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Optimal Antithrombotic Therapy in Ischemic Stroke Patients With Non-Valvular Atrial Fibrillation and Atherothrombosis (ATIS-NVAF)

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ClinicalTrials.gov Identifier: NCT03062319
Recruitment Status : Recruiting
First Posted : February 23, 2017
Last Update Posted : October 12, 2020
Sponsor:
Collaborators:
Network for Clinical Stroke Trials
The BMS/Pfizer Japan Thrombosis Investigator Initiated Research Program
Information provided by (Responsible Party):
Hiroshi Yamagami, National Hospital Organization Osaka National Hospital

Study Description
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Brief Summary:
The Purpose of this open-label randomized controlled multicenter trial is to evaluate the efficacy and safety of mono-drug therapy with oral anticoagulant compared to combination therapy with antiplatelet drug, in ischemic stroke patients with non-valvular atrial fibrillation and atherothrombosis.

Condition or disease Intervention/treatment Phase
Ischemic Stroke Atrial Fibrillation Atherothrombosis Drug: Oral Anticoagulant Drug: Antiplatelet Drug Phase 4

Detailed Description:
The Purpose of this open-label randomized controlled multicenter trial is to evaluate the efficacy and safety of mono-drug therapy with oral anticoagulant compared to combination therapy with antiplatelet drug, in ischemic stroke patients with non-valvular atrial fibrillation and atherothrombosis. Target sample size is 400. The primary outcome is a composite endpoint of ischemic cardiovascular events (cardiovascular death, ischemic stroke, myocardial infarction, systemic embolism, ischemic events requiring urgent revascularization) and major bleeding defined by the International Society on Thrombosis and Haemostasis(ISTH) criteria within 2 years after randomization.
Study Design
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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 400 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Optimal Antithrombotic Therapy in Ischemic Stroke Patients With Non-Valvular Atrial Fibrillation and Atherothrombosis
Actual Study Start Date : April 6, 2017
Estimated Primary Completion Date : April 30, 2022
Estimated Study Completion Date : April 30, 2026

Resource links provided by the National Library of Medicine


Arms and Interventions
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Arm Intervention/treatment
Active Comparator: Dual-therapy group
Dual-therapy group: single anticoagulant drug and single antiplatelet drug. The dosage is determined according to each drug's package insert in Japan. In patients treated with warfarin, the target international normalized ratio (INR) range of 2.0-3.0 for those <70 years and 1.6-2.6 for those =>70 years is recommended according to the Japanese guidelines.
 Drug: Oral Anticoagulant
warfarin, dabigatran, rivaroxaban, apixaban, or edoxaban

Drug: Antiplatelet Drug
aspirin, clopidogrel, prasugrel, ticlopidine, or cilostazol
Active Comparator: Single-therapy group
Single-therapy group: single anticoagulant drug. The dosage is determined according to each drug's package insert in Japan. In patients treated with warfarin, the target international normalized ratio (INR) range of 2.0-3.0 for those <70 years and 1.6-2.6 for those =>70 years is recommended according to the Japanese guidelines.
 Drug: Oral Anticoagulant
warfarin, dabigatran, rivaroxaban, apixaban, or edoxaban


Outcome Measures
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Primary Outcome Measures :
  1. Composite endpoint of ischemic cardiovascular events and major bleeding [ Time Frame: 2 years after randomization ]
    One of the following ischemic cardiovascular events (cardiovascular death, ischemic stroke, myocardial infarction, systemic embolism, or ischemic events requiring urgent revascularization), or major bleeding defined by the International Society on Thrombosis and Haemostasis (ISTH) criteria


Secondary Outcome Measures :
  1. All-cause mortality [ Time Frame: 2 years after randomization ]
    All-cause mortality

  2. Ischemic cardiovascular events [ Time Frame: 2 years after randomization ]
    Ischemic cardiovascular events (cardiovascular death, ischemic stroke, myocardial infarction, systemic embolism, ischemic events requiring urgent revascularization)

  3. All ischemic cardiovascular events including transient ischemia [ Time Frame: 2 years after randomization ]
    All ischemic cardiovascular events including transient ischemia (cardiovascular death, ischemic stroke, transient ischemic attack (TIA), myocardial infarction, unstable angina pectoris, systemic embolism, progression of symptomatic peripheral artery disease, ischemic events requiring urgent revascularization)

  4. Ischemic stroke [ Time Frame: 2 years after randomization ]
    Ischemic stroke

  5. Myocardial infarction and cardiovascular death [ Time Frame: 2 years after randomization ]
    Myocardial infarction and cardiovascular death

  6. major bleeding [ Time Frame: 2 years after randomization ]
    major bleeding defined by the International Society on Thrombosis and Haemostasis (ISTH) criteria

  7. Intracranial hemorrhage [ Time Frame: 2 years after randomization ]
    Intracranial hemorrhage


Eligibility Criteria
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Ages Eligible for Study:   20 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  1. Patients with an acute ischemic stroke or TIA from 8 days and up to 360 days from the onset of symptoms
  2. Age 20 or older
  3. Patients with non-valvular atrial fibrillation (chronic or paroxysmal) who start or continue taking an oral anticoagulant

  4. Patients who have one of the following atherothrombotic diseases

    1. A past history of ischemic heart disease (myocardial infarction, angina pectoris, coronary artery bypass graft (CABG), percutaneous coronary intervention (PCI)
    2. A past history of peripheral artery disease (symptomatic peripheral arterial occlusive disease, lower extremity bypass surgery/angioplasty/stenting)
    3. Carotid artery stenosis (symptomatic or asymptomatic (=>50% diameter), a history of carotid artery stenting (CAS) or carotid endarterectomy (CEA))
    4. Intracranial artery stenosis (=>50% stenosis of the diameter of a major intracranial artery: intracranial internal carotid artery, anterior cerebral artery (ACA)-A1 and A2, middle cerebral artery (MCA)-M1 and M2, posterior cerebral artery (PCA)-P1 and P2, vertebral artery, and basilar artery; a history of intracranial stent placement or intracranial bypass surgery)
    5. A past history of atherothrombotic brain infarction, lacunar infarction, or branch atheromatous disease
  5. Patients without severe disability (modified Rankin Scale score =<4)
  6. Patients who can take oral medications
  7. Patients who can receive follow-up survey
  8. Provision of written informed consent either directly or by a suitable surrogate

Exclusion Criteria:

  1. History of myocardial infarction or acute coronary syndrome within the past 12 months
  2. Patients who underwent PCI with drug-eluting stents within the past 12 months or PCI with bare-metal stents within the past 3 months
  3. Patients who underwent carotid artery stent placement, intracranial stent placement, or lower extremity stent placement within the past 3 months
  4. History of symptomatic intracranial hemorrhage or gastrointestinal bleeding within the past 6 months
  5. Hemorrhagic diathesis or blood coagulation disorders
  6. Platelet counts <100,000 /mm3 at enrollment.
  7. Severe anemia (hemoglobin <7 g/dL)
  8. Severe renal failure (creatinine clearance =<15 mL/min) or undergoing chronic hemodialysis.
  9. Severe liver dysfunction (Grade B or C of the Child-Pugh classification)
  10. Patients with severe disability requires constant nursing care, bedridden (modified Rankin Scale score =5)
  11. Pregnant or possibly pregnant women
  12. Active cancer
  13. Expectation of survival less than 2 years
  14. Anticoagulant or antiplatelet is scheduled to be discontinued for more than 4 weeks during the follow-up period
  15. Planned revascularization procedure during the follow-up period
  16. Patients who are enrolled in other trials
  17. Patients judged as inappropriate for this study by investigators
Contacts and Locations
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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): NCT03062319


Contacts
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Contact: Hiroshi Yamagami, MD +81-6-6942-1331 yamagami-brain@umin.ac.jp
Contact: Shuhei Okazaki, MD +81-6-6879-3576 s-okazaki@umin.ac.jp

Locations
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Japan
Kobe City Medical Center General Hospital Recruiting
Kobe, Hyogo, Japan, 650-0047
Contact: Nobuyuki Sakai, MD    078-302-7537    n.sakai@siren.ocn.ne.jp   
Contact: Nobuyuki Ohara, MD    078-302-7537    nobuyuki.ohara@gmail.com   
National Hospital Organization Osaka National Hospital Recruiting
Osaka, Japan, 540-0006
Contact: Hiroshi Yamagami, MD    +81-6-6942-1331    yamagami-brain@umin.ac.jp   
Contact: Shuhei Okazaki, MD    +81-6-6879-3576    s-okazaki@umin.ac.jp   
Sponsors and Collaborators
National Hospital Organization Osaka National Hospital
Network for Clinical Stroke Trials
The BMS/Pfizer Japan Thrombosis Investigator Initiated Research Program
Investigators
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Principal Investigator: Hiroshi Yamagami, MD National Hospital Organization Osaka National Hospital
More Information
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Responsible Party: Hiroshi Yamagami, Director, Department of Stroke Neurology, National Hospital Organization Osaka National Hospital
ClinicalTrials.gov Identifier: NCT03062319    
Other Study ID Numbers: ATIS-NVAF
First Posted: February 23, 2017    Key Record Dates
Last Update Posted: October 12, 2020
Last Verified: October 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Undecided

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Hiroshi Yamagami, National Hospital Organization Osaka National Hospital:
anticoagulant
antiplatelet
Additional relevant MeSH terms:
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Stroke
Ischemic Stroke
Cerebral Infarction
Atrial Fibrillation
Ischemia
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
 Cardiovascular Diseases
Arrhythmias, Cardiac
Heart Diseases
Pathologic Processes
Brain Infarction
Brain Ischemia
Infarction
Necrosis
Anticoagulants
Platelet Aggregation Inhibitors