CClinicalTrials.gg
Status unknownNCT02544932Updated Sep 9, 2015

Pleotropic Effect of New Oral Anticoagulants

A Phase 3 interventional study of dabigatran and ribaroxaban in Atrial Fibrillation, sponsored by Kyunghee University Medical Center. Status unknown at 1 site in Korea, Republic of. Open to participants aged 40 Years to 85 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2015-09-09.

Sponsored by Kyunghee University Medical Center · Phase 3, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Sep 2015), so the status shown — last known as Not yet recruiting — may be out of date.
Phase
Phase 3
Study type
Interventional
Enrollment
55
Allocation
Randomized
Ages
40 Years to 85 Years
Sex
All
01

Study summary

Atrial fibrillation (AF) has been known to have several pathophysiologic mechanisms including endothelial dysfunction of heart and vessel. This study was designed to determine the efficacy of NOAC therapy in the prevention of endothelial dysfunction and progression of atherosclerosis of AF subjects.

Read the detailed description

The properties of oral, direct inhibitors of factor Xa (e.g. rivaroxaban) and thrombin (e.g. dabigatran) have been examined the haemostasis and thromboembolism management. Preclinical studies have provided evidences for the effects of direct factor Xa or thrombin inhibition beyond anticoagulation, including anti-inflammatory and protective activities in atherosclerotic plaque development . Therefore, this study evaluates the protective effects of NAOC with the reactive hyperemia peripheral arterial tonometry (RH-PAT) measurements reflecting endothelial function by Endo-PAT2000 and intima-media thickness (IMT) of the carotid artery, which is used as a surrogate endpoint of atherosclerosis.

02

Conditions studied

  • Atrial Fibrillation

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Keywords

  • anticoagulant
  • atherosclerosis
  • endothelium
03

In context

Atrial Fibrillation

3,870 studies on the registry are indexed under Atrial Fibrillation; 924 are open to participants now.

This study's planned enrollment of 55 is below the median of 144 across 2,380 interventional studies indexed under Atrial Fibrillation.

Browse Atrial Fibrillation studies →

Lead sponsor

Kyunghee University Medical Center is the lead sponsor of 62 studies on the registry; 5 are open to participants now.

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

04

Who can participate

Ages eligible
40 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • CHA2DS2-VASc score above 2

Exclusion criteria

Exclusion Criteria:

  • severe peripheral arterial disease (greater than a Fontaine IIb category)
  • grade 4 or higher cerebral infarction on the Modified Rankin Scale
  • proven coronary artery disease by coronary angiogram
  • severe hepatic or renal dysfunction
  • uncontrolled congestive heart failure
  • uncontrolled hypertension or diabetes mellitus
  • hematologic disorders
  • allergy or hypersensitivity to the investigational drugs
  • pregnant or lactating women or women wishing to become pregnant
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
55 participants (estimated)

Study arms

  • Experimental
    dabigatran 110mg or 150mg

    After once enrolled, subjects will be randomized to dabigatran group. (110mg or 150mg twice a day)

    Drug: dabigatran

  • Experimental
    ribaroxaban 20mg

    After once enrolled, subjects will be randomized to ribaroxaban group. (20mg once daily)

    Drug: ribaroxaban

  • Active comparator
    warfarin

    After once enrolled, subjects will be randomized to warfarin group. (controlled by INR 2-3)

    Drug: Warfarin

Interventions

  • Drugdabigatran

    After randomization, patients of this group was will be treated to dabigatran 110mg or 150mg twice a day for 24months

    Also known as: pradaxa

  • Drugribaroxaban

    After randomization, patients of this group was will be treated to ribaroxaban 20mg once a day for 24months.

    Also known as: xarelto

  • DrugWarfarin

    After randomization, patients of this group was will be treated to warfarin and controlled by INR 2-3 for 24months.

06

What researchers measure

Primary outcomes

  1. The changes in reactive hyperemia index (RHI)

    Time frame: 12months

Secondary outcomes

  1. right and left maximum IMT of the common carotid artery (CCA)

    Time frame: 24months

  2. right and left mean IMT of the common carotid artery (CCA)

    Time frame: 24months

  3. adverse events

    Time frame: 24months

07

Study locations

1 site
  • Kyung Hee University
    Seoul, 130-702, Korea, Republic of
08

References and documents

Publications

  • Kim JB, Joung HJ, Lee JM, Woo JS, Kim WS, Kim KS, Lee KH, Kim W. Evaluation of the vascular protective effects of new oral anticoagulants in high-risk patients with atrial fibrillation (PREFER-AF): study protocol for a randomized controlled trial. Trials. 2016 Aug 24;17(1):422. doi: 10.1186/s13063-016-1541-8. PubMed 27558002 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 9, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02544932
Lead sponsor
Kyunghee University Medical Center
Responsible party
Weon Kim (professor, Kyunghee University Medical Center) — Principal investigator
First posted
Sep 9, 2015
Start date
Oct 2015
Primary completion
Sep 2017 (estimated)
Completion
Sep 2017 (estimated)
Last update
Sep 9, 2015

Study contacts

Weon Kim, MD, PhD
Contact
mylovekw@hanmail.net
82-2-958-8170
Jin-Bae Kim, MD, PhD
Contact
jinbbai@khu.ac.kr
82-2-958-8167
Weon Kim, MD, PhD
principal investigator · Kyunghee University Medical Center

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Sep 2015. You cannot join it, but the record below documents what was studied.

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