CClinicalTrials.gg
Active, not recruitingNCT05047172CAPTIVAUpdated Sep 25, 2026

Comparison of Anti-coagulation and Anti-Platelet Therapies for Intracranial Vascular Atherostenosis

A Phase 3 interventional study of Ticagrelor + Aspirin and Rivaroxaban + Aspirin in Intracranial Arteriosclerosis and Stroke, sponsored by University of Florida. Active, not recruiting at 114 sites in United States. Open to participants aged 30 Years and older. Per ClinicalTrials.gov, last updated 2026-09-25.

Sponsored by University of Florida · Phase 3, Interventional, and Prevention

Phase
Phase 3
Study type
Interventional
Enrollment
1,683
Allocation
Randomized
Ages
30 Years and older
Sex
All
01

Study summary

The primary goal of the trial is to determine if the experimental arms (rivaroxaban or ticagrelor or both) are superior to the clopidogrel arm for lowering the 1-year rate of ischemic stroke, intracerebral hemorrhage, or vascular death.

Read the detailed description

The proposed study is relevant to public health because narrowing of brain arteries is one of the most common causes of stroke worldwide. Compelling evidence suggests novel antithrombotic medications could reduce the rate of stroke in patients with narrowed brain arteries. The proposed study will directly compare novel antithrombotic medications to standard care antiplatelet medications for preventing stroke and death from vascular causes in patients with narrowed brain arteries.

02

Conditions studied

  • Intracranial Arteriosclerosis
  • Stroke
03

In context

Intracranial Arteriosclerosis

93 studies on the registry are indexed under Intracranial Arteriosclerosis; 41 are open to participants now.

This study's planned enrollment of 1,683 is above the median of 194 across 55 interventional studies indexed under Intracranial Arteriosclerosis.

Browse Intracranial Arteriosclerosis studies →

Lead sponsor

University of Florida is the lead sponsor of 1,254 studies on the registry; 201 are open to participants now.

Of its 170 completed or terminated interventional studies of FDA-regulated products, 136 (80%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
30 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Acute focal symptoms or signs of any duration associated with imaging, pathological, or other objective evidence of arterial infarction OR clinical evidence of cerebral, spinal cord, or retinal focal arterial ischemic injury based on symptoms persisting greater than or equal to 24 hours that occurred within 30 days prior to randomization
  • Index stroke is attributed to 70-99% stenosis (or flow gap on MRA) of a major intracranial artery (carotid artery, middle cerebral artery (M1 or M2), vertebral artery (V4), basilar artery, posterior cerebral artery (P1), or anterior cerebral artery (A1)) documented by CTA, MRA, or catheter angiography
  • Modified Rankin Scale score of ≤ 4, at time of consent
  • Ability to swallow pills
  • At least 30 years of age, inclusive, at time of consent
  • Subjects 30-49 years of age are required to meet at least ONE of the following additional criteria below to qualify for the study:

    1. diabetes treated with insulin for at least 15 years
    2. at least 2 of the following atherosclerotic risk factors: hypertension (BP > 140/90 or on antihypertensive therapy); dyslipidemia (LDL > 130 mg /dl or HDL \< 40 mg/dl or fasting triglycerides > 150 mg/dl or on lipid lowering therapy); smoking; non-insulin dependent diabetes or insulin dependent diabetes of less than 15 years duration; any of the following vascular events occurring in a parent or sibling who was \< 55 years of age for men or \< 65 years of age for women at the time of the event: myocardial infarction, coronary artery bypass, coronary angioplasty or stenting, stroke, carotid endarterectomy or stenting, peripheral vascular surgery for atherosclerotic disease
    3. personal history of any of the following: myocardial infarction, coronary artery bypass, coronary angioplasty or stenting, carotid endarterectomy or stenting, or peripheral vascular surgery for atherosclerotic disease
    4. any stenosis of an extracranial carotid or vertebral artery, another intracranial artery, subclavian artery, coronary artery, iliac or femoral artery, other lower or upper extremity artery, mesenteric artery, or renal artery that was documented by non-invasive vascular imaging or catheter angiography and is considered atherosclerotic
    5. aortic arch atheroma documented by non-invasive vascular imaging or catheter angiography
    6. any aortic aneurysm documented by non-invasive vascular imaging or catheter angiography that is considered atherosclerotic
  • Negative pregnancy test in a female who has had any menses in the last 18 months and has not had surgery that would make her unable to become pregnant
  • Subject is willing and able to return for all follow-up evaluations required by the protocol
  • Subject is available by phone
  • Subject understands the purpose and requirements of the study and can make him/herself understood
  • Subject has provided informed consent (use of a LAR is not permitted)

Exclusion criteria

Exclusion Criteria:

  • Previous treatment of qualifying intracranial artery with a stent, angioplasty, or other mechanical device, including mechanical thrombectomy for the qualifying stroke, or plan to perform one of these procedures
  • Plan to perform concomitant endarterectomy, angioplasty or stenting of an extracranial vessel tandem to the symptomatic intracranial stenosis
  • Intracranial tumor (except meningioma) or any intracranial vascular malformation
  • Thrombolytic therapy within 24 hours prior to randomization
  • Progressive neurological signs within 24 hours prior to randomization
  • History of spontaneous non-traumatic intracranial hemorrhage (parenchymal, subarachnoid, subdural, epidural)
  • Intracranial arterial stenosis due to: arterial dissection; MoyaMoya disease; any known vasculitic disease; herpes zoster, varicella zoster or other viral vasculopathy; neurosyphilis; any other intracranial infection; any intracranial stenosis associated with CSF pleocytosis; radiation induced vasculopathy; fibromuscular dysplasia; sickle cell disease; neurofibromatosis; benign angiopathy of central nervous system; postpartum angiopathy; suspected vasospastic process; reversible cerebral vasoconstriction syndrome (RCVS); suspected recanalized embolus
  • Presence of any of the following unequivocal cardiac sources of embolism: chronic or paroxysmal atrial fibrillation, mitral stenosis, mechanical valve, endocarditis, intracardiac clot or vegetation, myocardial infarction within three months, left atrial spontaneous echo contrast
  • Known allergy or contraindication to aspirin, rivaroxaban, clopidogrel, or ticagrelor
  • Uncontrolled severe hypertension (systolic pressure > 180 mm Hg or diastolic pressure > 115 mm Hg), active peptic ulcer disease, major systemic hemorrhage within 30 days prior to randomization, active bleed or bleeding diathesis, platelets \< 100,000, hematocrit \< 30, INR > 1.5, clotting factor abnormality that increases the risk of bleeding, current alcohol or substance abuse, severe liver impairment (AST or ALT > 3 x normal, cirrhosis), or CrCl \< 15 mL/min or on dialysis
  • Major surgery (including stenting of any vessel; open femoral, aortic, or carotid surgery; or cardiac surgery) within previous 30 days prior to randomization or planned in the next 90 days after randomization
  • Any condition other than intracranial arterial stenosis that requires the subject to take any antithrombotic medication other than aspirin (NOTE: exceptions allowed for subcutaneous heparin or enoxaparin for deep vein thrombosis (DVT) prophylaxis)
  • Dementia or psychiatric problem that prevents the subject from following an outpatient program reliably
  • Co-morbid conditions that may limit survival to less than 12 months
  • Pregnancy or of childbearing potential and unwilling to use contraception for the duration of this study, or currently breastfeeding
  • Current or anticipated concomitant oral or intravenous therapy with strong CYP3A4 inhibitors or CYP3A4 substrates that cannot be stopped for the course of this study
  • Enrollment in another study that would conflict with the current study
05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
1,683 participants (estimated)

Study arms

  • Experimental
    Experimental Arm: Ticagrelor and Aspirin

    Ticagrelor (180mg loading dose, then 90mg twice daily) and aspirin (81mg daily)

    Drug: Ticagrelor + Aspirin · Other: Risk Factor Management

  • Active comparator
    Standard of Care Arm: Clopidogrel and Aspirin

    Clopidogrel (600mg loading dose, then 75mg once daily) and aspirin (81mg daily)

    Drug: Clopidogrel + Aspirin · Other: Risk Factor Management

  • Experimental
    Experimental Arm: Rivaroxaban and Aspirin

    Rivaroxaban (2.5mg twice daily) and aspirin (81mg daily)

    Drug: Rivaroxaban + Aspirin · Other: Risk Factor Management

Interventions

  • DrugTicagrelor + Aspirin

    ticagrelor (180 mg loading dose, then 90mg twice daily) and aspirin (81mg daily)

    Also known as: Brilinta

  • DrugRivaroxaban + Aspirin

    low dose rivaroxaban (2.5mg twice daily) and aspirin (81mg daily)

    Also known as: Xarelto

  • DrugClopidogrel + Aspirin

    clopidogrel (600mg loading dose, then 75mg daily) and aspirin (81mg daily)

    Also known as: Plavix

  • OtherRisk Factor Management

    Risk factors for stroke (LDL, blood pressure, non-HDL cholesterol, diabetes, smoking, weight, and physical activity) will be monitored and managed.

06

What researchers measure

Primary outcomes

  1. Number of participants with parenchymal ICH or non-ICH major hemorrhage

    Non-ICH major hemorrhage is derived from the International Society on Thrombosis and Haemostasis (ISTH) criteria consisting of any of the following: * Fatal bleeding * Symptomatic bleeding in a critical area or organ, such as subarachnoid, intraventricular, subdural, epidural, spinal, intraocular, retroperitoneal, intra-articular or pericardial, or intramuscular with compartment syndrome * Symptomatic bleeding causing a fall in hemoglobin level of 1.24 mmol/L (20g/L or greater) or more, or leading to transfusion of two units or more of whole blood or red cells

    Time frame: Up to 12 months

  2. Number of participants with ischemic stroke, intracerebral hemorrhage or vascular death

    The definition of ischemic stroke is the American Heart Association definition that includes acute focal signs or symptoms of cerebral, spinal cord, or retinal involvement of any duration associated with imaging, pathological, or other objective evidence of arterial infarction OR clinical evidence of cerebral, spinal cord, or retinal focal arterial ischemic injury based on symptoms persisting greater than or equal to 24 hours.

    Time frame: Up to 12 months

07

Study locations

114 sites
  • University of Alabama Hospital
    Birmingham, Alabama 35233, United States
  • University of South Alabama University Hospital
    Mobile, Alabama 36604, United States
  • St. Joseph's Hospital and Medical Center
    Phoenix, Arizona 85013, United States
  • Mercy San Juan Medical Center
    Carmichael, California 95608, United States
  • The Neuron Clinic - Chula Vista
    Chula Vista, California 91910, United States
  • Kaiser Permanente Fontana Medical Center
    Fontana, California 92335, United States
  • Long Beach Memorial Medical Center
    Long Beach, California 90806, United States
  • Los Alamitos Medical Center
    Los Alamitos, California 90720, United States
  • Kaiser Permanente Los Angeles Medical Center
    Los Angeles, California 90027, United States
  • Ronald Reagan UCLA Medical Center, Los Angeles, CA
    Los Angeles, California 90095, United States
  • UC Irvine Medical Center
    Orange, California 92868, United States
  • UC Davis Medical Center
    Sacramento, California 95817, United States
  • Salinas Valley Memorial Hospital
    Salinas, California 93901, United States
  • UCSD Medical Center - Hillcrest Hospital
    San Diego, California 92103, United States
  • Providence Little Company of Mary Medical Center Torrance
    Torrance, California 90503, United States
  • University of Colorado Hospital
    Aurora, Colorado 80045, United States
  • St. Mary's Medical Center
    Grand Junction, Colorado 81501, United States
  • Hartford Hospital
    Hartford, Connecticut 06102, United States
  • Yale New Haven Hospital
    New Haven, Connecticut 06520, United States
  • MedStar Washington Hospital Center
    Washington D.C., District of Columbia 20010, United States
  • Morton Plant Hospital
    Clearwater, Florida 33756, United States
  • UF Health Shands Hospital
    Gainesville, Florida 32608, United States
  • Baptist Medical Center Jacksonville
    Jacksonville, Florida 32207, United States
  • Mayo Clinic
    Jacksonville, Florida 32224, United States
  • Jackson Memorial Hospital
    Miami, Florida 33136, United States
  • Cleveland Clinic Tradition Hospital
    Port Saint Lucie, Florida 34987, United States
  • Tampa General Hospital
    Tampa, Florida 33606, United States
  • Emory University Hospital
    Atlanta, Georgia 30303, United States
  • Grady Memorial Hospital
    Atlanta, Georgia 30303, United States
  • Augusta University Medical Center
    Augusta, Georgia 30912, United States
  • Memorial Hospital of Carbondale
    Carbondale, Illinois 62901, United States
  • Rush University Medical Center
    Chicago, Illinois 60612, United States
  • University of Illinois Hospital
    Chicago, Illinois 60612, United States
  • University of Chicago Medical Center
    Chicago, Illinois 60637, United States
  • Evanston Hospital
    Evanston, Illinois 60201, United States
  • Advocate Christ Medical Center
    Oak Lawn, Illinois 60453, United States
  • Javon Bea Hospital - Riverside
    Rockford, Illinois 61114, United States
  • University of Kansas Hospital
    Kansas City, Kansas 66160, United States
  • Baptist Health Lexington
    Lexington, Kentucky 40503, United States
  • University of Kentucky Hospital
    Lexington, Kentucky 40536, United States
  • Ochsner Medical Center - Main Campus
    New Orleans, Louisiana 70121, United States
  • University of Maryland Medical Center
    Baltimore, Maryland 21201, United States
  • Massachusetts General Hospital
    Boston, Massachusetts 02114, United States
  • Brigham and Women's Hospital
    Boston, Massachusetts 02115, United States
  • Boston Medical Center
    Boston, Massachusetts 02118, United States
  • Beth Israel Deaconess Medical Center
    Boston, Massachusetts 02215, United States
  • UMass Memorial Medical Center
    Worcester, Massachusetts 01655, United States
  • Henry Ford Hospital
    Detroit, Michigan 48202, United States
  • McLaren Flint
    Flint, Michigan 48532, United States
  • McLaren Macomb
    Mount Clemens, Michigan 48043, United States
  • Metro Health Hospital
    Wyoming, Michigan 49519, United States
  • M Health Fairview Southdale Hospital
    Edina, Minnesota 55414, United States
  • Abbott Northwestern Hospital
    Minneapolis, Minnesota 55407, United States
  • M Health Fairview University of Minnesota Medical Center
    Minneapolis, Minnesota 55415, United States
  • University of Mississippi Medical Center
    Jackson, Mississippi 39216, United States
  • University of Missouri Health Care
    Columbia, Missouri 65212, United States
  • Barnes Jewish Hospital
    St Louis, Missouri 62269, United States
  • University of Nebraska Medical Center
    Omaha, Nebraska 68198, United States
  • Cooper University Hospital
    Camden, New Jersey 08103, United States
  • Jersey Shore University Medical Center
    Neptune City, New Jersey 07753, United States
  • Valley Hospital
    Ridgewood, New Jersey 07450, United States
  • University of New Mexico Hospital
    Albuquerque, New Mexico 87106, United States
  • Kings County Hospital Center
    Brooklyn, New York 11203, United States
  • SUNY Downstate Medical Center
    Brooklyn, New York 11203, United States
  • NYU Langone Hospital - Brooklyn
    Brooklyn, New York 11220, United States
  • Buffalo General Medical Center
    Buffalo, New York 14202, United States
  • North Shore University Hospital
    Lake Success, New York 11042, United States
  • NYP Weill Cornell Medical Center
    New York, New York 10021, United States
  • The Mount Sinai Hospital
    New York, New York 10029, United States
  • NYP Columbia University Medical Center
    New York, New York 10032, United States
  • Strong Memorial Hospital
    Rochester, New York 14642, United States
  • Montefiore Medical Center
    The Bronx, New York 10467, United States
  • Carolinas Medical Center
    Charlotte, North Carolina 28207, United States
  • Duke University Hospital
    Durham, North Carolina 27710, United States
  • Moses H. Cone Memorial Hospital
    Greensboro, North Carolina 27405, United States
  • ECU Health Medical Center
    Greenville, North Carolina 27834, United States
  • Wake Forest Baptist Medical Center
    Winston-Salem, North Carolina 27157, United States
  • Cleveland Clinic Akron General
    Akron, Ohio 44307, United States
  • Good Samaritan Hospital
    Cincinnati, Ohio 45220, United States
  • University of Cincinnati Medical Center
    Cincinnati, Ohio 45267, United States
  • UH Cleveland Medical Center
    Cleveland, Ohio 44106, United States
  • Cleveland Clinic
    Cleveland, Ohio 44195, United States
  • OSU Wexner Medical Center
    Columbus, Ohio 43210, United States
  • Toledo Hospital
    Toledo, Ohio 43606, United States
  • Mercy St. Vincent Medical Center
    Toledo, Ohio 43608, United States
  • OU Medical Center
    Oklahoma City, Oklahoma 73104, United States
  • Providence St. Vincent Medical Center
    Portland, Oregon 97225, United States
  • Oregon Health & Science University Hospital
    Portland, Oregon 97239, United States
  • Jefferson Abington Hospital
    Abington, Pennsylvania 19001, United States
  • UPMC Altoona
    Altoona, Pennsylvania 16601, United States
  • UPMC Hamot
    Erie, Pennsylvania 16550, United States
  • Hospital of the University of Pennsylvania
    Philadelphia, Pennsylvania 19104, United States
  • Thomas Jefferson University Hospital
    Philadelphia, Pennsylvania 19107, United States
  • Temple University Hospital, Philadelphia
    Philadelphia, Pennsylvania 19140, United States
  • UPMC Presbyterian Hospital
    Pittsburgh, Pennsylvania 15213, United States
  • Rhode Island Hospital
    Providence, Rhode Island 02903, United States
  • Medical University of South Carolina University Hospital
    Charleston, South Carolina 29425, United States
  • Prisma Health Richland Hospital
    Columbia, South Carolina 29203, United States
  • Prisma Health Greenville Memorial Hospital
    Greenville, South Carolina 29605, United States
  • Methodist University Hospital
    Memphis, Tennessee 38104, United States

Showing the first 100 of 114 sites.

08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 25, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05047172
Lead sponsor
University of Florida
Collaborators
National Institute of Neurological Disorders and Stroke (NINDS), University of Cincinnati, Medical University of South Carolina, Janssen Scientific Affairs, LLC, AstraZeneca
Responsible party
Sponsor
First posted
Sep 17, 2021
Start date
Aug 2, 2022
Primary completion
Jan 31, 2027 (estimated)
Completion
Jan 31, 2027 (estimated)
Last update
Sep 25, 2026

Study contacts

Brian L. Hoh, MD, MBA
principal investigator · University of Florida
Marc I. Chimowitz, MBChB
principal investigator · Medical University of South Carolina

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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