanta, Georgia, 30342
Johns Hopkins University
Baltimore, Maryland, 21287
Vascular Surgery Associates
Baton Rouge, Louisiana, 70809
Heritage Valley Medical Group
Beaver, Pennsylvania, 15009
The Board of Trustees of the University of Alabama for the University of Alabama at Birmingham
Birmingham, Alabama, 35294
Massachusetts General Hospital
Boston, Massachusetts, 02114
Steward St. Elizabeth's Medical Center of Boston, Inc.
Boston, Massachusetts, 02135
Beth Israel Deaconess Medical Center
Boston, Massachusetts, 02215
Brigham and Womens Hospital, Inc.
Boston, Massachusetts, 02215
Millard Fillmore SUNY Buffalo
Buffalo, New York, 14209
UNC at Chapel Hill
Chapel Hill, North Carolina, 27599
Charleston Area Medical Center
Charleston, West Virginia, 25304
The Charlotte-Mecklenburg Hospital Authority
Charlotte, North Carolina, 28203
University of Virginia
Charlottesville, Virginia, 22908
Norwestern Memorial Hospital
Chicago, Illinois, 60611
Christ Hospital
Cincinnati, Ohio, 45219
University of Cincinnati
Cincinnati, Ohio, 45267
Morton Plant Hospital
Clearwater, Florida, 33756
The Cleveland Clinic Lerner College Of Medicine of CWRU
Cleveland, Ohio, 44195
South Carolina Heart Center
Columbia, South Carolina, 29204
Midwest Ohio Health Research Institute
Columbus, Ohio, 43214
The University of Texas Southwestern Medical Center at Dallas
Dallas, Texas, 75390
Geisinger Medical Center
Danville, Pennsylvania, 17822
Catholic Health Initiatives /Mercy Hospital Center
Des Moines, Iowa, 50314
Henry Ford Health System
Detroit, Michigan, 48202
St. John Hospital and Medical Center
Detroit, Michigan, 48236
Duke University Medical Center
Durham, North Carolina, 27710
Alexian Brothers Specialty Group
Elk Grove Village, Illinois, 60007
Michigan Vascular Research Center
Flint, Michigan, 48507
Lutheran Medical Group, LLC,
Fort Wayne, Indiana, 46804
Parkview Hospital, Inc.
Fort Wayne, Indiana, 46805
Spectrum Health Hospital
Grand Rapids, Michigan, 49503
Houston Methodist Hospital
Houston, Texas, 77030
UT Houston Memorial
Houston, Texas, 77030
Cape Cod Health Care, Inc.,
Hyannis, Massachusetts, 02601
St. Vincent's Hospital
Indianapolis, Indiana, 46260
Mississippi Baptist Medical Center, Inc.
Jackson, Mississippi, 39202
Mayo Clinic
Jacksonville, Florida, 32224
Heartland Physician Services, LLC
Kansas City, Missouri, 64114
Metro Knoxville HMA
Knoxville, Tennessee, 37920
Dartmouth College and the constituent members of DARTMOUTH HITCHCOCK MEDICAL CENTER
Lebanon, New Hampshire, 03756
Leesburg Medical Center
Leesburg, Florida, 34748
Baptist Healthcare System, Inc.
Lexington, Kentucky, 40504
Board of Trustees of the University of Arkansas
Little Rock, Arkansas, 72701
USC University Hospital & LA County Hospital
Los Angeles, California, 90033
The Regents of the University of California
Los Angeles, California, 90095
Marshfield Clinic
Marshfield, Wisconsin, 54449
Loyola University of Chicago
Maywood, Illinois, 60153
Rogue Valley Medical Center
Medford, Oregon, 97504
Baptist Memorial Hospital
Memphis, Tennessee, 38120
Miami Cardiac & Vascular Institute of Baptist Hospital of Miami, Inc.
Miami, Florida, 33187
St. Luke's Medical Center
Milwaukee, Wisconsin, 53215
St. Patrick's Hospital International Heart Institute of MT
Missoula, Montana, 59802
Ochsner Foundation Hospital
New Orleans, Louisiana, 70121
NYU School of Medicine
New York, New York, 10016
The Feinstein Institute for Medical Research
New York, New York, 10021
Weill Medical College of Cornell University
New York, New York, 10021
Columbia Presbyterian
New York, New York, 10032
Christiana Care Health Services, Inc.
Newark, Delaware, 19718
St. Michael's Medical Center
Newark, New Jersey, 07013
Oklahoma Foundation for Cardiovascular Research
Oklahoma City, Oklahoma, 73120
Florida Hospital Neuroscience Institute, a division of Adventist Health System/Sunbelt, Inc.
Orlando, Florida, 32803
Orlando Regional Medical Center
Orlando, Florida, 32828
Peoria Radiology Research and Education
Peoria, Illinois, 61637
University of Pennsylvania
Philadelphia, Pennsylvania, 19104
Thomas Jefferson University Hospital
Philadelphia, Pennsylvania, 19107
Dignity Health dba St. Joseph's Hospital & Medical Center
Phoenix, Arizona, 85013
Allegheny Singer Research Institute
Pittsburgh, Pennsylvania, 15212
UPMC Presbyterian Shadyside
Pittsburgh, Pennsylvania, 15232
St. Francis Hospital
Port Washington, New York, 11050
Oregon Health Science University
Portland, Oregon, 97201
Rhode Island Hospital
Providence, Rhode Island, 02903
North Memorial Health Care
Robbinsdale, Minnesota, 55422
Mayo Clinic Rochester/St. Mary's
Rochester, Minnesota, 55905
University of Rochester
Rochester, New York, 14642
William Beaumont Hospital
Royal Oak, Michigan, 48075
Intermountain Health Services
Salt Lake City, Utah, 84143
Kaiser Permanente Medical Center
San Diego, California, 92120
Northern California Institute for Research and Education
San Francisco, California, 94121
St. Joseph's Candler Health System
Savannah, Georgia, 31405
Mayo Clinic Arizona
Scottsdale, Arizona, 85259
Swedish Health Services
Seattle, Washington, 98122
Providence St. John Hopital
Southfield, Michigan, 48075
Providence Health & Services - Washington
Spokane, Washington, 99204
Prarie Cardiology-St. John's Hospital
Springfield, Illinois, 62794
Southern Illinois School of Medicine
Springfield, Illinois, 62794
Mercy Hospitals East Communities
St Louis, Missouri, 63141
Richmond University Medical Center
Staten Island, New York, 10310
Catholic Healthcare West
Stockton, California, 95204
Adventist Healthcare, Inc.
Takoma Park, Maryland, 20912
University of South Florida Board of Trustees
Tampa, Florida, 33606
Scott & White Memorial Hospital
Temple, Texas, 76508
The Toledo Hospital
Toledo, Ohio, 43606
University of Toledo
Toledo, Ohio, 43614
The Arizona Board of Regents for the University of Arizona
Tucson, Arizona, 85724
Westchester Medical Center
Valhalla, New York, 10595
Central Dupage Hospital
Winfield, Illinois, 60190
Forsyth Radiological Associates
Winston-Salem, North Carolina, 27103
Wake Forest University
Winston-Salem, North Carolina, 27157
Michigan Heart & Vascular Institute/St. Joseph's Mercy Hospital
Ypsilanti, Michigan, 48197
Canada9 sites
Governors of the University of Calgary and the Calgary Health Region
Calgary, Alberta, T2N 2T9
The Credit Valley Hospital and Trillium Health Centre
Mississauga, Ontario, L5B 4A2
Ottawa Hospital Research Institute
Ottawa, Ontario, K1H1A2
CHU de Québec
Québec, Quebec, G1J1Z4
St. Michael's Hospital
Toronto, Ontario, M5B 1W8
University Health Network
Toronto, Ontario, M5T 2S8
Lawson Health Research Institute
Toronto, Ontario, N6A5A5
The University of British Columbia and The Vancouver Coastal Health Authority
Vancouver, British Columbia, V5Z 3J5
St. Boniface General Hospital
Winnipeg, Manitoba, R2H2A6
About this study
Official title: Carotid Revascularization Endarterectomy Versus Stenting Trial (CREST)
The purpose of the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST) is to compare the relatively new procedure of stent-assisted carotid angioplasty (CAS) to the traditional and accepted surgical approach of carotid endarterectomy (CEA) for the treatment of carotid artery stenosis to prevent recurrent strokes in those patients who have had a TIA (transient ischemic attack) or a mild stroke within the past 6 months (symptomatic) and in those patients who have not had any symptoms within the past 6 months (asymptomatic).
Read the detailed description
The primary aim of the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST) is to contrast the relative effectiveness of carotid artery stenting (CAS) versus carotid endarterectomy (CEA) in preventing stroke, myocardial infarction, and death. Stents are medical devices approved and commonly used for treatment of heart disease. The stent that will be used in this trial is the Rapid Exchange(RX) ACCULINK(TM) Carotid Stent System, an elastic-like metal scaffold that is expanded inside a carotid artery to hold the vessel open.
The RX ACCUNET(TM) Embolic Protection System (an umbrella-like device that expands above the narrowed portion of the carotid artery) will be used in conjunction with the RX ACCULINK stent. The RX ACCUNET system is designed to capture embolic material that could break off from the narrowed area in the carotid artery while still allowing blood to flow through the vessel during the procedure. Embolic material could block blood flow to the arteries beyond the narrowing and be harmful to the brain. The RX ACCUNET System is closed and removed after the stent is placed.
CEA involves a neck incision and physical removal of the plaque from the inside of the artery. CAS involves insertion of a catheter or tube into an artery in the groin and then threading the catheter through the arteries of the body to the location of the plaque within the carotid artery in the neck. The stent is then placed to cover the plaque and hold the artery open. Participants will be randomly assigned to undergo either CAS or CEA, and all patients will receive best medical management, which includes treatment with aspirin, treatment of high blood pressure, and treatment of other stroke risk factors. Participants will be followed for up to ten years.
With the simplification of the protocol for long-term follow-up, the focus for secondary outcomes is to assess restenosis and viability of the procedure. Restenosis rates on an annual basis in both the endarterectomy and stenting arms of the study will be assessed using carotid duplex ultrasound exams performed annually (standard of care).
In addition to restenosis, the "viability" of the procedures will be assessed by the need (or lack of need) for repeat revascularization (either open surgical or endovascular) after the index procedure. The question "has a new carotid intervention been performed since last follow-up" will be asked at every contact with the patient. If answered positively, additional data will be collected on the appropriate case report forms(CRFs).
LINKAGE OF CREST COHORT WITH CENTERS FOR MEDICAID AND MEDICARE SERVICES(CMS) ADMINISTRATIVE DATA
The purpose of linking Medicare-eligible CREST participants with CMS data files is to assess patient outcomes and utilization of health care services. This plan to link in- and out-patient episodes of care using national Medicare data establishes a new resource that will enhance current follow-up strategies, as well as explore alternative strategies to ascertain patient outcomes for future clinical studies.
- Being tested
- Carotid Endarterectomy (CEA), Carotid Artery Stenting (CAS)
- Keywords
- angioplasty, asymptomatic, atherosclerosis, carotid endarterectomy, carotid stenting, CREST, Cerebral Infarction, device, intervention, restenosis, revascularization, stenosis, stent, stroke, symptomatic, surgery, transient ischemic attack
- Medical subject headings
- Atherosclerosis, Stroke, Carotid Stenosis, Cerebral Infarction, Myocardial Infarction, Constriction, Pathologic, Ischemic Attack, Transient
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Carotid Endarterectomy (CEA)Procedure or surgery
CEA involves a neck incision and physical removal of the plaque from the inside of the carotid artery.
Carotid Artery Stenting (CAS)Device
Also called Angioplasty of carotid artery and stent placement.
CAS involves insertion of a catheter or tube into an artery in the groin and then threading the catheter through the arteries of the body to the location of the plaque within the carotid artery in the neck. A stent is then placed to cover the plaque and hold the artery open. Participants randomized to this arm of the trial were treated using the RX Acculink Carotid Stent with or without the RX Accunet Embolic Protection Device.
| Study group | Role | What they receive |
|---|---|---|
| Carotid Artery Endarterectomy (CEA) | Active comparator | Carotid endarterectomy is surgery to remove plaque buildup that causes narrowing (stenosis) in the carotid artery. Receives: Procedure: Carotid Endarterectomy (CEA) |
| Carotid Artery Stenting (CAS) | Active comparator | Carotid artery stenting (CAS) is a procedure used to open narrowed carotid arteries. During the procedure, a small, expandable wire tube called a stent is permanently inserted into the carotid artery. Receives: Device: Carotid Artery Stenting (CAS) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Any Periprocedural Stroke, Myocardial Infarction, or Death During a 30-day Peri-procedural Period, and Postprocedural Ipsilateral Stroke Thereafter, up to 4-years.
The primary aim of CREST is to assess if the efficacy of CAS differs from that of CEA in preventing stroke, myocardial infarction and death during a 30-day peri-procedural period, or ipsilateral stroke over the follow-up period in patients with symptomatic (>=50%) or asymptomatic (>=60%) extracranial carotid stenosis. Four-year follow-up, proportions reflecting the absolute efficacy of carotid-artery stenting (CAS) over that of carotid endarterectomy (CEA) were based on Kaplan-Meier survival estimates at the end of the 4 years.
Measured: 30 days and 4 years
Secondary outcomes (1)
Differential Efficacy of CAS and CEA in Male and Female Participants in the Primary Endpoint (Any Periprocedural Stroke, Myocardial Infarction, or Death or Postprocedural Ipsilateral Stroke).
4-year follow-up, proportions reflecting the absolute efficacy of carotid-artery stenting (CAS) over that of carotid endarterectomy (CEA) were based on Kaplan-Meier survival estimates at the end of the 4 years.
Measured: 4 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Feb 2000 (estimated)
- Study startDec 2000
- Primary completionFeb 2011
- Study completionDec 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (43)Papers the sponsor has linked to this study.
- Other trials for AtherosclerosisStudies of the same condition, open and under way.
- More trials run by Rutgers, The State University of New JerseyThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Investigator, Outcomes assessor
- Enrolment
- 2,502 participants (actual)
Sponsor and investigators
- Lead sponsor
- Rutgers, The State University of New Jersey
- Sponsor type
- University, hospital or other
- Collaborators
- National Institute of Neurological Disorders and Stroke (NINDS), University of Alabama at Birmingham
- Responsible party
- Sponsor
- Investigators
- Thomas G. Brott, M.D., Principal investigator, Mayo Clinic and Rutgers University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00004732
- Sponsor's protocol ID
- 0119970017
- Other IDs
- R01NS038384
- Acronym
- CREST
- Status last verified
- Apr 2017
- First submitted
- 25 Feb 2000
- Last updated
- 17 May 2017
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
- Individual data sharing
- No
Publications
Hopkins LN, Roubin GS, Chakhtoura EY, Gray WA, Ferguson RD, Katzen BT, Rosenfield K, Goldstein J, Cutlip DE, Morrish W, Lal BK, Sheffet AJ, Tom M, Hughes S, Voeks J, Kathir K, Meschia JF, Hobson RW 2nd, Brott TG. The Carotid Revascularization Endarterectomy versus Stenting Trial: credentialing of interventionalists and final results of lead-in phase. J Stroke Cerebrovasc Dis. 2010 Mar;19(2):153-62. doi: 10.1016/j.jstrokecerebrovasdis.2010.01.001.
PubMed 20189092Howard VJ, Voeks JH, Lutsep HL, Mackey A, Milot G, Sam AD 2nd, Tom M, Hughes SE, Sheffet AJ, Longbottom M, Avery JB, Hobson RW 2nd, Brott TG. Does sex matter? Thirty-day stroke and death rates after carotid artery stenting in women versus men: results from the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST) lead-in phase. Stroke. 2009 Apr;40(4):1140-7. doi: 10.1161/STROKEAHA.108.541847. Epub 2009 Feb 10.
PubMed 19211486Sheffet AJ, Roubin G, Howard G, Howard V, Moore W, Meschia JF, Hobson RW 2nd, Brott TG. Design of the Carotid Revascularization Endarterectomy vs. Stenting Trial (CREST). Int J Stroke. 2010 Feb;5(1):40-6. doi: 10.1111/j.1747-4949.2009.00405.x.
PubMed 20088993Lal BK, Brott TG. The Carotid Revascularization Endarterectomy vs. Stenting Trial completes randomization: lessons learned and anticipated results. J Vasc Surg. 2009 Nov;50(5):1224-31. doi: 10.1016/j.jvs.2009.09.003.
PubMed 19878793Hobson RW 2nd, Brott TG, Roubin GS, Silver FL, Barnett HJ. Carotid artery stenting: meeting the recruitment challenge of a clinical trial. Stroke. 2005 Jun;36(6):1314-5. doi: 10.1161/01.STR.0000165919.26944.05. Epub 2005 Apr 28. No abstract available.
PubMed 15860747Hobson RW 2nd, Howard VJ, Roubin GS, Brott TG, Ferguson RD, Popma JJ, Graham DL, Howard G; CREST Investigators. Carotid artery stenting is associated with increased complications in octogenarians: 30-day stroke and death rates in the CREST lead-in phase. J Vasc Surg. 2004 Dec;40(6):1106-11. doi: 10.1016/j.jvs.2004.10.022.
PubMed 15622363Hobson RW 2nd, Howard VJ, Roubin GS, Ferguson RD, Brott TG, Howard G, Sheffet AJ, Roberts J, Hopkins LN, Moore WS; CREST. Credentialing of surgeons as interventionalists for carotid artery stenting: experience from the lead-in phase of CREST. J Vasc Surg. 2004 Nov;40(5):952-7. doi: 10.1016/j.jvs.2004.08.039.
PubMed 15557910Hobson RW 2nd, Howard VJ, Brott TG, Howard G, Roubin GS, Ferguson RD; For the CREST Executive Committee. Organizing the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST): National Institutes of Health, Health Care Financing Administration, and industry funding. Curr Control Trials Cardiovasc Med. 2001 Jul 13;2(4):160-164. doi: 10.1186/cvm-2-4-160.
PubMed 11806790Hobson RW 2nd, Brott T, Ferguson R, Roubin G, Moore W, Kuntz R, Howard G, Ferguson J. CREST: carotid revascularization endarterectomy versus stent trial. Cardiovasc Surg. 1997 Oct;5(5):457-8. doi: 10.1177/096721099700500504. No abstract available.
PubMed 9464598Brott TG, Hobson RW 2nd, Howard G, Roubin GS, Clark WM, Brooks W, Mackey A, Hill MD, Leimgruber PP, Sheffet AJ, Howard VJ, Moore WS, Voeks JH, Hopkins LN, Cutlip DE, Cohen DJ, Popma JJ, Ferguson RD, Cohen SN, Blackshear JL, Silver FL, Mohr JP, Lal BK, Meschia JF; CREST Investigators. Stenting versus endarterectomy for treatment of carotid-artery stenosis. N Engl J Med. 2010 Jul 1;363(1):11-23. doi: 10.1056/NEJMoa0912321. Epub 2010 May 26.
PubMed 20505173Mantese VA, Timaran CH, Chiu D, Begg RJ, Brott TG; CREST Investigators. The Carotid Revascularization Endarterectomy versus Stenting Trial (CREST): stenting versus carotid endarterectomy for carotid disease. Stroke. 2010 Oct;41(10 Suppl):S31-4. doi: 10.1161/STROKEAHA.110.595330.
PubMed 20876500Silver FL, Mackey A, Clark WM, Brooks W, Timaran CH, Chiu D, Goldstein LB, Meschia JF, Ferguson RD, Moore WS, Howard G, Brott TG; CREST Investigators. Safety of stenting and endarterectomy by symptomatic status in the Carotid Revascularization Endarterectomy Versus Stenting Trial (CREST). Stroke. 2011 Mar;42(3):675-80. doi: 10.1161/STROKEAHA.110.610212. Epub 2011 Feb 9.
PubMed 21307169Blackshear JL, Cutlip DE, Roubin GS, Hill MD, Leimgruber PP, Begg RJ, Cohen DJ, Eidt JF, Narins CR, Prineas RJ, Glasser SP, Voeks JH, Brott TG; CREST Investigators. Myocardial infarction after carotid stenting and endarterectomy: results from the carotid revascularization endarterectomy versus stenting trial. Circulation. 2011 Jun 7;123(22):2571-8. doi: 10.1161/CIRCULATIONAHA.110.008250. Epub 2011 May 23.
PubMed 21606394Vilain KR, Magnuson EA, Li H, Clark WM, Begg RJ, Sam AD 2nd, Sternbergh WC 3rd, Weaver FA, Gray WA, Voeks JH, Brott TG, Cohen DJ; CREST Investigators. Costs and cost-effectiveness of carotid stenting versus endarterectomy for patients at standard surgical risk: results from the Carotid Revascularization Endarterectomy Versus Stenting Trial (CREST). Stroke. 2012 Sep;43(9):2408-16. doi: 10.1161/STROKEAHA.112.661355. Epub 2012 Jul 19.
PubMed 22821614Lal BK, Beach KW, Roubin GS, Lutsep HL, Moore WS, Malas MB, Chiu D, Gonzales NR, Burke JL, Rinaldi M, Elmore JR, Weaver FA, Narins CR, Foster M, Hodgson KJ, Shepard AD, Meschia JF, Bergelin RO, Voeks JH, Howard G, Brott TG; CREST Investigators. Restenosis after carotid artery stenting and endarterectomy: a secondary analysis of CREST, a randomised controlled trial. Lancet Neurol. 2012 Sep;11(9):755-63. doi: 10.1016/S1474-4422(12)70159-X. Epub 2012 Aug 2.
PubMed 22857850
Study at a glance
From the registry record, last updated by the sponsor on 17 May 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Carotid Revascularization Endarterectomy Versus Stenting Trial (CREST)
- ClinicalTrials.gov ID
- NCT00004732
- Acronym / sponsor ID
- CREST / 0119970017
- Keywords
- angioplasty, asymptomatic, atherosclerosis, carotid endarterectomy, carotid stenting, CREST, Cerebral Infarction, device
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 2,502 participants (actual)
- Lead sponsor
- Rutgers, The State University of New JerseyUniversity, hospital or other
- Collaborators
- National Institute of Neurological Disorders and Stroke (NINDS), University of Alabama at Birmingham
- Study start
- Dec 2000
- Primary completion
- Feb 2011 (actual)
- Study completion
- Dec 2016 (actual)
- First posted
- 28 Feb 2000 (estimated)
- Results
- Posted 10 Dec 2013
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST) is to compare the relatively new procedure of stent-assisted carotid angioplasty (CAS) to the traditional and accepted surgical approach of carotid endarterectomy (CEA) for the treatment of carotid artery stenosis to prevent recurrent strokes in those patients who have had a TIA (transient ischemic attack) or a mild stroke within the past 6 months (symptomatic) and in those patients who have not had any symptoms within the past 6 months (asymptomatic).
Detailed description
The primary aim of the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST) is to contrast the relative effectiveness of carotid artery stenting (CAS) versus carotid endarterectomy (CEA) in preventing stroke, myocardial infarction, and death. Stents are medical devices approved and commonly used for treatment of heart disease. The stent that will be used in this trial is the Rapid Exchange(RX) ACCULINK(TM) Carotid Stent System, an elastic-like metal scaffold that is expanded inside a carotid artery to hold the vessel open.
The RX ACCUNET(TM) Embolic Protection System (an umbrella-like device that expands above the narrowed portion of the carotid artery) will be used in conjunction with the RX ACCULINK stent. The RX ACCUNET system is designed to capture embolic material that could break off from the narrowed area in the carotid artery while still allowing blood to flow through the vessel during the procedure. Embolic material could block blood flow to the arteries beyond the narrowing and be harmful to the brain. The RX ACCUNET System is closed and removed after the stent is placed.
CEA involves a neck incision and physical removal of the plaque from the inside of the artery. CAS involves insertion of a catheter or tube into an artery in the groin and then threading the catheter through the arteries of the body to the location of the plaque within the carotid artery in the neck. The stent is then placed to cover the plaque and hold the artery open. Participants will be randomly assigned to undergo either CAS or CEA, and all patients will receive best medical management, which includes treatment with aspirin, treatment of high blood pressure, and treatment of other stroke risk factors. Participants will be followed for up to ten years.
With the simplification of the protocol for long-term follow-up, the focus for secondary outcomes is to assess restenosis and viability of the procedure. Restenosis rates on an annual basis in both the endarterectomy and stenting arms of the study will be assessed using carotid duplex ultrasound exams performed annually (standard of care).
In addition to restenosis, the "viability" of the procedures will be assessed by the need (or lack of need) for repeat revascularization (either open surgical or endovascular) after the index procedure. The question "has a new carotid intervention been performed since last follow-up" will be asked at every contact with the patient. If answered positively, additional data will be collected on the appropriate case report forms(CRFs).
LINKAGE OF CREST COHORT WITH CENTERS FOR MEDICAID AND MEDICARE SERVICES(CMS) ADMINISTRATIVE DATA
The purpose of linking Medicare-eligible CREST participants with CMS data files is to assess patient outcomes and utilization of health care services. This plan to link in- and out-patient episodes of care using national Medicare data establishes a new resource that will enhance current follow-up strategies, as well as explore alternative strategies to ascertain patient outcomes for future clinical studies.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Carotid Artery Endarterectomy (CEA) | Active comparator | Procedure: Carotid Endarterectomy (CEA)Carotid endarterectomy is surgery to remove plaque buildup that causes narrowing (stenosis) in the carotid artery. |
| Carotid Artery Stenting (CAS) | Active comparator | Device: Carotid Artery Stenting (CAS)Carotid artery stenting (CAS) is a procedure used to open narrowed carotid arteries. During the procedure, a small, expandable wire tube called a stent is permanently inserted into the carotid artery. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Symptomatic patients with recent neurological events (TIA or non-disabling stroke) with an associated carotid stenosis greater than or equal to 50% by angiography or greater than or equal to 70% by ultrasound or greater than or equal to 70% by Computed Tomography Angiography (CTA) or Magnetic Resonance Angiography (MRA) are eligible for randomization.
- Asymptomatic patients with no recent (in the last 6 months) neurological events referable to the study with artery and carotid stenosis (patients with symptoms beyond 180 days are considered asymptomatic) greater than or equal to 60% by angiography or greater than or equal to 70% by ultrasound or greater than or equal to 80% by CTA or MRA are eligible for randomization.
Key exclusion criteria (1 listed)
- Conditions that: (1) interfere with the evaluation of endpoints, (2) are known to interfere with the completion of CEA or CAS, or (3) affect the likelihood of survival for the study period (4 years). Chronic atrial fibrillation and/or anti-coagulation or episodic atrial fibrillation within the last 6 months.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Carotid Endarterectomy (CEA)CEA involves a neck incision and physical removal of the plaque from the inside of the carotid artery. | Procedure or surgery | Carotid Artery Endarterectomy (CEA) |
| Carotid Artery Stenting (CAS)Also: Angioplasty of carotid artery and stent placement.CAS involves insertion of a catheter or tube into an artery in the groin and then threading the catheter through the arteries of the body to the location of the plaque within the carotid artery in the neck. A stent is then placed to cover the plaque and hold the artery open. Participants randomized to this arm of the trial were treated using the RX Acculink Carotid Stent with or without the RX Accunet Embolic Protection Device. | Device | Carotid Artery Stenting (CAS) |
Primary outcome
Any Periprocedural Stroke, Myocardial Infarction, or Death During a 30-day Peri-procedural Period, and Postprocedural Ipsilateral Stroke Thereafter, up to 4-years.
Time frame: 30 days and 4 years
The primary aim of CREST is to assess if the efficacy of CAS differs from that of CEA in preventing stroke, myocardial infarction and death during a 30-day peri-procedural period, or ipsilateral stroke over the follow-up period in patients with symptomatic (>=50%) or asymptomatic (>=60%) extracranial carotid stenosis. Four-year follow-up, proportions reflecting the absolute efficacy of carotid-artery stenting (CAS) over that of carotid endarterectomy (CEA) were based on Kaplan-Meier survival estimates at the end of the 4 years.
1 secondary outcome
Differential Efficacy of CAS and CEA in Male and Female Participants in the Primary Endpoint (Any Periprocedural Stroke, Myocardial Infarction, or Death or Postprocedural Ipsilateral Stroke).
Time frame: 4 years
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 May 2017.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 20189092Hopkins LN, Roubin GS, Chakhtoura EY, Gray WA, Ferguson RD, Katzen BT, Rosenfield K, Goldstein J, Cutlip DE, Morrish W, Lal BK, Sheffet AJ, Tom M, Hughes S, Voeks J, Kathir K, Meschia JF, Hobson RW 2nd, Brott TG. The Carotid Revascularization Endarterectomy versus Stenting Trial: credentialing of interventionalists and final results of lead-in phase. J Stroke Cerebrovasc Dis. 2010 Mar;19(2):153-62. doi: 10.1016/j.jstrokecerebrovasdis.2010.01.001.
- Background: PubMed 19211486Howard VJ, Voeks JH, Lutsep HL, Mackey A, Milot G, Sam AD 2nd, Tom M, Hughes SE, Sheffet AJ, Longbottom M, Avery JB, Hobson RW 2nd, Brott TG. Does sex matter? Thirty-day stroke and death rates after carotid artery stenting in women versus men: results from the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST) lead-in phase. Stroke. 2009 Apr;40(4):1140-7. doi: 10.1161/STROKEAHA.108.541847. Epub 2009 Feb 10.
- Background: PubMed 20088993Sheffet AJ, Roubin G, Howard G, Howard V, Moore W, Meschia JF, Hobson RW 2nd, Brott TG. Design of the Carotid Revascularization Endarterectomy vs. Stenting Trial (CREST). Int J Stroke. 2010 Feb;5(1):40-6. doi: 10.1111/j.1747-4949.2009.00405.x.
- Background: PubMed 19878793Lal BK, Brott TG. The Carotid Revascularization Endarterectomy vs. Stenting Trial completes randomization: lessons learned and anticipated results. J Vasc Surg. 2009 Nov;50(5):1224-31. doi: 10.1016/j.jvs.2009.09.003.
- Background: PubMed 15860747Hobson RW 2nd, Brott TG, Roubin GS, Silver FL, Barnett HJ. Carotid artery stenting: meeting the recruitment challenge of a clinical trial. Stroke. 2005 Jun;36(6):1314-5. doi: 10.1161/01.STR.0000165919.26944.05. Epub 2005 Apr 28. No abstract available.
- Background: PubMed 15622363Hobson RW 2nd, Howard VJ, Roubin GS, Brott TG, Ferguson RD, Popma JJ, Graham DL, Howard G; CREST Investigators. Carotid artery stenting is associated with increased complications in octogenarians: 30-day stroke and death rates in the CREST lead-in phase. J Vasc Surg. 2004 Dec;40(6):1106-11. doi: 10.1016/j.jvs.2004.10.022.
- Background: PubMed 15557910Hobson RW 2nd, Howard VJ, Roubin GS, Ferguson RD, Brott TG, Howard G, Sheffet AJ, Roberts J, Hopkins LN, Moore WS; CREST. Credentialing of surgeons as interventionalists for carotid artery stenting: experience from the lead-in phase of CREST. J Vasc Surg. 2004 Nov;40(5):952-7. doi: 10.1016/j.jvs.2004.08.039.
- Background: PubMed 11806790Hobson RW 2nd, Howard VJ, Brott TG, Howard G, Roubin GS, Ferguson RD; For the CREST Executive Committee. Organizing the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST): National Institutes of Health, Health Care Financing Administration, and industry funding. Curr Control Trials Cardiovasc Med. 2001 Jul 13;2(4):160-164. doi: 10.1186/cvm-2-4-160.
- Background: PubMed 9464598Hobson RW 2nd, Brott T, Ferguson R, Roubin G, Moore W, Kuntz R, Howard G, Ferguson J. CREST: carotid revascularization endarterectomy versus stent trial. Cardiovasc Surg. 1997 Oct;5(5):457-8. doi: 10.1177/096721099700500504. No abstract available.
- Results publication: PubMed 20505173Brott TG, Hobson RW 2nd, Howard G, Roubin GS, Clark WM, Brooks W, Mackey A, Hill MD, Leimgruber PP, Sheffet AJ, Howard VJ, Moore WS, Voeks JH, Hopkins LN, Cutlip DE, Cohen DJ, Popma JJ, Ferguson RD, Cohen SN, Blackshear JL, Silver FL, Mohr JP, Lal BK, Meschia JF; CREST Investigators. Stenting versus endarterectomy for treatment of carotid-artery stenosis. N Engl J Med. 2010 Jul 1;363(1):11-23. doi: 10.1056/NEJMoa0912321. Epub 2010 May 26.
- Results publication: PubMed 20876500Mantese VA, Timaran CH, Chiu D, Begg RJ, Brott TG; CREST Investigators. The Carotid Revascularization Endarterectomy versus Stenting Trial (CREST): stenting versus carotid endarterectomy for carotid disease. Stroke. 2010 Oct;41(10 Suppl):S31-4. doi: 10.1161/STROKEAHA.110.595330.
- Results publication: PubMed 21307169Silver FL, Mackey A, Clark WM, Brooks W, Timaran CH, Chiu D, Goldstein LB, Meschia JF, Ferguson RD, Moore WS, Howard G, Brott TG; CREST Investigators. Safety of stenting and endarterectomy by symptomatic status in the Carotid Revascularization Endarterectomy Versus Stenting Trial (CREST). Stroke. 2011 Mar;42(3):675-80. doi: 10.1161/STROKEAHA.110.610212. Epub 2011 Feb 9.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Thomas G. Brott, M.D. principal investigator
Mayo Clinic and Rutgers University
115 sites in 2 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Carotid Endarterectomy (CEA) and Carotid Artery Stenting (CAS) in people with Atherosclerosis and Stroke, run by Rutgers, The State University of New Jersey at 115 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 2 inclusion and 1 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 17 May 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 115 sites in United States, Canada. 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 10 Dec 2013). 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?
Any Periprocedural Stroke, Myocardial Infarction, or Death During a 30-day Peri-procedural Period, and Postprocedural Ipsilateral Stroke Thereafter, up to 4-years. (time frame: 30 days and 4 years). 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 NCT00004732, which also lists 43 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 17 May 2017; AzTrials last refreshed its copy on 4 Nov 2026.