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Acute Coronary SyndromePhase 4H-REPLACENCT03363035

Safety and Efficacy of LMWH Versus Rivaroxaban in Chinese Patients Hospitalized With Acute Coronary Syndrome

A Phase 4 study testing Rivaroxaban 2.5 mg, Rivaroxaban 5 mg and Enoxaparin in people with Acute Coronary Syndrome and Myocardial Infarction, run by Second Xiangya Hospital of Central South University at 24 sites in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

H-REPLACE trial is a prospective, randomized, open-label, active-controlled, multicenter study in participants with ACS (STEMI or NSTEMI, unstable angina). All eligible participants receiving background treatment of aspirin plus clopidogrel or ticagrelor will be randomly assigned to either oral rivaroxaban 2.5 mg… Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Rivaroxaban 2.5 mg, Rivaroxaban 5 mg and Enoxaparin
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
2,055 participants
Where
24 sitesChina
Study dates
15 Jan 2018to 30 Nov 2021
Phase
Phase 4
Are there results?
None posted in the registry

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

  • Male or female aged ≥ 18 years
  • Diagnosed with ACS (STEMI, NSTEMI, unstable angina)
  • With an indication for short-term combination use of DAPT and enoxaparin.

Who cannot join

  • Already received thrombolytic therapy or revascularization or needing revascularization therapy in 12 hours.
  • With platelet glycoprotein IIb/IIIa receptor antagonist therapy.
  • With increased bleeding risk, such as but not limited to, active internal bleeding, clinically significant bleeding, bleeding at a non-compressible site, or bleeding diathesis within 30 days of randomization; platelet count less than 90,000/μL at screening; intracranial hemorrhage; major surgery, biopsy of a parenchymal organ, or serious trauma within 30 days before randomization; clinically significant gastrointestinal bleeding within 12 months before randomization; an international normalized ratio known to be>1.5 at the time of screening; abciximab bolus or infusion within the preceding 8 hours, or an eptifibatide or tirofiban bolus or infusion within the past 2 hours preceding randomization; or any other condition known to increase the risk of bleeding.
  • Severe concomitant condition or disease, such as cardiogenic shock at the time of randomization, ventricular arrhythmia refractory to treatment at the time of randomization, calculated creatinine clearance b 30 mL/min at screening, known significant liver disease (e.g., acute hepatitis, chronic active hepatitis, cirrhosis), or liver function test abnormalities (confirmed with repeat testing) which would require study drug discontinuation, i.e., aminoleucine transferase (ALT) >5 × the upper limit of the normal range (ULN) or ALT >3 × ULN plus total bilirubin >2 × ULN, prior ischemic stroke or transient ischemia attack, anemia (i.e., hemoglobin < 10 g/ dL= at screening, known clinical history of human immunodeficiency virus infection at screening, substance abuse (drug or alcohol) problem within the previous 6 months or any severe condition such as cancer that would limit life expectancy to less than 6 months.
  • With an indication for long-term oral anticoagulation therapy such as atrial fibrillation, venous thromboembolism, or prior placement of a mechanical heart valve.
  • With other contraindications for use of rivaroxaban and enoxaparin.
  • Enrolled in another clinical study.

Trial locations and contacts

24 sites in 1 country.

24 sites in 1 country

China24 sites
  • The First People's Hospital of Changde City

    Changde, Hunan, 415003

  • Changsha Central Hospital

    Changsha, Hunan, 410004

  • Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University

    Changsha, Hunan, 410005

  • The Forth Hospital of Changsha

    Changsha, Hunan, 410006

  • The First Affiliated Hospital of Hunan University of Chinese Medicine

    Changsha, Hunan, 410007

  • The Second Xiangya Hospital of Central South University

    Changsha, Hunan, 410011

  • The First Hospital of Changsha

    Changsha, Hunan, 410013

  • The Third Xiangya Hospital of Central South University

    Changsha, Hunan, 410013

  • The Third Hospital of Changsha

    Changsha, Hunan, 410015

  • The Second People's Hospital of Hunan Province

    Changsha, Hunan, 430100

  • The First People's Hospital of Chenzhou

    Chenzhou, Hunan, 423000

  • The First Affiliated Hospital of University of South China

    Hengyang, Hunan, 421001

  • The Second Affiliated Hospital of University of South China

    Hengyang, Hunan, 421001

  • The First Affiliated Hospital of Hunan University of Medicine

    Huaihua, Hunan, 418000

  • The First People's Hospital of Huaihua

    Huaihua, Hunan, 418000

  • The First Affiliated Hospital of Jishou University

    Jishou, Hunan, 416000

  • The First People's Hospital of Loudi

    Loudi, Hunan, 417000

  • The Central Hospital of Shaoyang

    Shaoyang, Hunan, 422000

  • Xiangtan Central Hospital

    Xiangtan, Hunan, 411413

  • Xiangxiang People's Hospital

    Xianxiang, Hunan, 411400

  • Yiyang Central Hospital

    Yiyang, Hunan, 413000

  • Yongzhou First People's Hospital

    Yongzhou, Hunan, 425000

  • The First People's Hospital of Yueyang

    Yueyang, Hunan, 414000

  • Zhuzhou Central Hospital

    Zhuzhou, Hunan, 412007

Other trials in China

About this study

Official title: Safety and Efficacy of Low Molecular Weight Heparin Versus Rivaroxaban in Chinese Patients Hospitalized With Acute Coronary Syndrome(H-REPLACE): a Prospective, Randomized, Open-label, Active-controlled, Multicenter Trial

H-REPLACE trial is a prospective, randomized, open-label, active-controlled, multicenter study in participants with ACS (STEMI or NSTEMI, unstable angina). All eligible participants receiving background treatment of aspirin plus clopidogrel or ticagrelor will be randomly assigned to either oral rivaroxaban 2.5 mg twice daily or rivaroxaban 5 mg twice daily or subcutaneous (SC) enoxaparin 1mg/kg twice daily until hospital discharge or 12 hours before revascularization therapy for a maximum of 8 days.

Read the detailed description

Acute coronary syndrome (ACS) is a serious and life threatening condition. Anticoagulation during the acute phase of ACS is effective in reducing ischaemic events. The combination regimen of anticoagulation with dual antiplatelet therapy (DAPT) strategy is more effective than either treatment alone. The most widely used parenteral anticoagulation agent in ACS patients is enoxaparin (1 mg/kg administered subcutaneously twice daily).

Rivaroxaban is a novel oral anticoagulant with potent anti-Xa activity, which might be an attractive alternative drug to enoxaparin. In fact, rivaroxaban was consistently shown to be non-inferior to enoxaparin therapy aimed to reduce the event of recurrent venous thromboembolism. Moreover, the bleeding risk of low dose of rivaroxaban is low and acceptable (1.0-2.5%) during the acute phase of ACS as shown by ATLAS ACS-TIMI 46 Trial, and the bleeding risk of enoxaparin during the acute phase of ACS was 4.3% as shown in a meta-analysis.

We thus hypothesized that the safety and efficacy of rivaroxaban during the acute phase of ACS is non-inferior to enoxaparin and designed this prospective, randomized, open-label, active-controlled, multicenter study in participants with ACS (STEMI or NSTEMI or unstable angina). All eligible participants receiving background treatment of aspirin plus clopidogrel or ticagrelor will be randomly assigned to either receive oral rivaroxaban 2.5 mg twice daily or oral rivaroxaban 5 mg twice daily or enoxaparin 1mg/kg twice daily SC until hospital discharge or 12 hours before revascularization therapy for a maximum of 8 days.

Being tested
Rivaroxaban 2.5 mg, Rivaroxaban 5 mg, Enoxaparin
Medical subject headings
Acute Coronary Syndrome, Myocardial Infarction, Myocardial Ischemia, Angina, Unstable

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Rivaroxaban 2.5 mgDrug

    Also called Xarelto

    One 2.5 mg rivaroxaban tablet twice daily until hospital discharge or 12 hours before revascularization therapy for a maximum of 8 days.

  • Rivaroxaban 5 mgDrug

    Also called Xarelto

    One 5 mg rivaroxaban tablet twice daily until hospital discharge or 12 hours before revascularization therapy for a maximum of 8 days.

  • EnoxaparinDrug

    Also called LWMH

    Enoxaparin 1mg/kg twice daily SC until hospital discharge or 12 hours before revascularization therapy for a maximum of 8 days.

Study groups in NCT03363035
Study groupRoleWhat they receive
Rivaroxaban 2.5 mgExperimentalOne 2.5 mg rivaroxaban tablet twice daily
Receives: Drug: Rivaroxaban 2.5 mg
Rivaroxaban 5 mgExperimentalOne 5 mg rivaroxaban tablet twice daily
Receives: Drug: Rivaroxaban 5 mg
enoxaparinActive comparatorEnoxaparin 1mg/kg twice daily SC twice daily
Receives: Drug: Enoxaparin

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Primary Safety Outcome: The percentage of patients with minor, clinically relevant non-major (CRNM) and major bleeding [International Society on Thrombosis and Haemostasis (ISTH) definition of bleeding]

    The percentage of patients with the first occurrence of bleeding event according to ISTH definition. The statistical analysis was based on the occurrence of the bleeding event from randomization to Month 6.

    Measured: From the time of randomization (Day 1) up to completion of the follow up phase (Month 6)

  2. Primary Efficacy Outcome: The percentage of patients with the composite endpoint of cardiac death, myocardial infarction, re-revascularization or stroke.

    The percentage of patients with the first occurrence of the composite of death, myocardial infarction, re-revascularization or stroke. The statistical analysis was based on the time from randomization to the first occurrence of the event up to Month 6.

    Measured: From the time of randomization (Day 1) up to completion of the follow up phase (Month 6).

Secondary outcomes (2)
  1. The percentage of patients with the cardiac-related rehospitalization.

    The percentage of patients with the cardiac-related rehospitalization. The statistical analysis was based on the time from randomization to the first occurrence of the event up to Month 6.

    Measured: From the time of randomization (Day 1) up to completion of the follow up phase (Month 6).

  2. The percentage of patients with the all-cause death.

    The percentage of patients with the all-cause death. The statistical analysis was based on the time from randomization to the first occurrence of the event up to Month 6.

    Measured: From the time of randomization (Day 1) up to completion of the follow up phase (Month 6).

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Dec 2017
  2. Study start15 Jan 2018
  3. Primary completion11 Nov 2021
  4. Study completion30 Nov 2021

Resources

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 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
2,055 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03363035
Sponsor's protocol ID
H-REPLACE-201711
Acronym
H-REPLACE
Status last verified
Feb 2022
First submitted
29 Nov 2017
Last updated
22 Feb 2022
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Zhang Q, Ding H, Dai Z, Yang R, Zhou S, Tai S. U-shaped association between plasma cyclic guanosine monophosphate-adenosine monophosphate (cGAMP) levels and myocardial infarction. BMC Cardiovasc Disord. 2025 Feb 19;25(1):116. doi: 10.1186/s12872-025-04543-9.

    PubMed 39972291
  • Zhou S, Xiao Y, Zhou C, Zheng Z, Jiang W, Shen Q, Zhu C, Pan H, Liu C, Zeng G, Ge L, Zhang Y, Ouyang Z, Fu G, Pan G, Chen F, Huang L, Liu Q; H-REPLACE Investigators. Effect of Rivaroxaban vs Enoxaparin on Major Cardiac Adverse Events and Bleeding Risk in the Acute Phase of Acute Coronary Syndrome: The H-REPLACE Randomized Equivalence and Noninferiority Trial. JAMA Netw Open. 2023 Feb 1;6(2):e2255709. doi: 10.1001/jamanetworkopen.2022.55709.

    PubMed 36763358
  • Xiao Y, Tang L, Liu Q, Hu X, Fang Z, Zhou S. Rationale and Design of the H-REPLACE Study: Safety and Efficacy of LMWH Versus Rivaroxaban in ChinEse Patients HospitaLized with Acute Coronary SyndromE. Cardiovasc Drugs Ther. 2022 Feb;36(1):69-73. doi: 10.1007/s10557-020-07076-9. Epub 2020 Sep 23.

    PubMed 32965585

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Rivaroxaban 2.5 mg, Rivaroxaban 5 mg and Enoxaparin in people with Acute Coronary Syndrome and Myocardial Infarction, run by Second Xiangya Hospital of Central South University at 24 sites in China.

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 3 inclusion and 7 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 22 Feb 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 24 sites in China. 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.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Primary Safety Outcome: The percentage of patients with minor, clinically relevant non-major (CRNM) and major bleeding [International Society on Thrombosis and Haemostasis (ISTH) definition of bleeding] (time frame: From the time of randomization (Day 1) up to completion of the follow up phase (Month 6)). The study lists 2 primary outcomes in all. 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 NCT03363035, which also lists 3 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 22 Feb 2022; AzTrials last refreshed its copy on 8 Nov 2026.

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