Suspended

(ADD-ON)The Role of Additional Antiplatelet Therapy in the Ischemic Stroke With Atrial Fibrillation and Co-morbiD Atherosclerosis During edOxaban treatmeNt. (ADD-ON) Study, Multicenter Registry-based Analysis

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What is being collected

Data Collection

Collected from today forward - Prospective
Who is being recruted

Ischemic Stroke+17

+ Arrhythmias, Cardiac

+ Arterial Occlusive Diseases

Over 20 Years
See all eligibility criteria
How is the trial designed

Cohort

Tracking disease incidence in order to identify risk factors and understand disease progression over time.
Observational
Study Start: October 2019
See protocol details

Summary

Principal SponsorAsan Medical Center
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: October 8, 2019

Actual date on which the first participant was enrolled.

Although there is a significant increase in the risk of cerebral infarction in the presence of atrial fibrillation, it is difficult to say that all cerebral infarctions occurring in patients with atrial fibrillation are caused by atrial fibrillation. Carotid stenosis is found in 1/4 of patients with atrial fibrillation, which increases the risk of cerebral infarction. Additional antiplatelet therapy to standard anticoagulation therapy should be considered in some patients. To date, the best medical treatment for prevention of cerebral infarction in patients with atrial fibrillation and accompanying atherosclerosis has not been evaluated yet. Edoxaban reduced bleeding complication compared to warfarin in patients with atrial fibrillation. In addition, the ENGAGE AF TIMI-48 study showed a tendency to reduce cerebral infarction (p for interaction = 0.08) when administered in combination with one antiplatelet agent and edoxaban. The administration of antiplatelet agents may be due to patients had accompanying myocardial infarction or cerebral infarction. This group is also thought to have a high risk of bleeding due to high HAS-BLED scores. Nonetheless, there was a similar degree of bleeding in patients receiving additional antiplatelet agents. There was also less bleeding in the warfarin arm than in the use of additional antiplatelet agents. (Major bleeding: 0.19 vs 0.24% / yr; intracranial hemorrhage: 0.43 vs 0.57% / yr) Thus, Edoxaban have good clinical trial results in combination with antiplatelet agents in atrial fibrillation with atherosclerosis compared to other NOACs(new oral anticoagulants). It is also considered to be suitable for combination therapy with antiplatelet agents because of its advantages in different bleeding compared to other warfarin. However, there is no evidence to suggest that Edoxaban alone or in combination with additional antiplatelet agents is better for stroke patients with atrial fibrillation and significant arteriosclerosis.

Official TitleThe Role of Additional Antiplatelet Therapy in the Ischemic Stroke With Atrial Fibrillation and Co-morbiD Atherosclerosis During edOxaban treatmeNt. (ADD-ON) Study, Multicenter Registry-based Analysis
NCT04010955
Principal SponsorAsan Medical Center
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

1200 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Cohort

These studies follow a group of individuals with common characteristics (such as a condition or birth year) over a specific period to study health outcomes or exposures.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Over 20 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Ischemic StrokeArrhythmias, CardiacArterial Occlusive DiseasesArteriosclerosisAtrial FibrillationBrain DiseasesCardiovascular DiseasesCentral Nervous System DiseasesIntracranial ArteriosclerosisCerebrovascular DisordersCoronary Artery DiseaseCoronary DiseaseHeart DiseasesNervous System DiseasesPathologic ProcessesPathological Conditions, Signs and SymptomsVascular DiseasesMyocardial IschemiaStrokeIntracranial Arterial Diseases

Criteria

Inclusion Criteria: 1. Patients with acute cerebral infarction or transient ischemic attack within 14 days of symptom onset based on Last Known Normal Time. 2. Patients with non-valvular atrial fibrillation including paroxysmal atrial fibrillation which is eligible for treatment with Edoxaban. 3. Patients with significant atherosclerosis confirmed by imaging tests on the cerebral arteries, coronary arteries, or peripheral arteries and suitable for the use of antiplatelet agents. * Significant intracranial internal stenosis confirmed by CTA or MRA * A history of coronary artery disease, meaningful findings from CTA or CAG Arterial stenosis * Peripheral arterial disease (Ankle-Brachial Index, ABI \<0.9, significant stenosis found in lower limb ultrasonography 3\) Men and women over 20 years old 4) Patients who voluntarily agreed to register the registry Exclusion Criteria: 1. Patients with chronic renal failure (GFR \<30 ml / min) or severe liver damage 2. patients requiring warfarin medication due to prosthetic valve replacement 3. patients with internal bleeding (active internal bleeding) 4. bleeding diathesis 5. History of acute myocardial infarction or received coronary artery procedure within 6 months before screening 6. Patients who have received or are scheduled to undergo carotid stenting within 1 year 7. Currently, two or more antiplatelet agents are required due to arteriosclerosis. 8. Patients whose survival period is expected to be less than 12 months due to serious diseases such as terminal cancer or liver failure 9. Patients who are scheduled for invasive surgery with possible uncontrolled bleeding, including major surgery 10. Women who are pregnant or lactating, do not have contraception during the study 11. A person who is found to be unsuitable for participation in the study due to the clinical laboratory test results or other reasons

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Study Objectives

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

Asan Medical Center

Seoul, South KoreaOpen Asan Medical Center in Google Maps
SuspendedOne Study Center